BEARING / FA

NSK Angular Contact Ball Bearings ,Double-Row 5303 ,D=17   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5303 17 47 22.2 1 21 12.6 10000 13000 0.14   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5213 ,D=65   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5213 65 120 38.1 1.5 76.5 69 3600 4500 1.65     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5212 ,D=60   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5212 60 110 36.5 1.5 69 62 3800 5000 1.35     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5211 ,D=55   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5211 55 100 33.3 1.5 56 49 4300 5600 0.96   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5210 ,D=50   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5210 50 90 30.2 1.1 53 43.5 4800 6000 0.67     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5209 ,D=45   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5209 45 85 30.2 1.1 49.5 38 5000 6700 0.62   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5208 ,D=40   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5208 40 80 30.2 1.1 44 33.5 5600 7100 0.57     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5207 ,D=35   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5207 35 72 27 1.1 39 28.7 6300 8000 0.43     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5206 ,D=30   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5206 30 62 23.8 1 29.6 21.1 7100 9500 0.29 DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5205 ,D=25   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5205 25 52 20.6 1 21.3 14.7 8500 11000 0.19   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5204 ,D=20   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5204 20 47 20.6 1 19.6 12.4 10000 13000 0.12     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5203 ,D=17   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5203 17 40 17.5 0.6 14.6 9.05 11000 15000 0.09   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5202 ,D=15   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5202 15 35 15.9 0.6 11.7 7.05 13000 17000 0.07     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5201 ,D=12   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5201 12 32 15.9 0.6 10.5 5.8 15000 20000 0.06      DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5200 ,D=10    Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5200 10 30 14.3 0.6 7.15 3.9 17000 22000 14.8     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5311 ,D=55   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5311 55 120 49.2 2 95 73 3800 5000 2.3     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5310 ,D=50   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5310 50 110 44.4 2 81.5 61.5 4300 5600 1.95     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5309 ,D=45   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5309 45 100 39.7 1.5 68.5 51 4500 6000 1.4     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5308 ,D=40   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5308 40 90 36.5 1.5 56.5 41 5300 6700 1.05     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,Double-Row 5307 ,D=35   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. Cr C0r Grease Oil 5307 35 80 34.9 1.5 51 36 5600 7500 0.79     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     □Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ①Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ②Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ③Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ④Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ⑤Internal design EA : High Load Capacity ⑥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ⑦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ⑧Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   □Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ①Bearing type 5 : Double-row angular contact ball bearings ②Dimension Series 2 : 02 Series   3: 03 Series ③Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ④Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ⑤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ⑥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7009CTYP5 ,D=45   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7009CTYP5 45 75 16 1 0.6 24.4 19.3 14000 19000 15.4 0.274     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7008CTYP5 ,D=40   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7008CTYP5 40 68 15 1 0.6 20.6 15.9 15000 20000 15.4 0.213   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7007CTYP5 ,D=35   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7007CTYP5 35 62 14 1 0.6 19.1 13.7 17000 22000 15 0.153     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7006CTYP5 ,D=30   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7006CTYP5 30 55 13 1 0.6 15.1 10.3 19000 26000 14.9 0.115     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7005CTYP5 ,D=25   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7005CTYP5 25 47 12 0.6 0.3 11.7 7.4 22000 30000 14.7 0.078   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7004CTYP5 ,D=20   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7004CTYP5 20 42 12 0.6 0.3 11.1 6.55 26000 36000 14 0.068     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7003CTYP5 ,D=17   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7003CTYP5 17 35 10 0.3 0.15 6.6 3.8 32000 43000 14.5 0.04     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7002CTYP5 ,D=15   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7002CTYP5 15 32 9 0.3 0.15 6.25 3.4 34000 48000 14.1 0.03   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7001CTYP5 ,D=12   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7001CTYP5 12 28 8 0.3 0.15 5.8 2.9 40000 56000 13.2 0.021     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7000CTYP5 ,D=10   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7000CTYP5 10 26 8 0.3 0.15 5.3 2.49 45000 63000 12.6 0.019   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7336A ,D=180   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7336A 180 380 75 4 1.5 410 535 1500 2000 ?€ 42.1     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7334A ,D=170   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7334A 170 360 72 4 1.5 390 485 1600 2200 ?€ 35.8     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7332A ,D=160   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7332A 160 340 68 4 1.5 345 420 1700 2200 ?€ 30.7   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7330A ,D=150   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7330A 150 320 65 4 1.5 315 370 1800 2400 ?€ 26     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7328A ,D=140   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7328A 140 300 62 4 1.5 300 335 2000 2600 ?€ 21.4     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7326A ,D=130   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7326A 130 280 58 4 1.5 273 293 2200 2800 ?€ 17.5   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7324A ,D=120   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7324A 120 260 55 3 1.1 246 252 2200 3000 ?€ 14.5     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7322A ,D=110   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7322A 110 240 50 3 1.1 220 215 2600 3400 ?€ 11.1     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7321A ,D=105   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7321A 105 225 49 3 1.1 208 193 2600 3600 ?€ 9.34     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7320AW ,D=100   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7320AW 100 215 47 3 1.1 207 193 2200 3000 ?€ 7.29   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7319AW ,D=95   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7319AW 95 200 45 3 1.1 183 162 2400 3200 ?€ 5.83     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7318AW ,D=90   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7318AW 90 190 43 3 1.1 171 147 2600 3400 ?€ 5.06   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7317AW ,D=85   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7317AW 85 180 41 3 1.1 159 133 2600 3600 ?€ 4.33     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7316AW ,D=80   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7316AW 80 170 39 2.1 1.1 147 119 2800 3800 ?€ 3.71     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7315AW ,D=75   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7315AW 75 160 37 2.1 1.1 136 106 3000 4000 ?€ 3.13   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7314AW ,D=70   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7314AW 70 150 35 2.1 1.1 125 93.5 3200 4300 ?€ 2.6     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7313AW ,D=65   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7313AW 65 140 33 2.1 1.1 111 82 3600 4800 ?€ 2.12     DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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NSK Angular Contact Ball Bearings ,A :Contact Angle of 30°, 7312AW ,D=60   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Factor f0 Mass (kg) approx. d D B r min. r1 min. Cr C0r Grease Oil 7312AW 60 130 31 2.1 1.1 98 71.5 3800 5000 ?€ 1.74   DESIGN, TYPES, AND FEATURES SINGLE-ROW ANGULAR CONTACT BALL BEARINGS Single-row angular contact ball bearings have a contact angle allowing them to sustain significant axial loads in one direction together with radial loads. Because of their design, when a radial load is applied, an axial force component is produced; therefore, two or more opposed bearings must be used. Since the rigidity of single-row angular contact ball bearings can be increased by preloading, they are often used in the main spindles of machine tools where high running accuracy is required (refer to Chapter 9 Preload on Page A192 for more information). Usually, the cages for angular contact ball bearings with a contact angle of 30° (designation A) or 40°(designation B) are made in accordance with Table 1, but depending on the application, machined synthetic-resin cages or molded polyamide-resin cages may also be used. The basic load ratings given in the bearing tables are based on standard cages. Though the figures in the bearing tables on Pages C086 to C101 for bearing bore diameters of 10 to 120 show bearings with single-shoulder inner rings, dual-shoulder bearings are also available. Please consult NSK for more detailed information.   MATCHED ANGULAR CONTACT BALL BEARINGS The types and features of matched angular contact ball bearings are shown in Table 2.   Table 2  Types and Features of Matched Angular Contact Ball Bearings Figure  Arrangement  Features Back-to-Back(DB)(Example)7208 A DB    Radial loads and axial loads in both directions can be sustained.    Since the distance between the effective load centers a0 is large, this type is suitable if moments are applied. Face-to-Face(DF)(Example)7208 B DF    Radial loads and axial loads in both directions can be sustained.    Compared with the DB Type, the distance between the effective load centers is small, so the capacity to sustain moments is inferior. Tandem(DT)(Example)7208 A DT    Radial loads and axial loads in one direction can be sustained.    Since two bearings share the axial load, this arrangement is used when the load in one direction is heavy.     ?¡Formulation of Bearing Designations Single-Row Matched Angular Contact Ball Bearings ? Bearing type 7 : Single-row angular contact ball bearings, matched angular contact ball bearings ?¡Dimension Series 2 : 02 Series, 3 : 03 Series, 9 : 19 Series, 0 : 10 Series ?¢Bore number  Less than 03, Bearing bore 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mmOver 04, Bearing bore Bore number ×5 (mm)  ?£Contact angle C : 15°, A5 : 25°, A : 30°, B : 40° ?¤Internal design EA : High Load Capacity ?¥Cage W : Pressed steel Cage, T85 : Machined brass cage (ball-guided),No designation : Machined brass cage (inner ring guided), TYN : Polyamide resin cage,T85 : Polyamide 46 resin cage, T7 : L-PPS resin cage ?¦Arrangement SU: Universal arrangement (single-row), DU : Universal arrangement (double-row),DB : Back-to-back arrangement, DF : Face-to-face arrangement, DT : Tandem arrangement ?§Preload / Axial    internal clearance EL : Extra light preload, L : Light preload, M : Medium preload, H : Heavy preloadOmitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3,CNB : CN Clearance equivalent (universal arrangement)    DOUBLE-ROW ANGULAR CONTACT BALL BEARINGS Double-row angular contact ball bearings are essentially a back- to-back mounting of two single-row angular contact ball bearings, but their inner and outer rings are each integrated into one. These bearings can sustain axial loads in both directions and offer good capacity for sustaining moment loads. They are often used as fixed- end bearings and contain cages made of pressed steel.   ?¡Formulation of Bearing Designations Double-Row Angular Contact Ball Bearings   ? Bearing type 5 : Double-row angular contact ball bearings ?¡Dimension Series 2 : 02 Series   3: 03 Series ?¢Bore number  03 and under: 00 : 10mm, 01 : 12mm, 02 : 15mm, 03 : 17mm 04 and over: Bore diameter bore number ×5 (mm) ?£Internal design  ZZ: Steel shield on both sides, DDU: Rubber contact seal on both sides VV: Rubber noncontact seal on both sides ?¤Seals/shields  Z: Steel shield on one sides, DU: Rubber contact seal on one side, V: Rubber non-contact seal on one side ?¥Grease* NS7: NS HI-LUBE

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