NSK

NSK Cylindrical Roller Bearings, Single-Row N-Type, N216W ,D=80   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N216W 80 140 26 2 2 　 125.3 106 122 5600 　 3600 4300 1.47   DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N215W ,D=75   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N215W 75 130 25 1.5 1.5 　 116.5 96.5 111 6000 　 3800 4800 1.23     DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N214W ,D=70   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N214W 70 125 24 1.5 1.5 　 110.5 83.5 95 6300 　 4000 5000 1.14     DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N213W ,D=65   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N213W 65 120 23 1.5 1.5 　 105.6 84 94.5 6300 　 4300 5300 1.05   DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N212W ,D=60   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N212W 60 110 22 1.5 1.5 　 97.5 68.5 75 7100 　 4800 5600 0.823     DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N211W ,D=55   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N211W 55 100 21 1.5 1.1 　 88.5 58 62.5 7500 　 5300 6300 0.634   DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N210W ,D=50   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N210W 50 90 20 1.1 1.1 　 80.4 48 51 8500 　 5600 6700 0.483     DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N209W ,D=45   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N209W 45 85 19 1.1 1.1 　 75 46 47 9000 　 6300 7500 0.429     DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N208W ,D=40   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N208W 40 80 18 1.1 1.1 　 70 43.5 43 9500 　 6700 8000 0.375     DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N207W ,D=35   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N207W 35 72 17 1.1 0.6 　 61.8 35.5 34 11000 　 7500 9000 0.301     DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N206W ,D=30   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N206W 30 62 16 1 0.6 　 53.5 24.9 23.3 13000 　 8500 10000 0.208   DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N205W ,D=25   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N205W 25 52 15 1 0.6 　 45 17.7 15.7 16000 　 10000 12000 0.135     DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Cylindrical Roller Bearings, Single-Row N-Type, N204W ,D=20   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D B r min. r1 min. Fw Ew Cr C0r Thermal Reference Mechanical Grease Oil N204W 20 47 14 1 0.6 　 40 15.4 12.7 18000 　 12000 14000 0.107     DESIGN, TYPES, AND FEATURES Cylindrical roller bearings are classified into the following types depending on whether or not they have ribs on their rings:     Types NU, N, NNU, and NN are suitable as free-end bearings. Types NJ and NF can sustain limited axial loads in one direction. Types NH and NUP can be used as fixed-end bearings. The NH type consists of NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars The inner ring loose rib of the NUP type should be mounted so that the marked side is on the outside.     If a cage is nonstandard for a given bearing number the number of rollers may vary; in such a case, the load rating will differ from that listed in the bearing tables. Many NN double-row bearings have tapered bores, and they are primarily used in the main spindles of machine tools. Cages are made of either molded polyphenylenesulfide (PPS) or machined brass.     □Formulation of Bearing Designations Single-Row Cylindrical Roller Bearing     ①Bearing type NU : Single-row cylindrical roller bearings(Outer ring with both ribs + Inner ring without rib) Please refer to page C124 for detailed information. ②Dimension Series  10 : 10 Series, 2: 02 Series, 22 : 22 Series, 3 : 03 Series, 23 : 23 Series, 4 : 04 Series, ③Bore number   Less than 03, Bearing bore 01 : 12mm, 02 : 15mm, 03 : 17mm Over 04, Bearing bore Bore number X 5 (mm) ④Internal design E : High load capacity ⑤Cage  W : Pressed-steel Cage, M : Machined Brass Cage, No designation : Machined-brass cage (in Series 10) T : Polyamide 66 resin cage, T7 : L-PPS resin cage ⑥Internal clearance  For All Radial Brgs.Omitted : CN clearance, C3 : Clearance greater than CN, C4 : Clearance greater than C3, CG : Special ClearanceFor Non-Interchangeable Cylindrical Roller BearingsCC : Normal Clearance, CC3 : Clearance greater than CC, CC4 : Clearance greater than CC3, CCG : Special Clearance ⑦Tolerance class  Omitted : ISO Normal，P6 : ISO Class 6，P5 : ISO Class 5，P4 : ISO Class 4 ⑧NSKHPSTM  & : NSKHPSTM Designation Tolerance Class : ISO Normal

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NSK Angular Contact Ball Bearings ,C: Contact Angle of 15°, 7220CTYP5 ,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 7220CTYP5 100 180 34 2.1 1.1 149 127 5600 8000 14.5 3.65   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 ,C: Contact Angle of 15°, 7219CTYP5 ,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 7219CTYP5 95 170 32 2.1 1.1 133 112 6000 8500 14.6 3.05     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 ,C: Contact Angle of 15°, 7218CTYP5 ,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 7218CTYP5 90 160 30 2 1 123 105 6300 9000 14.6 2.51     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°, 7217CTYP5 ,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 7217CTYP5 85 150 28 2 1 107 90.5 6700 9500 14.7 2.04     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 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°, 7216CTYP5 ,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 7216CTYP5 80 140 26 2 1 93 77.5 7500 10000 14.7 1.63   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°, 7215CTYP5 ,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 7215CTYP5 75 130 25 1.5 1 83 70 8000 11000 14.8 1.36     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°, 7214CTYP5 ,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 7214CTYP5 70 125 24 1.5 1 79.5 64.5 8500 11000 14.6 1.24     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°, 7213CTYP5 ,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 7213CTYP5 65 120 23 1.5 1 73 58.5 9000 12000 14.6 1.14   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 ,C: Contact Angle of 15°, 7212CTYP5 ,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 7212CTYP5 60 110 22 1.5 1 64 49 9500 13000 14.4 0.889     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°, 7211CTYP5 ,D=55   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 7211CTYP5 55 100 21 1.5 1 53 40 10000 14000 14.5 0.688     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°, 7210CTYP5 ,D=50   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 7210CTYP5 50 90 20 1.1 0.6 43 31.5 12000 16000 14.5 0.528   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°, 7209CTYP5 ,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 7209CTYP5 45 85 19 1.1 0.6 41 28.8 12000 17000 14.2 0.468     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°, 7208CTYP5 ,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 7208CTYP5 40 80 18 1.1 0.6 36.5 25.2 14000 19000 14.1 0.418     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°, 7207CTYP5 ,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 7207CTYP5 35 72 17 1.1 0.6 30.5 19.9 15000 20000 13.9 0.32     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°, 7206CTYP5 ,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 7206CTYP5 30 62 16 1 0.6 23 14.7 18000 24000 13.9 0.197     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°, 7205CTYP5 ,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 7205CTYP5 25 52 15 1 0.6 16.6 10.2 22000 28000 14 0.129   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°, 7204CTYP5 ,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 7204CTYP5 20 47 14 1 0.6 14.6 8.05 24000 34000 13.3 0.104     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°, 7203CTYP5 ,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 7203CTYP5 17 40 12 0.6 0.3 10.9 5.85 28000 38000 13.3 0.065     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°, 7202CTYP5 ,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 7202CTYP5 15 35 11 0.6 0.3 8.65 4.55 32000 45000 13.2 0.045    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°, 7201CTYP5 ,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 7201CTYP5 12 32 10 0.6 0.3 7.9 3.85 36000 50000 12.5 0.036     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°, 7200CTYP5 ,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 7200CTYP5 10 30 9 0.6 0.3 5.4 2.61 40000 56000 13.2 0.032   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°, 7020CTYP5 ,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 7020CTYP5 100 150 24 1.5 1 75.5 77 6300 9000 16 1.46     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°, 7019CTYP5 ,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 7019CTYP5 95 145 24 1.5 1 73.5 73 6700 9000 15.9 1.42     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°, 7018CTYP5 ,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 7018CTYP5 90 140 24 1.5 1 71.5 69 7100 9500 15.7 1.34   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 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°, 7017CTYP5 ,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 7017CTYP5 85 130 22 1.1 0.6 60 58.5 7500 10000 15.9 1.01     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°, 7016CTYP5 ,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 7016CTYP5 80 125 22 1.1 0.6 58.5 55.5 8000 11000 15.7 0.966     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°, 7015CTYP5 ,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 7015CTYP5 75 115 20 1.1 0.6 48 45.5 8500 12000 15.9 0.748   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°, 7014CTYP5 ,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 7014CTYP5 70 110 20 1.1 0.6 47 43 9000 12000 15.7 0.698     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°, 7013CTYP5 ,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 7013CTYP5 65 100 18 1.1 0.6 37 34.5 10000 13000 15.9 0.493     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°, 7012CTYP5 ,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 7012CTYP5 60 95 18 1.1 0.6 35 30.5 10000 14000 15.7 0.46     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°, 7011CTYP5 ,D=55   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 7011CTYP5 55 90 18 1.1 0.6 34 28.6 11000 15000 15.5 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 ,C: Contact Angle of 15°, 7010CTYP5 ,D=50     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 7010CTYP5 50 80 16 1 0.6 26 21.9 12000 17000 15.7 0.293     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 5306 ,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 5306 30 72 30.2 1.1 40.5 28.1 6300 8500 0.51     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 5305 ,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 5305 25 62 25.4 1.1 32.5 20.7 7500 10000 0.34     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 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 5304 ,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 5304 20 52 22.2 1.1 24.6 15 9000 12000 0.23     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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