NSK

NSK Single-Direction Thrust Ball Bearings With Flat Seat , 51117 ,D=85   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D T T3 T4 r min. Ca C0a Grease Oil 51117 85 110 19 　 　 1 46.5 150 2200 3200 0.44   DESIGN, TYPES, AND FEATURES THRUST BALL BEARINGS Thrust ball bearings are classified into those with flat seats or aligning seats, depending on the shape of the outer ring seat (housing washer). They can sustain axial loads but no radial loads. Available Series of thrust ball bearings available are shown in Table 1. For single-direction thrust ball bearings, pressed-steel cages and machined- brass cages are usually used as shown in Table 2. The cages in double- direction thrust ball bearings are the same as those in single-direction thrust ball bearings of the same Diameter Series. The basic load ratings listed in the bearing tables are based on the standard cage type shown in Table 2. If the type of cage is different for bearings with the same number, the number of balls may vary; in such cases, the load rating will differ from that listed in the bearing tables   THRUST CYLINDRICAL ROLLER BEARINGS These are thrust bearings containing cylindrical rollers. They can sustain only axial loads, but they are suitable for heavy loads and have high axial rigidity. The cages are machined brass. THRUST SPHERICAL ROLLER BEARINGS These are thrust bearings containing convex rollers. They have a self- aligning capability and are free of any influence of mounting error or shaft deflection. Besides the original type, the E type with pressed cages for high load capacity is also available. Their bearing numbers are suffixed by E. For horizontal shaft or high speed application, machined brass cages are recommended. For details, contact NSK. Since there are several places where lubrication is difficult, such as the area between the roller heads and inner ring rib, the sliding surfaces between cage and guide sleeve, etc., oil lubrication should be used even at low speed. The cages in the original type are machined brass. DIMENSIONS RELATED TO MOUNTING The dimensions related to mounting of thrust spherical roller bearings are listed in the Bearing Table. If the bearing load is heavy, it is necessary to design the shaft shoulder with ample strength in order to provide sufficient support for the shaft washer. PERMISSIBLE MISALIGNMENT The permissible misalignment of thrust spherical roller bearings varies depending on the size, but it is approximately 0.018 to 0.036 radian (1° to 2°) with average loads. MINIMUM AXIAL LOAD It is necessary to apply some axial load to thrust bearings to prevent slippage between the rolling elements and raceways.

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NSK Single-Direction Thrust Ball Bearings With Flat Seat , 51116 ,D=80   Bearing Numbers Boundary Dimensions (mm) Basic Load Ratings (kN) Limiting Speeds (min-1) Mass (kg) approx. d D T T3 T4 r min. Ca C0a Grease Oil 51116 80 105 19 　 　 1 45 141 2200 3400 0.417     DESIGN, TYPES, AND FEATURES THRUST BALL BEARINGS Thrust ball bearings are classified into those with flat seats or aligning seats, depending on the shape of the outer ring seat (housing washer). They can sustain axial loads but no radial loads. Available Series of thrust ball bearings available are shown in Table 1. For single-direction thrust ball bearings, pressed-steel cages and machined- brass cages are usually used as shown in Table 2. The cages in double- direction thrust ball bearings are the same as those in single-direction thrust ball bearings of the same Diameter Series. The basic load ratings listed in the bearing tables are based on the standard cage type shown in Table 2. If the type of cage is different for bearings with the same number, the number of balls may vary; in such cases, the load rating will differ from that listed in the bearing tables   THRUST CYLINDRICAL ROLLER BEARINGS These are thrust bearings containing cylindrical rollers. They can sustain only axial loads, but they are suitable for heavy loads and have high axial rigidity. The cages are machined brass. THRUST SPHERICAL ROLLER BEARINGS These are thrust bearings containing convex rollers. They have a self- aligning capability and are free of any influence of mounting error or shaft deflection. Besides the original type, the E type with pressed cages for high load capacity is also available. Their bearing numbers are suffixed by E. For horizontal shaft or high speed application, machined brass cages are recommended. For details, contact NSK. Since there are several places where lubrication is difficult, such as the area between the roller heads and inner ring rib, the sliding surfaces between cage and guide sleeve, etc., oil lubrication should be used even at low speed. The cages in the original type are machined brass. DIMENSIONS RELATED TO MOUNTING The dimensions related to mounting of thrust spherical roller bearings are listed in the Bearing Table. If the bearing load is heavy, it is necessary to design the shaft shoulder with ample strength in order to provide sufficient support for the shaft washer. PERMISSIBLE MISALIGNMENT The permissible misalignment of thrust spherical roller bearings varies depending on the size, but it is approximately 0.018 to 0.036 radian (1° to 2°) with average loads. MINIMUM AXIAL LOAD It is necessary to apply some axial load to thrust bearings to prevent slippage between the rolling elements and raceways.

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NSK Cylindrical Roller Bearings, Single-Row  NU-Type, NU322W ,D=110   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 NU322W 110 240 50 3 3 143 　 450 525 3200 　 2600 3000 11.7     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  NU-Type, NU321W ,D=105   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 NU321W 105 225 49 3 3 133 　 425 480 3400 　 2600 3200 9.78     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  NU-Type, NU320W ,D=100   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 NU320W 100 215 47 3 3 129.5 　 299 335 4000 　 2200 2800 7.7     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  NU-Type, NU319W ,D=95   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 NU319W 95 200 45 3 3 121.5 　 259 289 4300 　 2400 3000 6.24     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  NU-Type, NU318W ,D=90   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 NU318W 90 190 43 3 3 115 　 240 265 4500 　 2600 3000 5.39   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  NU-Type, NU317W ,D=85   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 NU317W 85 180 41 3 3 108 　 212 228 4800 　 2600 3200 4.6   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  NU-Type, NU316W ,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 NU316W 80 170 39 2.1 2.1 101 　 256 282 4300 　 3600 4300 4.41   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  NU-Type, NU315W ,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 NU315W 75 160 37 2.1 2.1 95.5 　 179 189 5000 　 3000 3800 3.27     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  NU-Type, NU314W ,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 NU314W 70 150 35 2.1 2.1 90 　 158 168 5300 　 3200 4000 2.76     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  NU-Type, NU313W ,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 NU313W 65 140 33 2.1 2.1 83.5 　 135 139 5600 　 3600 4300 2.23   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  NU-Type, NU312W ,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 NU312W 60 130 31 2.1 2.1 77 　 124 126 6000 　 3800 4500 1.82     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  NU-Type, NU311W ,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 NU311W 55 120 29 2 2 70.5 　 137 143 6000 　 4500 5600 1.463     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  NU-Type, NU310W ,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 NU310W 50 110 27 2 2 65 　 110 113 6700 　 5000 6000 1.149   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  NU-Type, NU309W ,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 NU309W 45 100 25 1.5 1.5 58.5 　 97.5 98.5 7100 　 6000 7500 0.895     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  NU-Type, NU308W ,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 NU308W 40 90 23 1.5 1.5 52 　 83 81.5 7500 　 6700 8000 0.662     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  NU-Type, NU307W ,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 NU307W 35 80 21 1.5 1.1 46.2 　 66.5 65.5 8500 　 7500 9500 0.49   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  NU-Type, NU306W ,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 NU306W 30 72 19 1.1 1.1 40.5 　 53 50 9500 　 8500 10000 0.366     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  NU-Type, NU305W ,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 NU305W 25 62 17 1.1 1.1 34 　 41.5 37.5 11000 　 10000 12000 0.241     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  NU-Type, NU304W ,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 NU304W 20 52 15 1.1 0.6 27.5 　 31.5 26.9 13000 　 12000 15000 0.147   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  NU-Type, NU2340M ,D=200   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 NU2340M 200 420 138 5 5 253 　 1910 2760 1300 　 1200 1500 98   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  NU-Type, NU2338M ,D=190   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 NU2338M 190 400 132 5 5 240 　 1770 2520 1400 　 1300 1600 85     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  NU-Type, NU2336M ,D=180   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 NU2336M 180 380 126 4 4 227 　 1560 2220 1500 　 1300 1700 73.7     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  NU-Type, NU2334M ,D=170   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 NU2334M 170 360 120 4 4 216 　 1490 2070 1600 　 1400 1800 62.6   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  NU-Type, NU2332M ,D=160   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 NU2332M 160 340 114 4 4 204 　 1310 1820 1800 　 1500 1900 53.2     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  NU-Type, NU2330M ,D=150   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 NU2330M 150 320 108 4 4 193 　 1160 1600 2000 　 1600 2000 44.6     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  NU-Type, NU2328M ,D=140   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 NU2328M 140 300 102 4 4 180 　 1020 1380 2200 　 1700 2200 37.2   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  NU-Type, NU2326M ,D=130   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 NU2326M 130 280 93 4 4 167 　 920 1230 2400 　 1900 2400 29.6     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  NU-Type, NU2324M ,D=120   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 NU2324M 120 260 86 3 3 154 　 795 1030 2600 　 2000 2600 23.5     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  NU-Type, NU2320W ,D=100   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 NU2320W 100 215 73 3 3 127.5 　 570 715 3400 　 2400 3000 13.4     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  NU-Type, NU2319W ,D=95   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 NU2319W 95 200 67 3 3 121.5 　 460 585 3800 　 2600 3400 10.6     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  NU-Type, NU2318W ,D=90   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 NU2318W 90 190 64 3 3 113.5 　 435 535 4000 　 2800 3400 9.08   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  NU-Type, NU2317W ,D=85   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 NU2317W 85 180 60 3 3 108 　 395 485 4300 　 3000 3800 8.35 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  NU-Type, NU2316W ,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 NU2316W 80 170 58 2.1 2.1 101 　 355 430 4500 　 3200 4000 6.57 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  NU-Type, NU2315W ,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 NU2315W 75 160 55 2.1 2.1 95 　 330 395 4800 　 3400 4300 5.57 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  NU-Type, NU2314W ,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 NU2314W 70 150 51 2.1 2.1 89 　 274 325 5000 　 3600 4500 4.51 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  NU-Type, NU2313W ,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 NU2313W 65 140 48 2.1 2.1 82.5 　 233 265 5600 　 3800 4800 3.68 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  NU-Type, NU2312W ,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 NU2312W 60 130 46 2.1 2.1 77 　 222 262 5600 　 4300 5300 3.08 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  NU-Type, NU2311W ,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 NU2311W 55 120 43 2 2 70.5 　 201 233 6000 　 4500 5600 2.48 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  NU-Type, NU2310W ,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 NU2310W 50 110 40 2 2 65 　 163 187 6700 　 5000 6300 1.94 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  NU-Type, NU2309W ,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 NU2309W 45 100 36 1.5 1.5 58.5 　 137 153 7100 　 5300 6700 1.46 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  NU-Type, NU2308W ,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 NU2308W 40 90 33 1.5 1.5 52 　 114 122 8000 　 6000 7500 1.08 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  NU-Type, NU256M ,D=280   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 NU256M 280 500 80 5 5 340 　 1140 1680 1300 　 1100 1400 70.7 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  NU-Type, NU252M ,D=260   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 NU252M 260 480 80 5 5 320 　 1100 1580 1500 　 1200 1500 67.1 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  NU-Type, NU248M ,D=240   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 NU248M 240 440 72 4 4 295 　 935 1340 1600 0 1300 1600 50.4 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  NU-Type, NU240M ,D=200   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 NU240M 200 360 58 4 4 243 　 765 1060 1900 3200 1700 2000 26.9 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  NU-Type, NU238M ,D=190   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 NU238M 190 340 55 4 4 230 　 695 955 2000 3400 1800 2200 22.5 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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