NSK

NSK Single-Direction Thrust Ball Bearings With Flat Seat , 51204 ,D=20   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 51204 20 40 14 　 　 0.6 22.5 37.5 4300 6300 0.077     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 , 51203 ,D=17   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 51203 17 35 12 　 　 0.6 17.3 27.3 4800 7500 0.05     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 , 51202 ,D=15   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 51202 15 32 12 　 　 0.6 16.7 24.8 5000 7500 0.043   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 , 51201 ,D=12   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 51201 12 28 11 　 　 0.6 13.3 19 5600 8500 0.031     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 , 51200 ,D=10   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 51200 10 26 11 　 　 0.6 12.8 17.1 6000 9000 0.028     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 , 51152X ,D=260   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 51152X 260 320 45 　 　 1.5 233 990 800 1200 7.01   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 , 51148X ,D=240   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 51148X 240 300 45 　 　 1.5 229 935 850 1200 6.55     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 , 51144X ,D=220   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 51144X 220 270 37 　 　 1.1 179 740 950 1500 4.09     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 , 51140X ,D=200   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 51140X 200 250 37 　 　 1.1 173 675 1000 1500 3.75   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 , 51138X ,D=190   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 51138X 190 240 37 　 　 1.1 172 655 1000 1600 3.6     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 , 51136X ,D=180   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 51136X 180 225 34 　 　 1.1 136 530 1100 1700 2.79     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 , 51134X ,D=170   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 51134X 170 215 34 　 　 1.1 135 510 1100 1700 2.72   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 , 51132X ,D=160   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 51132X 160 200 31 　 　 1 113 425 1200 1900 2.07     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 , 51130X ,D=150   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 51130X 150 190 31 　 　 1 110 400 1300 1900 1.95     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 , 51128X ,D=140   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 51128X 140 180 31 　 　 1 107 375 1300 2000 1.83   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 , 51126 ,D=130   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 51126 130 170 30 　 　 1 105 350 1400 2000 1.68     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, NU424M ,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 NU424M 120 310 72 5 5 170 　 675 770 2400 　 2000 2400 30.2     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, NU422M ,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 NU422M 110 280 65 4 4 155 　 550 620 2600 　 2200 2800 22.1   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, NU421M ,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 NU421M 105 260 60 4 4 144.5 　 495 555 2800 　 2400 3000 17.3     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, NU420M ,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 NU420M 100 250 58 4 4 139 　 450 500 3000 　 2600 3000 15.5     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, NU419M ,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 NU419M 95 240 55 4 4 133.5 　 400 445 3200 　 2600 3200 13.6   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, NU418M ,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 NU418M 90 225 54 4 4 123.5 　 375 400 3600 　 2800 3400 11.5     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, NU417M ,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 NU417M 85 210 52 4 4 113 　 335 350 4000 　 3000 3800 9.55     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, NU416W ,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 NU416W 80 200 48 3 3 110 　 299 315 4000 　 2600 3000 7.38   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, NU415W ,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 NU415W 75 190 45 3 3 104.5 　 262 274 4300 　 2600 3200 6.28     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, NU414W ,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 NU414W 70 180 42 3 3 100 　 228 236 4500 　 2800 3400 5.29     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, NU413W ,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 NU413W 65 160 37 2.1 2.1 89.3 　 182 186 4800 　 3200 4000 3.63   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, NU412W ,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 NU412W 60 150 35 2.1 2.1 83 　 167 168 5000 　 3400 4300 3.04     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, NU411W ,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 NU411W 55 140 33 2.1 2.1 77.2 　 139 138 5300 　 3800 4500 2.5     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, NU410W ,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 NU410W 50 130 31 2.1 2.1 70.8 　 129 124 5600 　 4000 4800 1.99     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, NU409W ,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 NU409W 45 120 29 2 2 64.5 　 107 102 6300 　 4300 5300 1.62     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, NU408W ,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 NU408W 40 110 27 2 2 58 　 95.5 89 6700 　 4800 6000 1.28   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, NU407W ,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 NU407W 35 100 25 1.5 1.5 53 　 75.5 69 7500 　 5300 6300 1.01     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, NU406W ,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 NU406W 30 90 23 1.5 1.5 45 　 62.5 55 8500 　 6000 7500 0.758     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, NU405W ,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 NU405W 25 80 21 1.5 1.5 38.8 　 46.5 40 9500 　 7100 8500 0.57   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, NU340M ,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 NU340M 200 420 80 5 5 258 　 1140 1450 1500 　 1300 1600 56.1     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, NU338M ,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 NU338M 190 400 78 5 5 245 　 1060 1340 1600 　 1400 1700 49.6     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, NU336M ,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 NU336M 180 380 75 4 4 231 　 985 1230 1700 　 1500 1800 43.3   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, NU334M ,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 NU334M 170 360 72 4 4 218 　 930 1150 1800 　 1600 2000 37.3     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, NU332M ,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 NU332M 160 340 68 4 4 204 　 860 1050 1900 　 1700 2000 31.5     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, NU330W ,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 NU330W 150 320 65 4 4 193 　 760 920 2200 　 1800 2200 26.6   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, NU328W ,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 NU328W 140 300 62 4 4 180 　 665 795 2400 　 2000 2400 22.4     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, NU326W ,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 NU326W 130 280 58 4 4 167 　 615 735 2600 　 2200 2600 18.3     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, NU324W ,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 NU324W 120 260 55 3 3 154 　 530 610 2800 　 2200 2800 14.9   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 Single-Direction Thrust Ball Bearings With Flat Seat , 51124 ,D=120   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 51124 120 155 25 　 　 1 90 310 1600 2400 1.12     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 , 51122 ,D=110   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 51122 110 145 25 　 　 1 88 288 1700 2400 1.04   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 , 51120 ,D=100   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 51120 100 135 25 　 　 1 86 268 1700 2600 0.96     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 , 51118 ,D=90   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 51118 90 120 22 　 　 1 60 190 1900 3000 0.646     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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