 NTN NA497 needle roller bearings
  NTN NA497 needle roller bearings
                                
NTN NA497 needle roller bearings manufacturer and global supplier of reliable ball and 140x100x20 Size (mm) roller … NTN NA497 needle roller bearings Industries Products Manufacturing & Engineering 100 Outer Diameter (mm) and Agricultural Bearings designed 140 Bore Diameter (mm) to meet the unique requirements of our targeted industries.
| Size (mm) | 140x100x20 | 
| Bore Diameter (mm) | 140 | 
| Outer Diameter (mm) | 100 | 
| Width (mm) | 20 | 
| d | 100 mm | 
| D | 140 mm | 
| B | 20 mm | 
| d1 | 112.3 mm | 
| d2 | 112.3 mm | 
| D1 | 127.7 mm | 
| b | 2.3 mm | 
| C1 | 10.9 mm | 
| C2 | 4 mm | 
| C3 | 3.3 mm | 
| r1,2 – min. | 1.1 mm | 
| r3,4 – min. | 0.6 mm | 
| a | 38.1 mm | 
| da – min. | 106 mm | 
| db – min. | 106 mm | 
| Da – max. | 134 mm | 
| Db – max. | 136 mm | 
| ra – max. | 1 mm | 
| rb – max. | 0.6 mm | 
| dn | 115.6 mm | 
| Basic dynamic load rating – C | 57.2 kN | 
| Basic static load rating – C0 | 63 kN | 
| Fatigue load limit – Pu | 2.4 kN | 
| Limiting speed for grease lubrication | 9000 r/min | 
| Limiting speed for oil lubrication | 15000 mm/min | 
| Ball – Dw | 12.7 mm | 
| Ball – z | 26 | 
| Gref | 10.5 cm3 | 
| Calculation factor – e | 0.68 | 
| Calculation factor – Y2 | 1.41 | 
| Calculation factor – Y0 | 0.76 | 
| Calculation factor – X2 | 0.67 | 
| Calculation factor – Y1 | 0.92 | 
| Preload class A – GA | 360 N | 
| Preload class B – GB | 720 N | 
| Preload class C – GC | 1440 N | 
| Preload class D – GD | 2880 N | 
| Calculation factor – f | 1.23 | 
| Calculation factor – f1 | 0.98 | 
| Calculation factor – f2A | 1 | 
| Calculation factor – f2B | 1.07 | 
| Calculation factor – f2C | 1.12 | 
| Calculation factor – f2D | 1.17 | 
| Calculation factor – fHC | 1.04 | 
| Preload class A | 283 N/micron | 
| Preload class B | 373 N/micron | 
| Preload class C | 498 N/micron | 
| Preload class D | 680 N/micron | 
| r1,2 min. | 1.1 mm | 
| r3,4 min. | 0.6 mm | 
| da min. | 106 mm | 
| db min. | 106 mm | 
| Da max. | 134 mm | 
| Db max. | 136 mm | 
| ra max. | 1 mm | 
| rb max. | 0.6 mm | 
| Basic dynamic load rating C | 57.2 kN | 
| Basic static load rating C0 | 63 kN | 
| Fatigue load limit Pu | 2.4 kN | 
| Attainable speed for grease lubrication | 9000 r/min | 
| Attainable speed for oil-air lubrication | 15000 r/min | 
| Ball diameter Dw | 12.7 mm | 
| Number of balls z | 26 | 
| Reference grease quantity Gref | 10.5 cm³ | 
| Preload class A GA | 360 N | 
| Static axial stiffness, preload class A | 283 N/µm | 
| Preload class B GB | 720 N | 
| Static axial stiffness, preload class B | 373 N/µm | 
| Preload class C GC | 1440 N | 
| Static axial stiffness, preload class C | 498 N/µm | 
| Preload class D GD | 2880 N | 
| Static axial stiffness, preload class D | 680 N/µm | 
| Calculation factor f | 1.23 | 
| Calculation factor f1 | 0.98 | 
| Calculation factor f2A | 1 | 
| Calculation factor f2B | 1.07 | 
| Calculation factor f2C | 1.12 | 
| Calculation factor f2D | 1.17 | 
| Calculation factor fHC | 1.04 | 
| Calculation factor e | 0.68 | 
| Calculation factor (single, tandem) Y2 | 0.87 | 
| Calculation factor (single, tandem) Y0 | 0.38 | 
| Calculation factor (single, tandem) X2 | 0.41 | 
| Calculation factor (back-to-back, face-to-face) Y1 | 0.92 | 
| Calculation factor (back-to-back, face-to-face) Y2 | 1.41 | 
| Calculation factor (back-to-back, face-to-face) Y0 | 0.76 | 
| Calculation factor (back-to-back, face-to-face) X2 | 0.67 | 
| Mass bearing | 0.67 kg | 
 Detailed  Parameters
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