NBS NK 26/20 needle roller bearings
NBS NK 26/20 needle roller bearings Industries and Applications ? We sell discount online as well 55 Outer Diameter (mm) as cheap 80x55x13 Size (mm) machinery parts. 80 Bore Diameter (mm)
| Size (mm) | 80x55x13 |
| Bore Diameter (mm) | 80 |
| Outer Diameter (mm) | 55 |
| Width (mm) | 13 |
| d | 55 mm |
| D | 80 mm |
| B | 13 mm |
| d1 | 62.75 mm |
| d2 | 60.7 mm |
| D1 | 72.3 mm |
| b | 2.2 mm |
| C1 | 6.5 mm |
| C2 | 2.5 mm |
| C3 | 2 mm |
| r1,2 – min. | 1 mm |
| r3,4 – min. | 0.3 mm |
| a | 16.2 mm |
| da – min. | 59.6 mm |
| db – min. | 57 mm |
| Da – max. | 75.4 mm |
| Db – max. | 78 mm |
| ra – max. | 1 mm |
| rb – max. | 0.3 mm |
| dn | 64.6 mm |
| Basic dynamic load rating – C | 15.3 kN |
| Basic static load rating – C0 | 10.6 kN |
| Fatigue load limit – Pu | 0.455 kN |
| Limiting speed for grease lubrication | 28000 r/min |
| Limiting speed for oil lubrication | 43000 mm/min |
| Ball – Dw | 7.938 mm |
| Ball – z | 21 |
| Gref | 2.3 cm3 |
| Calculation factor – f0 | 8.4 |
| Preload class A – GA | 83 N |
| Preload class B – GB | 250 N |
| Preload class C – GC | 500 N |
| Calculation factor – f | 1 |
| Calculation factor – f2A | 1 |
| Calculation factor – f2B | 1.05 |
| Calculation factor – f2C | 1.09 |
| Calculation factor – fHC | 1.01 |
| Preload class A | 46 N/micron |
| Preload class B | 74 N/micron |
| Preload class C | 102 N/micron |
| r1,2 min. | 1 mm |
| r3,4 min. | 0.3 mm |
| da min. | 59.6 mm |
| db min. | 57 mm |
| Da max. | 75.4 mm |
| Db max. | 78 mm |
| ra max. | 1 mm |
| rb max. | 0.3 mm |
| Basic dynamic load rating C | 15.3 kN |
| Basic static load rating C0 | 10.6 kN |
| Fatigue load limit Pu | 0.455 kN |
| Attainable speed for grease lubrication | 28000 r/min |
| Attainable speed for oil-air lubrication | 43000 r/min |
| Ball diameter Dw | 7.938 mm |
| Number of balls z | 21 |
| Reference grease quantity Gref | 2.3 cm³ |
| Preload class A GA | 83 N |
| Static axial stiffness, preload class A | 46 N/µm |
| Preload class B GB | 250 N |
| Static axial stiffness, preload class B | 74 N/µm |
| Preload class C GC | 500 N |
| Static axial stiffness, preload class C | 102 N/µm |
| Calculation factor f | 1.16 |
| Calculation factor f1 | 1 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.05 |
| Calculation factor f2C | 1.09 |
| Calculation factor fHC | 1.01 |
| Calculation factor f0 | 8.4 |
| Mass bearing | 0.14 kg |
Detailed Parameters
parameter：
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