SKF NATR 17 X cylindrical roller bearings
SKF NATR 17 X cylindrical roller bearings Industries and Applications ? We sell discount online as 55 Outer Diameter (mm) well as cheap 90 Bore Diameter (mm) machinery 90x55x18 Size (mm) parts.
| Size (mm) | 90x55x18 |
| Bore Diameter (mm) | 90 |
| Outer Diameter (mm) | 55 |
| Width (mm) | 18 |
| d | 55 mm |
| D | 90 mm |
| B | 18 mm |
| d1 | 67.73 mm |
| d2 | 65.6 mm |
| D1 | 77.25 mm |
| K | 0.5 mm |
| C1 | 6.3 mm |
| r1,2 – min. | 1.1 mm |
| r3,4 – min. | 0.6 mm |
| a | 26.1 mm |
| da – min. | 61 mm |
| db – min. | 61 mm |
| Da – max. | 84 mm |
| Db – max. | 85.8 mm |
| ra – max. | 1 mm |
| rb – max. | 0.6 mm |
| dn | 69.6 mm |
| Basic dynamic load rating – C | 15.9 kN |
| Basic static load rating – C0 | 11.6 kN |
| Fatigue load limit – Pu | 0.49 kN |
| Limiting speed for grease lubrication | 23000 r/min |
| Limiting speed for oil lubrication | 35000 mm/min |
| Ball – Dw | 7.938 mm |
| Ball – z | 24 |
| Gref | 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 | 140 N |
| Preload class B – GB | 430 N |
| Preload class C – GC | 860 N |
| Calculation factor – f | 1.07 |
| Calculation factor – f1 | 0.99 |
| Calculation factor – f2A | 1 |
| Calculation factor – f2B | 1.03 |
| Calculation factor – f2C | 1.06 |
| Calculation factor – fHC | 1.01 |
| Preload class A | 128 N/micron |
| Preload class B | 193 N/micron |
| Preload class C | 251 N/micron |
| r1,2 min. | 1.1 mm |
| r3,4 min. | 0.6 mm |
| da min. | 61 mm |
| db min. | 61 mm |
| Da max. | 84 mm |
| Db max. | 85.8 mm |
| ra max. | 1 mm |
| rb max. | 0.6 mm |
| Basic dynamic load rating C | 15.9 kN |
| Basic static load rating C0 | 11.6 kN |
| Fatigue load limit Pu | 0.49 kN |
| Attainable speed for grease lubrication | 23000 r/min |
| Attainable speed for oil-air lubrication | 35000 r/min |
| Ball diameter Dw | 7.938 mm |
| Number of balls z | 24 |
| Reference grease quantity Gref | 5 cm³ |
| Preload class A GA | 140 N |
| Static axial stiffness, preload class A | 128 N/µm |
| Preload class B GB | 430 N |
| Static axial stiffness, preload class B | 193 N/µm |
| Preload class C GC | 860 N |
| Static axial stiffness, preload class C | 251 N/µm |
| Calculation factor f | 1.07 |
| Calculation factor f1 | 0.99 |
| Calculation factor f2A | 1 |
| Calculation factor f2B | 1.03 |
| Calculation factor f2C | 1.06 |
| Calculation factor fHC | 1.01 |
| 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 | 0.36 kg |
Detailed Parameters
parameter：
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