Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF W 637/4 XR-2Z
W 637/4 XR-2Z
Dimensions
| d | 4 | mm | |
| D | 8 | mm | |
| B | 3 | mm | |
| d1 | ≈ | 5 | mm |
| D2 | ≈ | 7.4 | mm |
| D3 | 9.2 | mm | |
| C | 0.6 | mm | |
| r1,2 | min. | 0.1 | mm |
Abutment dimensions
| da | min. | 4.8 | mm |
| da | max. | 4.9 | mm |
| ra | max. | 0.1 | mm |
Calculation data
| Basic dynamic load rating | C | 0.225 | kN | |
| Basic static load rating | C0 | 0.072 | kN | |
| Fatigue load limit | Pu | 0.003 | kN | |
| Reference speed | 150000 | r/min | ||
| Limiting speed | 75000 | r/min | ||
| Calculation factor | kr | 0.02 | ||
| Calculation factor | f0 | 7.2 |
Mass
| Mass bearing | 0.00061 | kg |