Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF 308 NR
308 NR
Dimensions
| d | 40 | mm | |
| D | 90 | mm | |
| B | 23 | mm | |
| d1 | ≈ | 56.11 | mm |
| D2 | ≈ | 77.7 | mm |
| D3 | 86.79 | mm | |
| D4 | 96.5 | mm | |
| b | 2.7 | mm | |
| C | 3.28 | mm | |
| f | 2.46 | mm | |
| r0 | max. | 0.6 | mm |
| r1,2 | min. | 1.5 | mm |
Abutment dimensions
| da | min. | 49 | mm |
| Da | max. | 81 | mm |
| Db | min. | 98 | mm |
| ba | min. | 3 | mm |
| Ca | max. | 5.74 | mm |
| ra | max. | 1.5 | mm |
Calculation data
| Basic dynamic load rating | C | 45.7 | kN | |
| Basic static load rating | C0 | 36 | kN | |
| Fatigue load limit | Pu | 1.53 | kN | |
| Reference speed | 14000 | r/min | ||
| Limiting speed | 8500 | r/min | ||
| Calculation factor | kr | 0.05 |
Mass
| Mass bearing | 0.64 | kg |
Included products
| Snap ring | SP 90 | |||