Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF 312 NR
312 NR
Dimensions
| d | 60 | mm | |
| D | 130 | mm | |
| B | 31 | mm | |
| d1 | ≈ | 81.86 | mm |
| D2 | ≈ | 112.2 | mm |
| D3 | 125.22 | mm | |
| D4 | 139.7 | mm | |
| b | 3.1 | mm | |
| C | 4.06 | mm | |
| f | 2.82 | mm | |
| r0 | max. | 0.6 | mm |
| r1,2 | min. | 2.1 | mm |
Abutment dimensions
| da | min. | 72 | mm |
| Da | max. | 118 | mm |
| Db | min. | 141 | mm |
| ba | min. | 3.5 | mm |
| Ca | max. | 6.88 | mm |
| ra | max. | 2 | mm |
Calculation data
| Basic dynamic load rating | C | 91.3 | kN | |
| Basic static load rating | C0 | 78 | kN | |
| Fatigue load limit | Pu | 3.35 | kN | |
| Reference speed | 9500 | r/min | ||
| Limiting speed | 6000 | r/min | ||
| Calculation factor | kr | 0.05 |
Mass
| Mass bearing | 1.85 | kg |
Included products
| Snap ring | SP 130 | |||