Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF 6311 NR
6311 NR
SKF Explorer
Dimensions
| d | 55 | mm | |
| D | 120 | mm | |
| B | 29 | mm | |
| d1 | ≈ | 75.34 | mm |
| D2 | ≈ | 103.7 | mm |
| D3 | 115.21 | mm | |
| D4 | 129.7 | mm | |
| b | 3.1 | mm | |
| C | 4.06 | mm | |
| f | 2.82 | mm | |
| r0 | max. | 0.6 | mm |
| r1,2 | min. | 2 | mm |
Abutment dimensions
| da | min. | 66 | mm |
| Da | max. | 109 | mm |
| Db | min. | 131 | mm |
| ba | min. | 3.5 | mm |
| Ca | max. | 6.88 | mm |
| ra | max. | 2 | mm |
Calculation data
| Basic dynamic load rating | C | 74.1 | kN | |
| Basic static load rating | C0 | 45 | kN | |
| Fatigue load limit | Pu | 1.9 | kN | |
| Reference speed | 12000 | r/min | ||
| Limiting speed | 8000 | r/min | ||
| Calculation factor | kr | 0.03 | ||
| Calculation factor | f0 | 13 |
Mass
| Mass bearing | 1.41 | kg |
Included products
| Snap ring | SP 120 | |||