Deep groove ball bearing 6311 55x120x29 mm, open
Ball bearings of the 63 medium series offer a balanced ratio between their radial load carrying capacity, the required installation space, their weight and the admissible speed. Consequently they are versatile.
| d | 55 mm | Bore diameter |
| D | 120 mm | Outside diameter |
| B | 29 mm | Width |
| d1 | 75.3 mm | Shoulder diameter inner ring |
| D2 | 104 mm | Recess diameter outer ring |
| r | 2 mm | Chamfer dimension |
| Cr | 74.1 kN | Basic dynamic load rating |
| C0r | 45 kN | Basic static load rating |
| 12000 r/min | Reference Speed | |
| 8000 r/min | Limiting speed |
| ≈m | 1.35 kg | Weight |
| Bearing steel | Material of race | |
| Sheet steel | Cage | |
| Open | Closures | |
| CN | Radial clearance | |
| P0 | Tolerance |
| SKF | FAG | NSK | NTN | NACHI | TIMKEN |
| 6311 | 6311-C | 6311 | 6311 | 6311 | 311K |
