Bearings, units and housings -- Ball bearings -- Deep groove ball bearings -- Deep groove ball bearings -- SKF 309-ZNR
309-ZNR
Dimensions
| d | 45 | mm | |
| D | 100 | mm | |
| B | 25 | mm | |
| d1 | ≈ | 62.18 | mm |
| D2 | ≈ | 86.7 | mm |
| D3 | 96.8 | mm | |
| D4 | 106.5 | mm | |
| b | 2.7 | mm | |
| C | 3.28 | mm | |
| r0 | max. | 0.6 | mm |
| r1,2 | min. | 1.5 | mm |
Abutment dimensions
| da | min. | 54 | mm |
| da | max. | 62 | mm |
| Da | max. | 91 | mm |
| Db | min. | 108 | mm |
| ba | min. | 3 | mm |
| Ca | max. | 5.74 | mm |
| ra | max. | 1.5 | mm |
Calculation data
| Basic dynamic load rating | C | 55 | kN | |
| Basic static load rating | C0 | 44 | kN | |
| Fatigue load limit | Pu | 1.86 | kN | |
| Reference speed | 13000 | r/min | ||
| Limiting speed | 7500 | r/min | ||
| Calculation factor | kr | 0.05 |
Mass
| Mass bearing | 0.88 | kg |