Bearings, units and housings -- Super-precision bearings -- Angular contact ball bearings -- Angular contact ball bearings, super-precision -- SKF S7008 FW/HC
S7008 FW/HC
Dimensions
| d | 40 | mm | |
| D | 68 | mm | |
| B | 15 | mm | |
| d1 | 49.7 | mm | |
| d2 | 47.6 | mm | |
| D2 | 60.85 | mm | |
| r1,2 | min. | 1 | mm |
| r3,4 | min. | 0.6 | mm |
| a | 16.3 | mm |
Abutment dimensions
| da | min. | 44.6 | mm |
| da | max. | 49.1 | mm |
| db | min. | 44.6 | mm |
| db | max. | 47 | mm |
| Da | max. | 63.4 | mm |
| Db | max. | 63.8 | mm |
| ra | max. | 1 | mm |
| rb | max. | 0.6 | mm |
Calculation data
| Basic dynamic load rating | C | 12.1 | kN | |
| Basic static load rating | C0 | 7.5 | kN | |
| Fatigue load limit | Pu | 0.315 | kN | |
| Attainable speed for grease lubrication | 31000 | r/min | ||
| Ball diameter | Dw | 7.144 | mm | |
| Number of balls | z | 19 | ||
| Calculation factors | ||||
| Calculation factor | e | 0.57 | ||
| Calculation factor (single, tandem) | Y2 | 1 | ||
| Calculation factor (single, tandem) | Y0 | 0.42 | ||
| Calculation factor (single, tandem) | X2 | 0.43 | ||
| Calculation factor (back-to-back, face-to-face) | Y1 | 1.09 | ||
| Calculation factor (back-to-back, face-to-face) | Y2 | 1.63 | ||
| Calculation factor (back-to-back, face-to-face) | Y0 | 0.84 | ||
| Calculation factor (back-to-back, face-to-face) | X2 | 0.7 | ||
Mass
| Mass bearing | 0.17 | kg |