S7008 FW/HC
Single row angular contact ball bearingSingle row angular contact ball bearings can accommodate radial and axial loads acting simultaneously, where the axial load acts in one direction only. They can operate at high speeds and, depending on the variant, even very high speeds. They are more suitable than deep groove ball bearings for supporting large axial forces acting in one direction.
- High-speed capability
- Accommodate relatively high radial loads and large unilateral axial loads
Description
| Universal matching bearing(s) | No |
Dimensions
| d | 40 mm | Bore diameter |
|---|---|---|
| D | 68 mm | Outside diameter |
| B | 15 mm | Width |
| d1 | 49.7 mm | Shoulder diameter of inner ring (large side face) |
| d2 | 47.6 mm | Shoulder diameter of inner ring (small side face) |
| D2 | 60.85 mm | Recess diameter of outer ring (large side face) |
| r1,2 | min. 1 mm | Chamfer dimension |
| r3,4 | min. 0.6 mm | Chamfer dimension |
| a | 16.3 mm | Distance from side face to pressure point |
Abutment dimensions
| da | min. 44.6 mm | Diameter of shaft abutment |
|---|---|---|
| da | max. 49.1 mm | Diameter of shaft abutment |
| db | min. 44.6 mm | Diameter of shaft abutment |
| db | max. 47 mm | Diameter of shaft abutment |
| Da | max. 63.4 mm | Diameter of housing abutment |
| Db | max. 63.8 mm | Diameter of housing abutment |
| ra | max. 1 mm | Radius of fillet |
| rb | max. 0.6 mm | Radius of fillet |
Calculation data
| Basic dynamic load rating | C | 12.1 kN |
|---|---|---|
| Basic static load rating | C0 | 7.5 kN |
| Fatigue load limit | Pu | 0.232 kN |
| Attainable speed for grease lubrication | 31 000 r/min | |
| Contact angle | α | 18 ° |
| Ball diameter | Dw | 7.144 mm |
| Number of balls (per bearing) | z | 19 |
| Calculation factor | f0 | 8.1 |
|---|---|---|
| Limiting value | e | 0.57 |
| Axial load factor (single, tandem) | Y2 | 1 |
| Axial load factor (single, tandem) | Y0 | 0.42 |
| Radial load factor (single, tandem) | X2 | 0.43 |
| Axial load factor (back-to-back, face-to-face) | Y1 | 1.09 |
| Axial load factor (back-to-back, face-to-face) | Y2 | 1.63 |
| Axial load factor (back-to-back, face-to-face) | Y0 | 0.85 |
| Radial load factor (back-to-back, face-to-face) | X2 | 0.7 |
Mass
| Mass | 0.17 kg |
Tolerances and clearances
Product details
- Tolerances: P4A, P4B, P4, PA9A, P2
- Clamping and fitting forces: D design, E design, B design
- Designation suffixes H, H1, L and L1 identify variants for direct oil-air lubrication.
Principles of bearing selection and application
- Chamfer dimensions
- Seat tolerances for standard conditions: shafts, housings
- Values for ISO tolerance classes: shafts, housings
- Speed dependent initial grease fill → Initial grease fill
