21308 EKW
Spherical roller bearing with tapered boreSpherical roller bearings can accommodate heavy loads in both directions. They are self-aligning and accommodate misalignment and shaft deflections, with virtually no increase in friction or temperature. They can be used in a modular system, including housings, sleeves and nuts.
- Accommodate misalignment
- High load carrying capacity
- Low friction and long service life
- Increased wear resistance
Description
| SKF performance class | SKF Explorer |
| Bore type | Tapered 1:12 |
Dimensions
| d | 40 mm | Bore diameter |
|---|---|---|
| D | 90 mm | Outside diameter |
| B | 23 mm | Width |
| d2 | ≈ 60 mm | Shoulder diameter of inner ring |
| D1 | ≈ 79.8 mm | Shoulder/recess diameter of outer ring |
| r1,2 | min. 1.5 mm | Chamfer dimension |
Abutment dimensions
| da | min. 47.2 mm | Diameter of shaft abutment |
|---|---|---|
| Da | max. 81 mm | Diameter of housing abutment |
| ra | max. 1.5 mm | Radius of fillet |
Calculation data
| Basic dynamic load rating | C | 107 kN |
|---|---|---|
| Basic static load rating | C0 | 108 kN |
| Fatigue load limit | Pu | 12 kN |
| Reference speed | 7 000 r/min | |
| Limiting speed | 9 500 r/min | |
| Limiting value | e | 0.24 |
| Calculation factor | Y1 | 2.8 |
| Calculation factor | Y2 | 4.2 |
| Calculation factor | Y0 | 2.8 |
Mass
| Mass | 0.75 kg |
Tolerance class
| Dimensional tolerances | Normal |
| Radial run-out | P5 |
Tolerances and clearances
Bearing interfaces
