1220
Self-aligning ball bearingSelf-aligning ball bearings have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. They are insensitive to angular misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection.
- Accommodate static and dynamic misalignment
- Excellent high-speed performance
- Excellent light load performance
- Low friction
Description
| Bore type | Cylindrical |
Dimensions
| d | 100 mm | Bore diameter |
|---|---|---|
| D | 180 mm | Outside diameter |
| B | 34 mm | Width |
| d1 | ≈ 127 mm | Shoulder diameter inner ring |
| D1 | ≈ 155.8 mm | Shoulder diameter outer ring |
| r1,2 | min. 2.1 mm | Chamfer dimension |
Abutment dimensions
| da | min. 112 mm | Abutment diameter shaft |
|---|---|---|
| Da | max. 168 mm | Abutment diameter housing |
| ra | max. 2 mm | Fillet radius |
Calculation data
| Basic dynamic load rating | C | 68.9 kN |
|---|---|---|
| Basic static load rating | C0 | 30 kN |
| Fatigue load limit | Pu | 1.29 kN |
| Reference speed | 7 500 r/min | |
| Limiting speed | 4 800 r/min | |
| Permissible angular misalignment | α | 2.5 ° |
| Calculation factor | kr | 0.04 |
| Limiting value | e | 0.17 |
| Calculation factor | Y0 | 4 |
| Calculation factor | Y1 | 3.7 |
| Calculation factor | Y2 | 5.7 |
Mass
| Mass bearing | 3.7 kg |
Tolerances and clearances
Bearing data
Bearing interfaceS
