11208 TN9
Self-aligning ball bearing with extended inner ringSelf-aligning ball bearings, with extended inner ring, 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. The extended inner ring enables use of commercial grade shafting and axially location on the shaft by means of a slot at one end of the inner ring.
- Accommodate static and dynamic misalignment
- Excellent high-speed performance
- Excellent light load performance
- Low friction
- Extended inner ring facilitates ease of mounting
Description
| Bore type | Cylindrical |
Dimensions
| d | 40 mm | Bore diameter |
|---|---|---|
| D | 80 mm | Outside diameter |
| B | 56 mm | Width |
| C | 18 mm | Width outer ring |
| d1 | ≈ 54 mm | Shoulder diameter inner ring |
| D1 | ≈ 67.5 mm | Shoulder diameter outer ring |
| r1,2 | min. 1.1 mm | Chamfer dimension |
Abutment dimensions
| Da | max. 73 mm | Abutment diameter housing |
|---|---|---|
| ra | max. 1.1 mm | Fillet radius |
Calculation data
| Basic dynamic load rating | C | 19 kN |
|---|---|---|
| Basic static load rating | C0 | 6.55 kN |
| Fatigue load limit | Pu | 0.335 kN |
| Limiting speed | 5 000 r/min | |
| Permissible angular misalignment | α | 2.5 ° |
| Calculation factor | kr | 0.04 |
| Limiting value | e | 0.22 |
| Calculation factor | Y0 | 2.8 |
| Calculation factor | Y1 | 2.9 |
| Calculation factor | Y2 | 4.5 |
Mass
| Mass bearing | 0.72 kg |
Tolerances and clearances
Bearing data
Bearing interfaceS
