Bearings, units and housings -- Ball bearings -- Self-aligning ball bearings -- Self-aligning ball bearings -- SKF 1209 ETN9
1209 ETN9
Dimensions
| d | 45 | mm | |
| D | 85 | mm | |
| B | 19 | mm | |
| d1 | ≈ | 57.51 | mm |
| D1 | ≈ | 72.5 | mm |
| r1,2 | min. | 1.1 | mm |
Abutment dimensions
| da | min. | 52 | mm |
| Da | max. | 78 | mm |
| ra | max. | 1.1 | mm |
Calculation data
| Basic dynamic load rating | C | 22.9 | kN | |
| Basic static load rating | C0 | 7.8 | kN | |
| Fatigue load limit | Pu | 0.4 | kN | |
| Reference speed | 17000 | r/min | ||
| Limiting speed | 11000 | r/min | ||
| Permissible angular misalignment | a | 2.5 | ° | |
| Calculation factor | kr | 0.04 | ||
| Calculation factor | e | 0.21 | ||
| Calculation factor | Y0 | 3.2 | ||
| Calculation factor | Y1 | 3 | ||
| Calculation factor | Y2 | 4.6 |
Mass
| Mass bearing | 0.47 | kg |