| Designations (Bearing with tapered bore) | 21309EK | |
| Principal dimensions (mm) | d | 45 |
| D | 100 | |
| B | 25 | |
| r1,2 | 1.5 | |
| Basic load ratings(KN) | Basic load ratings (dynamic) (C) | 121.25 |
| Basic load ratings (static) (C0) | 123.19 | |
| Fatigue load limit (Pu) | 13.7 | |
| Speed ratings(r/min) | Speed ratings (Reference speed) | 6300 |
| Speed ratings (Limting speed) | 7000 | |
| Mass(kg) | 0.99 | |
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