| Bearing Number | Boundary dimensions | |||
| d(mm) | d (in) | D (mm) | D (in) | |
| 22308 | 40 | 1.576 | 90 | 3.546 | 22308K | 40 | 1.576 | 90 | 3.546 |
| 22308KW33C3 | 40 | 1.576 | 90 | 3.546 | 22308W33C3 | 40 | 1.576 | 90 | 3.546 |
| 22309 | 45 | 1.773 | 100 | 3.94 | 22309K | 45 | 1.773 | 100 | 3.94 |
| 22309KW33C3 | 45 | 1.773 | 100 | 3.94 | 22309W33C3 | 45 | 1.773 | 100 | 3.94 |
| 22310 | 50 | 1.97 | 110 | 4.334 | 22310K | 50 | 1.97 | 110 | 4.334 |
| 22310KW33C3 | 50 | 1.97 | 110 | 4.334 | 22310W33C3 | 50 | 1.97 | 110 | 4.334 |