| Bearing Number | Boundary dimensions | |||
| d(mm) | d (in) | D (mm) | D (in) | |
| 21320 | 100 | 3.94 | 215 | 8.471 | 21320K | 100 | 3.94 | 215 | 8.471 |
| 21320KW33C3 | 100 | 3.94 | 215 | 8.471 | 21320W33C3 | 100 | 3.94 | 215 | 8.471 |
| 21322 | 110 | 4.334 | 240 | 9.456 | 21322K | 110 | 4.334 | 240 | 9.456 |
| 21322KW33C3 | 110 | 4.334 | 240 | 9.456 | 21322W33C3 | 110 | 4.334 | 240 | 9.456 |