| Bearing Number | Boundary dimensions mm | |||
| d | D | B | D1 | |
| F68/1.5 | 1.5 | 4 | 1.2 | 5 | F68/1.5C3 | 1.5 | 4 | 1.2 | 5 |
| F68/2.5 | 2.5 | 6 | 1.8 | 7.1 | F68/2.5C3 | 2.5 | 6 | 1.8 | 7.1 |
| F681 | 1 | 3 | 1 | 3.8 | F681C3 | 1 | 3 | 1 | 3.8 |
| F682 | 2 | 5 | 1.5 | 6.1 | F682C3 | 2 | 5 | 1.5 | 6.1 |
| F683 | 3 | 7 | 2 | 8.1 | F683C3 | 3 | 7 | 2 | 8.1 |
| F684 | 4 | 9 | 2.5 | 10.3 | F684C3 | 4 | 9 | 2.5 | 10.3 |
