| Bearing Number | Boundary dimensions mm | |||
| d | D | B | D1 | |
| F688-Z | 8 | 16 | 5 | 18 | F688-ZZ | 8 | 16 | 5 | 18 |
| F687-Z | 7 | 14 | 5 | 16 | F687-ZZ | 7 | 14 | 5 | 16 |
| F686-Z | 6 | 13 | 5 | 15.2 | F686-ZZ | 6 | 13 | 5 | 15.2 |
| F685-Z | 5 | 11 | 5 | 12.5 | F685-ZZ | 5 | 11 | 5 | 12.5 |
| F684-Z | 4 | 9 | 4 | 10.3 | F684-ZZ | 4 | 9 | 4 | 10.3 |
| F683-Z | 3 | 7 | 3 | 8.1 | F683-ZZ | 3 | 7 | 3 | 8.1 |
