| Bearing type | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| W 619/8 | 8 | 19 | 6 |
| W 619/8 R | 8 | 19 | 6 |
| W 619/8 R-2RS1 | 8 | 19 | 6 |
| W 619/8 R-2Z | 8 | 19 | 6 |
| W 619/8-2RS1 | 8 | 19 | 6 |
| W 619/8-2RZ | 8 | 19 | 6 |
| W 619/8-2Z | 8 | 19 | 6 |
| W 619/9 | 9 | 20 | 6 |
| W 619/9 R | 9 | 20 | 6 |
| W 619/9 R-2RS1 | 9 | 20 | 6 |
| W 619/9 R-2Z | 9 | 20 | 6 |
| W 619/9-2RS1 | 9 | 20 | 6 |
| W 619/9-2RZ | 9 | 20 | 6 |
| W 619/9-2Z | 9 | 20 | 6 |
| W 61900 | 10 | 22 | 6 |
| W 61900 R | 10 | 22 | 6 |
| W 61900 R-2RS1 | 10 | 22 | 6 |
| W 61900 R-2RZ | 10 | 22 | 6 |
| W 61900 R-2Z | 10 | 22 | 6 |
| W 61900-2RS1 | 10 | 22 | 6 |
| W 61900-2RZ | 10 | 22 | 6 |
| W 61900-2Z | 10 | 22 | 6 |
| W 61901 | 12 | 24 | 6 |
| W 61901 R | 12 | 24 | 6 |
| W 61901 R-2RS1 | 12 | 24 | 6 |
| W 61901 R-2RZ | 12 | 24 | 6 |
| W 61901 R-2Z | 12 | 24 | 6 |
| W 61901-2RS1 | 12 | 24 | 6 |
| W 61901-2RZ | 12 | 24 | 6 |
| W 61901-2Z | 12 | 24 | 6 |
