| Bearing type | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| W 61906-2RZ | 30 | 47 | 9 |
| W 61906-2Z | 30 | 47 | 9 |
| W 61907 | 35 | 55 | 10 |
| W 61907 R | 35 | 55 | 10 |
| W 61907 R-2Z | 35 | 55 | 10 |
| W 61907-2RS1 | 35 | 55 | 10 |
| W 61907-2RZ | 35 | 55 | 10 |
| W 61907-2Z | 35 | 55 | 10 |
| W 61908 | 40 | 62 | 12 |
| W 61908 R | 40 | 62 | 12 |
| W 61908 R-2Z | 40 | 62 | 12 |
| W 61908-2RS1 | 40 | 62 | 12 |
| W 61908-2RZ | 40 | 62 | 12 |
| W 61908-2Z | 40 | 62 | 12 |
| W 61909 | 45 | 68 | 12 |
| W 61909 R | 45 | 68 | 12 |
| W 61909 R-2Z | 45 | 68 | 12 |
| W 61909-2RS1 | 45 | 68 | 12 |
| W 61909-2RZ | 45 | 68 | 12 |
| W 61909-2Z | 45 | 68 | 12 |
| W 61910 | 50 | 72 | 12 |
| W 61910 R | 50 | 72 | 12 |
| W 61910 R-2Z | 50 | 72 | 12 |
| W 61910-2RS1 | 50 | 72 | 12 |
| W 61910-2RZ | 50 | 72 | 12 |
| W 61910-2Z | 50 | 72 | 12 |
| W 61911 | 55 | 80 | 13 |
| W 61911-2RS1 | 55 | 80 | 13 |
| W 61911-2Z | 55 | 80 | 13 |
| W 61912 | 60 | 85 | 13 |
