| Bearing type | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| W 61902 | 15 | 28 | 7 |
| W 61902 R | 15 | 28 | 7 |
| W 61902 R-2RS1 | 15 | 28 | 7 |
| W 61902 R-2RZ | 15 | 28 | 7 |
| W 61902 R-2Z | 15 | 28 | 7 |
| W 61902-2RS1 | 15 | 28 | 7 |
| W 61902-2RZ | 15 | 28 | 7 |
| W 61902-2Z | 15 | 28 | 7 |
| W 61903 | 17 | 30 | 7 |
| W 61903 R | 17 | 30 | 7 |
| W 61903 R-2Z | 17 | 30 | 7 |
| W 61903-2RS1 | 17 | 30 | 7 |
| W 61903-2RZ | 17 | 30 | 7 |
| W 61903-2Z | 17 | 30 | 7 |
| W 61904 | 20 | 37 | 9 |
| W 61904 R | 20 | 37 | 9 |
| W 61904 R-2Z | 20 | 37 | 9 |
| W 61904-2RS1 | 20 | 37 | 9 |
| W 61904-2RZ | 20 | 37 | 9 |
| W 61904-2Z | 20 | 37 | 9 |
| W 61905 | 25 | 42 | 9 |
| W 61905 R | 25 | 42 | 9 |
| W 61905 R-2Z | 25 | 42 | 9 |
| W 61905-2RS1 | 25 | 42 | 9 |
| W 61905-2RZ | 25 | 42 | 9 |
| W 61905-2Z | 25 | 42 | 9 |
| W 61906 | 30 | 47 | 9 |
| W 61906 R | 30 | 47 | 9 |
| W 61906 R-2Z | 30 | 47 | 9 |
| W 61906-2RS1 | 30 | 47 | 9 |
