| Bearing type 轴承型号 | Boundary Dimensions（mm）外形尺寸 | ||
|---|---|---|---|
| d 内径 | D 外径 | B 内圈 宽度 | |
| W 63803-2RS1 | 17 | 26 | 7 |
| W 63803-2RZ | 17 | 26 | 7 |
| W 63803-2Z | 17 | 26 | 7 |
| W 63804 | 20 | 32 | 10 |
| W 63804 R | 20 | 32 | 10 |
| W 63804 R-2Z | 20 | 32 | 10 |
| W 63804-2RS1 | 20 | 32 | 10 |
| W 63804-2RZ | 20 | 32 | 10 |
| W 63804-2Z | 20 | 32 | 10 |
| W 63805 | 25 | 37 | 10 |
| W 63805 R | 25 | 37 | 10 |
| W 63805 R-2Z | 25 | 37 | 10 |
| W 63805-2RS1 | 25 | 37 | 10 |
| W 63805-2RZ | 25 | 37 | 10 |
| W 63805-2Z | 25 | 37 | 10 |
| W 63806 | 30 | 42 | 10 |
| W 63806 R | 30 | 42 | 10 |
| W 63806 R-2Z | 30 | 42 | 10 |
| W 63806-2RS1 | 30 | 42 | 10 |
| W 63806-2RZ | 30 | 42 | 10 |
| W 63806-2Z | 30 | 42 | 10 |
| W 638-2RS1 | 8 | 28 | 9 |
| W 638-2RZ | 8 | 28 | 9 |
| W 638-2Z | 8 | 28 | 9 |
| W 639 | 9 | 30 | 10 |
| W 639/1.5 R-2Z | 1.5 | 5 | 2.6 |
| W 639/1.5-2Z | 1.5 | 5 | 2.6 |
| W 639/2 R-2Z | 2 | 6 | 3 |
| W 639/2.5 R-2ZS | 2.5 | 7 | 3.5 |
| W 639/2.5-2ZS | 2.5 | 7 | 3.5 |
