| Bearing model | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| W 619/2 XR | 2 | 6 | 2.5 |
| W 619/2 R | 2 | 6 | 2.3 |
| W 619/2 X | 2 | 6 | 2.5 |
| W 619/2 XR-2Z | 2 | 6 | 2.5 |
| W 602 X-2ZS | 2 | 7 | 3 |
| W 618/2 | 2 | 5 | 1.5 |
| WBB1-8701 | 2 | 7 | 2.5 |
| W 639/2-2Z | 2 | 6 | 3 |
| W 630/2-2ZS | 2 | 7 | 3.5 |
| W 618/2 R | 2 | 5 | 1.5 |
| W 618/2 X | 2 | 5 | 2 |
| WBB1-8701 R | 2 | 7 | 2.5 |
| W 619/2 | 2 | 6 | 2.3 |
| W 619/2-2Z | 2 | 6 | 2.3 |
| D/W R1-4 | 1.984 | 6.35 | 2.38 |
| D/W RW1-4 | 1.984 | 6.35 | 3.175 |
| D/W R1-4 R-2Z | 1.984 | 6.35 | 3.571 |
| D/W RW1-4 R-2Z | 1.984 | 6.35 | 4.366 |
| D/W R1-4-2Z | 1.984 | 6.35 | 3.571 |
| D/W R1-4-2ZS | 1.984 | 6.35 | 3.571 |
| D/W RW1-4-2ZS | 1.984 | 6.35 | 4.366 |
| D/W RW1-4-2Z | 1.984 | 6.35 | 4.366 |
| D/W R1-4 R | 1.984 | 6.35 | 2.38 |
| D/W R1-4 R-2ZS | 1.984 | 6.35 | 3.571 |
| D/W RW1-4 R | 1.984 | 6.35 | 3.175 |
| W 638/1.5 R-2Z | 1.5 | 4 | 2 |
| W 60/1.5 | 1.5 | 6 | 2.5 |
| W 638/1.5-2Z | 1.5 | 4 | 2 |
| W 639/1.5-2Z | 1.5 | 5 | 2.6 |
| W 630/1.5-2Z | 1.5 | 6 | 3 |
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