| Boundary dimensions(mm) | Designations | Equivalent to foreign designations(For your information) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| d | D | B | Fw | SKF | FAG | NSK | NTN | KOYO | TIMKEN | URB | |
| 200 | 310 | 109 | 234 | NNU4040 | |||||||
| 200 | 310 | 130 | 229 | NNU4940X2 | |||||||
| 200 | 360 | 148 | 242 | NNU4240X1 | |||||||
| 220 | 300 | 80 | 245 | NNU4944 | NNU4944 | NNU4944 | |||||
| 220 | 340 | 96 | 246 | NNU3044X1 | |||||||
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