| Dimensions (metric) | d | 20 | ![]() With Inner Race & Two Seals 2RS |
| D | 37 | ||
| B | 17 | ||
| B1 | 18 | ||
| Approx. Wgt. lbs | .200 | ||
| Interchange | FAG | NA 4904.2RSR | |
| INA | NA 4904.2RSR | ||
| SKF | NA 4904.2RS | ||
| Torrington | NA 4904.2RS | ||
Hot number:FAG RNA 6904 OKB 18Z2 OKB 2311Z1 NSK 18BSC01 AST AST11 120100 NSK B25-139 NTN BK2018L SKF C2208KV NTN KJ40X45X26.8 NSK NJ2210 ET NSK TL23048CAE4 Torrington LS-30 American LS-311/2 STEYR NJ-324 SKF 6409 N
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