| Old No. | R-4-ZZ | ![]() Two Shields ZZ | |
| Dimensions (metric) | d | 4 | |
| D | 16 | ||
| B | 5 | ||
| Approx. Wgt. lbs | .0120 | ||
| Interchange | ADR | 634ZZ | |
| ISC | 634ZZ | ||
| Nachi | 634ZZ | ||
| NMB | R-1640ZZ | ||
| NTN | 634ZZ | ||
| RMB | RV416 | ||
| SKF | 634ZZ | ||
| 1) Also available with one shield - suffix “Z”. No change in width dimensions. | |||
Hot number:NTN NJ409+HJ409 INA IR17X20X30.5 SKF 305806 C-2Z TIMKEN 16582/16522 OKB FAG 30230-A Fersa 482/472 NTN 4T-33112 KOYO 6213BI AST H7034AC NACHI NUP 2330 E NSK RNA69/28 NH XLS-181/2 NTN 63/28-2Z NOK SC 18 32 9 NBR
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