| Old No. | - | ![]() Two Shields ZZ | |
| Dimensions (inch) | d | .2500 | |
| D | .6250 | ||
| B | .1960 | ||
| Approx. Wgt. lbs | .030 | ||
| Interchange | ADR | Y1/4ZZ | |
| FAF | S1KDD7 | ||
| FAG | - | ||
| ISC | R4ZZS | ||
| MRC | R-4FF | ||
| New Departure | 77R-4 | ||
| NMB | R-4ZZ | ||
| NTN | R4ZZ | ||
| RHP | - | ||
| RMB | RF8020X | ||
| SKF | - | ||
Hot number:ZKL 7310 B NSK NF 326 OKB 32544H NTN 6038Z IKO GBR 283720 UU INA GE 34 ZO NTN KJ35X40X23.8 NACHI N 344 NTN NUP2315E NTN TM-QJ240AWC3S30 CX TUP1 65.70 SKF 2309-2RS SKF (Old No.) H-3138x7 SKF SAF 22215 NOK NE 47
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