| Dimensions (metric) | d | 8 | ![]() Open |
| D | 16 | ||
| B | 4 | ||
| Approx. Wgt. lbs | .0070 | ||
| Interchange | ADR | - | |
| ISC | 688h | ||
| NMB | SSL-1680 | ||
| NTN | F688 | ||
| RMB | UL816X | ||
| SKF | W618/8 | ||
| 1) Outer races, inner races and balls are manufactured from 440C or equivalent stainless steel. They are through hardened to a hardness of 55-57RC. 2) The cages are manufactured from 304 or equivalent stainless steel. | |||
Hot number:NTN NU 234 E FAG NCF2988V.C3 TIMKEN 32012X/32012X ISO 33890/33821 NACHI 6910NSE CX 88900/88126 KOYO B55 Timken NP484279/NP905784 NACHI UCFL307 INA ZKLF1255-2Z FAG 7303BG RBC MR-104-N RIV RMS-141/2 SKF 35x68x8 CRW1 V SKF 61809-2RZ
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