| Dimensions (metric) | d | 4 | ![]() Open |
| D | 9 | ||
| B | 2.5 | ||
| Approx. Wgt. lbs | .0020 | ||
| Interchange | ADR | - | |
| ISC | 684h | ||
| NMB | SSL-840 | ||
| NTN | F684 | ||
| RMB | - | ||
| SKF | W618/4 | ||
| 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:TORRINGTON 22308 CC/W33 SKF * 30306 J2/Q Timken 120RF30 ISO 32918 FBJ 4211ZZ NKE 7309-BE-TVP NTN E-4R10010 KOYO SE 608 ZZSTPR SNR USF206 FAG 6234M SKF NJ-422 SKF 30x55x7 CRW1 R SKF W 637/8 XR GMN HYS61911CTAUP NOK BRT3 40 56 3
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