| Dimensions (metric) | d | 8 | ![]() Two Shields ZZ |
| D | 16 | ||
| B | 6 | ||
| Approx. Wgt. lbs | .0090 | ||
| Interchange | ADR | - | |
| ISC | - | ||
| NMB | - | ||
| NTN | - | ||
| RMB | - | ||
| SKF | W638/8-ZZ | ||
| 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. 3) Shields are manufactured from 304 or equivalent stainless steel. | |||
Hot number:ZKL 7207 B/DB AST 24136CK30 PSL 30224A ISO 3780/3720 Timken 39581/39520 Timken 49162/49368 CX 575/572 KOYO M1671 CX NF3220 SKF PCM 210215100 E STEYR 5306 SKF 6334M IPTCI FYT-104X FAG SS6308 SKF 53211 + U 211
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