| 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:ASK NJ 221 NSK 6213ZZ OKB CRAFT 61805-2RS NTN 6208LB CX 81164 NTN 8574/8520CD FBJ HM804849/HM804810 IKO KT 223015 JNS NK7/12M AST SMF104 INA XSA 14 0544 N New Departure WC87501 SNR 6203-RS NOK AS568-111-B
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