self -aliging ball bearings 1,high quality 2, long life and low price 3, prompt delivery Self-aliging ball bearingsSeal form: open ... : N,NR. Class of precision: ABEC-1, ABEC-3, ABEC-5, ABEC-7. Vibration rank: V1, V2, V3, ... . Keeper: stainless steel, PTFE, nylon. Bearing ferrule and ball hardness:, 59 - 63 HRC.... Bearing No.Principal dimensions ( ... .215.50.9000and more .... self-aliging ball bearings
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