... .Bearings OEM service 4.ISO9001:2008 HYIB Low Noise Deep Groove Ball Bearings 6313 2RS1. Bearing Material:chrome steel2. ISO9001:2008 certificate3. BearinSg OEM ... noise electromotor, automobile and motorcycle, etc. Brand name famous brandSeries6000 6200 6300 6400 61800 61900 R series,F seriesRings MaterialStainless steel ... 10-260 Z, ZZ,RS, 2RS, N,NR,ZN,ZNR 6200 10-220 ZZ,RS, 2RS, N,NR,ZN,ZNR 6300 ...