Deep groove ball bearing 1.GCr15, GCr15SiMn 2.High precision,long life 3.Excellent ... ,NR,ZN,ZNR640010-100N,NRMINIATURE BEARINGS3-10Z,ZZ,RS,2RS deep groove ball bearing1. with OPEN,Z,ZZ,RS,2RS,N,NR products2 ... , as a widely used type of bearings in machinery industryDeep groove ball bearings mainly take radial load as well as take moderate ...