Deep groove ball bearing 1.GCr15, GCr15SiMn 2.High precision,long life 3.Excellent service 4.ISO9001:2000 SERIESBORE DIAMETER(MM)VARIANT STRUCTURE6180010-320Z,ZZ,RS,2RS6190010-280Z,ZZ,RS,2RS,N,NR,ZN,ZNR1600010-260 600010-260Z,ZZ,RS,2RS,N,NR,ZN,ZNR620010-220Z,ZZ,RS,2RS,N,NR,ZN,ZNR630010-190Z,ZZ,RS,2RS,N,NR,ZN,ZNR640010-100N,NRMINIATURE BEARINGS3-10Z,ZZ,RS,2RS deep groove ball bearing1. with OPEN,Z ...