1. with OPEN,Z,ZZ,RS,2RS,N,NR bearings 2. wide varieties 3. less coefficient of friction 4.high limiting speed SERIESBORE DIAMETER(MM)VARIANT STRUCTURE6180010-320Z,ZZ,RS,2RS6190010-280Z,ZZ,RS,2RS,N,NR,ZN,ZNR1600010-260600010-260Z,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,2RSinner packing:plastic bag,tube in ...