... of sizes and shapes. It is suitable for precision instrument, low noise electromotor, automobile and motorcycle, etc. Brand name famous brandSeries6000 ... 829 Series Bore diameter(mm) Variant structure61800 10-320 Z,ZZ,RS, 2RS 61900 10-280 Z, ZZ,RS, 2RS, ... N,NR,ZN,ZNR16000 10-260 6000 10-260 Z, ZZ,RS, 2RS, N,NR,ZN, ... ZNR 6200 10-220 ZZ,RS, 2RS, N,NR,ZN,ZNR 6300 10-190 ZZ,RS, 2RS, N ...