HYIB Deep Groove Ball Bearings 6313 2RS 1.Material:GCr15 SiMn 2.Low Noise, ZV2 Grade 3. ... 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,NR,ZN,ZNR 6400 ...