... 5.Cleaning 6.Greasing & gland 7.Rust prevention 8.Packing Deep Groove Ball Bearings Serives 63001035110.05163011237120.06063031747140.11363052562170.23563073580210.464630945100250 ... .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 ...