... TIMKEN HRB ZWZ ball bearing 6203zz 6208zz 6309zz Bearings 1.Seal form: open style, Z, ZZ, RS, 2RS, 2RZ2 ... ), stainless steel(AISI440C, AISI304, AISI316), ceramics8.Keeper: stainless steel, PTFE, nylon9.Bearing ferrule and ball hardness: 59 - 63HRCExplanation: 6200zz 6201zz ... 6004rs 6005rs 6006rs 6007rs 6008rs 6009rs 6900 series608zz sesies High quality deep groove ball bearing 6200 series skf/nsk/ntn ...