1)deep groove ball bearing:6000,6200,6300 series; 2)ABEC-3,5;Z2V2,Z3V3; 3)ISO ... No.1: Bearings JYB can supply you:1).6000 Series: 606,607,608,609,6000,6001,6002,6003,6004 --- Open, ZZ(Steel ... Shields), 2RS, UG, 2RZ;2).6200 Series: 626,627 ... --- Open, ZZ(Steel Shields), 2RS, UG, 2RZ;3).6300 Series: 6300,6301,6302 --- Open, ZZ(Steel Shields), 2RS, UG, ...