Model: 603-609,6000-6020,623-629,6200-6220,635-639,6300-6318,681-689,6800,6868,691-699, ... 6900-6968,62200,62300,R,series and so on. deep groove ball bearing 1)the miniature ball bearings are widely ... : 3-100mm3)Model: 603-609,6000-6020,623-629,6200-6220,635-639,6300-6318,681-689,6800,6868,691-699 ... available7) Seal: open, Z, ZZ, RS, 2RS8) Different sizes available deep groove ball bearing