... Ball bearing.Roller bearing. hub bearing 2.Material,steel GCR - 15 3.Certificate: ISO 9001:2000 4.Hardness: 62 Deep groove ball ... 30300, 32200, 32300, 33000,6000,6200,6300,6400,51100,51200,51300,51400,DAC,BC, etc.Ring ... provide small & miniature standard and non-standard ball bearings. ApplicationWidely used in home appliances, electric ... market in ... High quality Ball bearing,Roller bearing,Auto-hub ...