... BOX deep groove ball bearing 6300z low vibration,low noiselow friction moment,long service lifehigh swiveling accuracyexcellent sealing performance Our main products include deep groove ball ... non-standard and special bearings.1.Bore diameter:Φ3mm-Φ50mm2.Bearing range:60series:606,607,608,6000,6001,6002,6003,6004 ... ,6211,621263series:6300,6301,6302,6303,6304,6305,6306,6307,6308,6309,6310,6311,6312s