... two kinds, single row deep groove ball bearing type code for 6, double row deep groove ball bearing code is ... production, the most widely used kind of bearing.2. Secification data Bearing old No.:60203Bearing new No.: 6203Bore: 17mm OD: ... speed limit. 5.ApplicationDeep groove ball bearing can be used for transmission, instruments and meters, electric motor, electric appliance, internal combustion ...