1,high precision and long life 2,low noise and vibration 3,competitive price 4,excellent quality The angular contact ball bearing falls ... pump,air compressor and printer etc.and the four-point contact ball bearing mostly to the roller drum of rolling mill ... INA , TIMKEN , KOYO , ZWZ , HRB , LYC , HCH , TMB , WGB ……Angular Contact Ball BearingSerie Bearings Bore Diameter(mm) 7000C.AC 5-1000 7200C.AC 3 ...