... steel 2.Little friction torque,suitable for the high speed,low noise,low virbration 3.high precision high quality Deep groove ball ... axial load. With less coefficient of friction, less vibration and noise,less energy consumption, high limiting speed, large size range ... Z3, EMQ V3 Z4, EMQ V45)Application home appliances,low noise and high speed electric motors; automotiveDeep groove ball bearings are ...