... friction coefficient we can produce high precision thin section ball bearings, KAA15XLO,KA025CPO,KD140XPO,KD180XPO,KD180ARO etc The ... major characterizations of the PRS thin-section ball bearing are that, light weight, sufficient rigidity, small ... glass working equipment ,index and rotary tables ,packing equipment ,machine tools ,medical devices ,optical scanning equipment ,radar, satellite and ...