Agular contact ball bearings High degree of running accuracy Low noise ... guarantee delivery time3.Competitive price1. product specification:High super precision angular contact ball bearing(1) precision:P2, P4, P5, ... , 71800 series(4) structure:AC, C, B , with contact angle 25,15,40 degree, brass cage or nylon ... case(2) For OD above 250 mm: Wrapped with water-proof belt then put in wooden case4. ...