Machine tool spindle bearings Agular contact ball bearings High degree of running accuracy GB/T307.1-2005/ ... time3.Competitive price1. product specification:High super precision angular contact ball bearing(1) precision:P2, P4, P5, P6, P0(2) process ... series(4) structure:AC, C, B , with contact angle 25,15,40 degree, brass cage or nylon cage(5material:Chrome steel ...