Machine tool spindle bearings Agular contact ball bearings High degree of running accuracy GB/T307.1-2005/ISO492-2002 ... good quality2.Strictly guarantee delivery time3.Competitive price1. product specification:High super precision angular contact ball bearing(1) precision:P2, P4 ... id 35 mm to OD 1600 mm(3) series:71900, 7000,7200, 7300, 71800 series(4) structure:AC, C, B , with contact ...