... tool spindle bearings Agular contact ball bearings High degree of running accuracy GB/T307.1- ... price1. product specification:High super precision angular contact ball bearing(1) precision:P2, P4, P5, P6, P0(2) process range: ... 7000,7200, 7300, 71800 series(4) structure:AC, C, B , with contact angle 25,15,40 degree, ... 70% Before Shipment(2) 30% T/T in advance.70% L/C at sight(3) 100% L/C at sight.6. ...