High Quality Hybrid Ceramic Ball Bearings Ceramic Ball:Si3N4,Zro2,Sic,AI203 High Quality Hybrid Ceramic Ball Bearings Features and specification of XBL bearingRing MaterialGCr15, GCr15SiMn, Bearing ... appliances, low noise and high speed electric motor automotive components, pumps, machinery. SalesAmy Matelephone number0086-15957493720Fax.0086-574-63046362 High Quality Hybrid Ceramic Ball Bearings