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 steelCagesteel cageQuality standardISO9001:2000PrecisionP0, P3,P4,P6,P5ClearanceC0,CM,C2, C3, C4Vibration & NoisyZ1,Z2,Z3 V1,V2,V3,V4Delivery dateDepend On Your QuantityPayment Term 130% T/T in advance ...