High quality single row angular contact ball bearings 7001 for Forging machine tool材质MaterialChrome Steel型号Model7001品牌 BrandJRDB振动等级 Vibration levelV1, V2, V3等级ClearanceC2, ... C3,C4证书CertificateISO9001:2000尺寸Size12*28*8mm用途ApplicationForging machine tool服务ServicesOEM customized servicesPrecision RatingP0, P6,P5,P4 P2包装Packaging ...