... market.High Carbon Chrome Steel Ball For Bearing1)Material Comparison List CHINAUSAJAPANGERMANYFRANCEENGLANDITALYGBAISIJISDINBSBSUNIGCr1552100SUJ-2100Cr6100C5Si35534A99SKF32)Products information NAMEHigh carbon ... steel ballSIZE19.05mm-250mmMaterialsGCr15HardnessHRC58--66ApplicationAuto industry , Wind Power , Slewing bearing , Tower crane,Marine Machinery, Aerospace Industry , Military industry, ...