... F-88144 F-88143 F-28866 F-351644 F-53125.2 F-87592 F-C44 F-223449 F-10-2987 F-53272 F-53125 F-54293 F-217813.2 F-94474 F-52408 F-214617 F-87592 F-207624 F ... of ball bearing,roller bearing,pillow block bearing,joint bearing,needle roller bearing.3.The material is bearing steel(GCr15),however ...