... production of KAYDON,INA,NTN thin section bearing.General description:We are expert at precision ... to meet customers' requirements.structuredeep groove ball bearing, angular contact ball bearing, four point contact ball bearingApplication:aviation , astronomical instruments, glass ... equipment,robot, semiconductor manufacturing equipment etc.print machineryFour-point Contact Series(XA,XB,XC,XD,XF,XG)Type( ...