... five sealed series,Inner hole diameter ranges from 1 to 40 inches,cross-sectional dimension is from 0.1875X0 ... we are able to meet customers' requirements.structuredeep groove ball bearing, angular contact ball bearing, four point contact ball bearingApplication: ... welding equipment,robot, semiconductor manufacturing equipment etc.print machineryFour-point Contact Series(XA,XB,XC,XD,XF,XG)Type(inch ...