PRS Crossed roller bearing have five series,Cylindrical crossed roller bearing(CRA,CRB,CRE,CSX) and Tapered crossed roller bearing(CXR series),of which have two kinds of structure.One is dividing in inner ring,and the other is divinding in outer ring.A set of crossed roller bearing can support radial load, axial load and loading moment from all directions. It can be used in, such as, the arthritis or the rotary location of the industry robots, rotary working table of the machine work center, revolution location of machine hand , accurate rotary working table , medical machinery , dispensing mechanism , and IC manufacturing installation.