This is copper or aluminum or plastice based material, on which
therollers are arranged oderly in certain angle and intervals.
Moreover, the retaining technique is improved that dropping of the
rollers can be thoroughly preventedThe friction is low abdcan move
freely both in axial directions, and the bearingis in high
precision. This is a oung generation of the roller berinf
which can roll in high speed, and is used in rolling frane of cold
impact moulds, high precision machine tools and their accessories
