YRT bearings by a thrust / radial housing washer, a thrust / radial shaft washer, a thrust 
washer, two needle roller cage assemblies and a group of radial cylindrical roller composition.
Ring seat ring and the shaft has uniform installation screw holes. The bearings have high axial
 and radial load capacity. High tilt stiffness and high precision. Applicable to rotary table, 
chuck, and iron heads, and bearing measurement and experiment configuration. This type of bearing  

on the match with the requirements of the equipment parts and higher. Installation need to control  the installation of the

screw tightening torque