YRT bearing consist of a thrust/radial housing washer, a thrust/radial shaft washer, a thrust washer, two Axial needle roller and cage assemblies and a group of radial cylindrical roller . Housing washer and shaft washer have bolt hole for install equally spacer. This kind of bearings have high axial load and radial load , and high tilting rigidity and high precision. This bearing can be used to the machine tool or other high precision machinery of the rotary table or sub-set, and also can be used for chuck, measuring instruments and test equipment , and rotary table configuration. This bearing request higher quality of the parts match lt. You must control screw tightening torque when install it.