Adjusting roller bearings in the Inner Ring Road Roller two and spherical roller for the Outer Ring Road between assembling a drum-shaped roller bearings. Outer Ring Road Roller Center and the curvature of the center bearing the same, so have the automatic ball bearing the same tune. Cardiac function. In axis, a deflection shell, can be automatically adjusted, not to increase the burden bearing. Adjusting roller bearings can bear the load and two radial direction of the axial load. The radial load capacity, applicable to heavy-duty, impact load conditions. Cone is the inner diameter of the bearing hole can be directly installed. Or will use tight sets, demolition cylindrical tube installed in the shaft. Cage use Cage plate stamping, forming polyamide Cage and copper alloy car system Cage