Do You Know The Application, Selection, And Installation of Precision XRU Crossed Roller Bearings?

XRU crossed roller bearings feature a circular design with inner and outer rings. Since mounting holes are machined into both the inner and outer rings, they eliminate the need for mounting flanges and brackets, shortening axial spacing and optimizing the operating mechanism. Furthermore, the integrated design of the guide housing and inner and outer rings minimizes the impact of installation on performance, ensuring stable rotational accuracy and torque. Rotating mechanisms, outer and inner rings are widely used in robotic waist joints, welding multi-station turntables, communications, radar, and precision measuring instruments.

 

There are several key points when selecting a crossed roller bearing: first, determining the operating conditions; second, selecting the type; third, determining the rotational torque; and fourth, lubrication. Once the appropriate crossed roller bearing is selected, installation is required. Detailed installation steps are as follows.

First, inspect the pre-installed components. Thoroughly clean the brackets and other mounting components to check for burrs or edges. The second step is to insert the crossed roller bearing into the bracket or shaft. Since crossed roller bearings are thin-walled bearings, they are prone to tilting during insertion. To prevent this, keep the bearing level during installation. Use a plastic hammer to tap evenly, gradually inserting it through the roller bearing insert or shaft bracket until you hear the sound and it is completely aligned with the reference.


 

The third step is to install the fixing flange. First, place the fixing flange on the crossed roller bearing and move it several times to align the bolt holes. Then, insert the fixing bolts into the holes and turn them by hand, ensuring that there are no difficult-to-tighten bolts when the bolts are extended. Finally, tighten the fixing bolts. Tighten them in three or four stages, from partially tightened to fully tightened. Repeat the tightening in a diagonal sequence. When tightening, separate the inner and outer rings into sections and rotate them slightly to correct any misalignment between the inner and outer rings and the main body.

Hot-selling THK cross roller bearings Model