The CRBS20013AUU crossed roller bearing produced by MONTON adopts a thin-walled structure with an integrated outer and inner ring (with a height of only 13mm) design. The internal rollers are arranged at 90° in a cross pattern, and synchronous movement is achieved through a precise cage. This design endows it with the characteristics of multi-directional load-bearing capacity, high rigidity and high precision. It is applicable to the 2nd to 4th axes of 6-axis industrial robots, replacing the traditional combination of "bearings + harmonic reducers" to reduce transmission clearance.