Crossed roller bearing is a special type of bearing with inner ring split and outer ring rotating. Because the divided inner ring or outer ring is fixed together with the cross roller collar after the roller and interval retainer are installed, so as to prevent separation, the operation is simple when installing the cross roller collar. Due to the cross arrangement of rollers, only one set of cross roller collar can bear the load in all directions. Compared with the traditional model, the rigidity is increased by 3 ~ 4 times. At the same time, because the inner ring or outer ring of the crossed roller bearing is divided into two parts, the bearing clearance can be adjusted, even if the preload is applied, the high-precision rotation motion can be obtained. Moreover, because of its special structure, it is commonly used as spherical plain bearing in industrial robots.
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