Crossed roller bearing

A crossed roller bearing comprises an inner ring and an outer ring, a roller and an isolation block are arranged between two raceways of the outer ring and the inner ring, a wedge-shaped plug hole is formed in the end face of one side of the inner ring, the size of the plug hole away from the inner ring is smaller than the size of the plug hole close to the outer ring, an inclined face is arranged at the bottom of the plug hole, and the inclined face is matched with the inner ring and the outer ring. The high end of the inclined face is arranged on the inner side of the inner ring, the bottom end of the inclined face is arranged on the outer side of the inner ring, a plug matched with the plug hole is arranged in the plug hole, and the plug is fixed on the inner ring through a headless screw. The plug is pushed from the outer diameter to the inner diameter and is naturally folded with the original cutting surface, the cutting seam of the plug and the plug hole after linear cutting is filled, the plug is natur