Supporting bearing suitable for large hollow shaft system

The invention discloses a support bearing suitable for a large hollow shafting, the support bearing comprises an outer ring, an inner ring, a steel ball and a support, the outer ring is of a split structure, the outer ring comprises an upper semicircular outer ring and a lower semicircular outer ring, the upper semicircular outer ring and the lower semicircular outer ring are fixedly connected through a detachable screw to form the outer ring, and the outer ring is provided with a through hole. And the steel balls are mounted in a loop formed by the upper semicircular outer ring, the lower semicircular outer ring, the inner ring and the protective bracket. The double-row thrust angular contact ball bearing has the characteristics of high strength and low friction torque while keeping that a conventional double-row thrust angular contact ball bearing can bear radial load, bidirectional axial load and upsetting moment, the size of the bearing can be reduced when the double-row thrust angular contact ball bearin