Electric submersible pump motor bearing

The utility model relates to the technical field of bearings, and discloses an electric submersible pump motor bearing which comprises an inner ring, a dismounting ring arranged on the outer wall of the inner ring, a sealing ring arranged between the outer wall of the inner ring and the inner wall of the dismounting ring, the outer wall of the dismounting ring and the inner wall of the outer ring are installed in a matched mode, and balls are arranged between the inner wall of the inner ring and the inner wall of the dismounting ring. A retainer is installed on the outer walls of the balls in a matched mode, limiting blocks are fixedly connected to the outer walls of the disassembling rings, limiting holes are formed in the outer walls of one sides of the limiting blocks, rolling grooves are formed in the inner walls of the disassembling rings, and limiting grooves are formed in the inner wall of the outer ring. By rotating the knob, the rotating rod drives the gear to rotate, so that the inner teeth drive th