Annular belt conveyor roller

The utility model provides an annular belt conveyor roller. The annular belt conveyor roller is composed of a large-play radial ball bearing, a bearing seat, a sealing cover, a roller shaft, roller leather and a spring collar for shafts, wherein the large-play radial ball bearing, the bearing seat, the sealing cover and the roller shaft are arranged inside the roller leather, the large-play radial ball bearing is connected to the bearing seat, the large-play radial ball bearing and the bearing seat are arranged at the two ends of the roller shaft in a sleeved mode, and the sealing cover and the spring collar for the shafts are arranged at the two ends of the roller shaft. The annular belt conveyor roller is processed to be tapered, and therefore the characteristic of the same angular speed and different linear speeds on the same radius is achieved, the service life of a belt is guaranteed, and the optimum function is achieved. In addition, the sealing structure is adopted, and therefore the annular belt conve