Agricultural vehicle hub bearing with good rolling performance

The utility model discloses an agricultural vehicle hub bearing with good rolling performance, which belongs to the field of hub bearings and comprises a bearing outer ring, and a covering device is fixedly mounted on the outer surface of the bearing outer ring. According to the agricultural vehicle hub bearing with the good rolling performance, the assembly circular ring and the antifouling cover plate cover the connecting part of the bearing inner ring and the agricultural vehicle axle, a certain sealing effect can be achieved in cooperation with the waterproof gasket, the trouble that sludge adheres to the connecting part of the bearing inner ring is reduced, and the service life of the agricultural vehicle hub bearing is prolonged. Therefore, the risk that impurities enter the bearing outer ring and the bearing inner ring through gaps is reduced, the rolling performance of the bearing in use is guaranteed, sufficient lubricating oil can be injected into the oil injection port of the oil injection nozzle d