Bearing body of centrifugal pump

A bearing body of a centrifugal pump relates to bearing bodies; the bearing body is provided with a bearing body part; a roller bearing is arranged at the back end of the bearing part; a bearing box is arranged at the front end of the bearing body part; a fastening bolt and an adjusting bolt are arranged between the periphery of the bearing and the bearing body part; an adjusting nut is arranged on the adjusting bolt; an angular contact ball bearing is arranged in the bearing box; a pump shaft is arranged in the angular contact ball bearing and the roller bearing; when an impeller is abraded, the axial place of a rotor can be adjusted by using the fastening bolt and the adjusting bolt, the impeller is driven to axially move, so that a clearance between the impeller and a front cove plate does not change, the efficiency is invariable, the frequency of impeller replacement is low, and the using cost is low.