Bearing mounting and dismounting device

The invention relates to a bearing mounting and dismounting device which comprises a hydraulic supply device, a push device and a mounting and dismounting device, wherein the push device comprises a first barrel, a piston guide rod arranged in the first barrel and a piston sleeve sleeving the piston guide rod and capable of moving along the piston guide rod; the mounting and dismounting device comprises a fixed pillar, a thrust disc and a gripper jaw; the fixed pillar is arranged at the lower end of the piston guide rod; the thrust disc is arranged at the lower end of the piston sleeve; a through hole for accepting the piston guide rod is formed in the center of the thrust disc; thrust pillars are uniformly distributed on the lower surface of the thrust disc; and the gripper jaw is arranged at the lower part of the piston sleeve. According to the bearing mounting and dismounting device, the thrust disc is adopted to mount the bearing, the gripper jaw is adopted to dismount the bearing, functions of mounting a