Bearing pressing withdrawing machine

The invention discloses a bearing pressing withdrawing machine, which comprises an overall gantry type framework, a left main combined oil cylinder, a right main combined oil cylinder, a guide device, a wheel pair lifting device, a locking device, a push wheel device, a bearing support, a bearing rotating device, a hydraulic system and a measurement and electrical control system, wherein a left main pressing combined oil cylinder and a right main pressing combined oil cylinder are arranged in a left bracket and a right bracket of the gantry type framework in an axial symmetry manner. The bearing pressing withdrawing machine is characterized in that a withdrawing pull claw device is arranged at the front ends of large piston rods of the left main combined oil cylinder and the right main combined oil cylinder and consists of a hydraulic motor, a pull plate and a pull block; the hydraulic motor is arranged below the pull plate; and the pull block is arranged on the pull plate. The bearing pressing withdrawing machine has complete functions, is dual-purpose, has pressing and withdrawing functions, is wide in applicability range and is high in adaptability to pressing and withdrawing of various types of wheel pair bearings and high flexibility in single-head independent working or double-head synchronous working; manufacturing and production cost is reduced; an area occupied by a workshop is reduced; labor is reduced; and efficiency is improved.