The invention relates to a bearing installation machine and belongs to the technical field of mechanical tools. The bearing installation machine comprises a sliding groove seat, a supporting seat, a fixing plate, a triangular rack, a baffle, a supporting stand, a lifting table, a hydraulic sliding block, an abutting block, a lead screw, an electric nut post and a bearing. According to the size of the bearing and the distance between the center of a bearing hole of the bearing and the bottom face, the height of the lifting table is accurately adjusted through a laser ranging device and the electric nut post firstly. According to the bearing installation machine, the overall structure is simple, the center position of the bearing can be well located through an arc-shaped abutting head of the abutting block and the laser ranging device, the bearing can be stably placed on a bearing seat through the bearing abutting head, and the installation precision is guaranteed; a lifting device is suitable for bearing seats of various sizes, and adjustment is accurate and convenient; and the whole structure is convenient to assemble and disassemble and easy to manufacture.