The method of mounting and dismounting the bearing should be determined according to the structure, size, and nature of the bearing components. The pressure for installation and disassembly should be directly applied to the end face of the matching retaining ring, and the pressure cannot be transmitted through the rolling elements, because this will cause indentation on the working surface of the bearing, affect the normal operation of the bearing, and even damage the bearing. The bearing cage, sealing ring, dust cover and other parts are easily deformed, and the pressure for installing or disassembling the bearing cannot be added to these parts. (1) The inner ring of the bearing and the shaft drive wheel are tightly fitted, and the outer ring and the housing are loosely matched. The bearing can be press-fitted on the bearing by a press, and then the shaft and the bearing are installed in the casing. At the same time, a soft metal assembly sleeve (copper or soft steel pipe) is placed on the end face of the bearing. The inner diameter of the assembly sleeve of our company should be slightly larger than the journal diameter, and the outer diameter should be smaller than the rib diameter of the bearing inner diameter to avoid pressing on the cage. When installing the bearing, we must make the center line of the bearing hole and the shaft coincide. If the bearing is skewed relative to the shaft, it will not only be difficult to install, but will also cause indentation, bending of the journal and even break the inner ring of the bearing. In some places where the press is lacking or cannot be used, the bearing can be installed with an assembly sleeve and a small hammer. When the bearing is installed, the hammering force should be evenly transmitted to the entire circumference of the end face of the bearing ring, so the hammered end face of the assembly sleeve should be made into a spherical shape. (2) The outer ring of the bearing and the housing hole are tightly fitted, and the inner ring and the shaft are loosely matched. The bearing can be pressed into the housing first. At this time, the outer diameter of the assembly sleeve should be slightly smaller than the diameter of the housing hole. (3) The inner ring of the bearing and the shaft drive wheel, the outer ring and the housing hole are all tightly fitted. At present, the end face of the assembly sleeve should be made into a ring that can simultaneously compress the end face of the inner and outer ring of the bearing, or use a disc and assembly Pipe, so that the pressure is transmitted to the inner and outer rings at the same time, and the bearing is pressed into the shaft and the housing. At present, this installation method is particularly suitable for the installation of self-aligning radial spherical bearings.