The installation process for small and medium-sized rolling bearings is generally cold-pressed or heated with a ferrule.
Based on actual installation results and the fit between the bearing inner ring and shaft, and the swivel bearing outer ring and bearing seat, the heated ferrule method does not affect the shaft bearing seat dimensions, while the cold-pressing method can cause varying degrees of wear on both. However, both assembly methods may affect the bearing seat dimensions of the equipment, especially misalignment during assembly, which can easily damage the assembly surfaces.
When equipment malfunctions or maintenance is required, the only way to disassemble a bearing is through the most direct method: forcible separation from the mating component. This separation, especially when using an interference fit, can cause significant friction between the mating surfaces, naturally leading to varying degrees of wear. This problem is common during equipment repairs.
To maintain the quality and performance of the equipment, necessary repairs are often required on the bearing seats. For bearing seat dimensions with minimal negative deviation, particularly on smaller shafts, brush plating or other methods can be used to restore the bearing seat dimensions. For larger shafts with significant negative deviations, welding is often used to add material and re-process the dimensions.
Whichever repair method is used, it is crucial to ensure that the shaft does not experience harmful deformation. During the subsequent dimensional repair process, the coaxiality requirements of the bearing seat and other dimensions must be maintained. For bearing seats that mate with the bearing outer ring, if the fit does not meet the required dimensions, necessary measures should be taken, either by partially repairing the component dimensions or replacing a component that meets the requirements.
For these reasons, bearing assembly and disassembly should be performed in a standardized manner, whether during equipment manufacturing, maintenance, or repair. Pre-assembly dimensional inspection is essential to ensure that the mechanical properties of the equipment bearing system meet the required standards.
