If the machining error of the spindle itself meets the requirements, the rotation accuracy of the reducer spindle is generally determined by the bearing. The key to adjust the spindle rotation accuracy is to adjust the bearing clearance.
Maintaining a proper bearing clearance is critical to the performance of spindle components and bearing life. For rolling bearings, when there is a large clearance, it will not only concentrate the load on the rolling body in the force direction, but also produce serious stress concentration at the contact of the inner and outer race raceways of the bearing, shorten the bearing life, drift the centerline of the main shaft, and easily cause the vibration of the main shaft components.
Therefore, the adjustment of the rolling bearing must be preloaded to produce a certain amount of interference inside the bearing, so as to produce a certain elastic deformation at the contact between the rolling element and the inner and outer race raceways, thus improving the stiffness of the bearing.
WPA100,WPA120,WPA135,WPA147,WPA155
