What are the causes of bearing noise? (37 years of professional summary of angular contact bearing manufacturers)

If the angular contact bearing manufacturer does not pay attention during assembly, some small impurity particles may enter, and these impurities will be mixed into the grease of the bearing, causing friction during the operation of the bearing, resulting in noise, so high-end bearing production The manufacturer will complete the assembly process in a dust-free workshop; the second reason that may be overlooked is that the lubricating grease of the bearing is insufficient. If the grease is insufficient, the bearing will have a certain cavity, resulting in local oil-free friction, resulting in a comparison Therefore, angular contact bearing manufacturers must strictly control the amount of grease injected into the bearing during the grease injection process, and prevent grease leakage during the storage process. The third reason is that the bearing is installed incorrectly. Many machine tool manufacturers do not master the scientific installation method when installing the bearing. When installing the bearing, they directly hit the bearing with a hammer, which causes the surface of the bearing to be damaged, so that the bearing is in operation. Abnormal vibration and noise are generated during the angular contact bearing, so our angular contact bearing manufacturers suggest that scientific installation methods such as sleeve method, heating method, and hydraulic method can be used; the fourth reason is that the bearing clearance is too small. If it is too small, it will increase the frictional force generated by the rolling elements during rotation, so that the bearing is more likely to heat up during use; the fifth reason is that the raceway is damaged, and the processing of the raceway of the angular contact bearing is the focus of processing. In the process, if the raceway is damaged, it will cause abnormal heat generation, make noise, and seriously cause early failure of the bearing. Professional angular contact bearing manufacturers will use a microscope to inspect to ensure that the raceway of each set of bearings is smooth and harmless; The sixth reason is the problem of the bearing sealing ring. If the quality of the bearing sealing ring of the angular contact bearing is not good enough, or the installation is not in place, it will interfere with the normal operation of the bearing, resulting in a certain amount of noise and sometimes grease leakage. , in severe cases, it will cause early bearing failure. The seventh reason is the cage. If the cage of the angular contact bearing has poor accuracy or is damaged, it is easy to cause abnormal noise during operation. Therefore, the angular contact bearing manufacturers will strictly control the quality of the cage before assembly. , in addition to checking each dimension, it will also carefully observe whether the appearance is smooth. The torque is accurate, in order to turn stable!