Vibration caused overall eccentric bearing failure

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Generally, the overall eccentric bearing Rolling itself does not produce noise. Usually feel "bearing noise" is in fact bearing directly or indirectly with the surrounding structures generate sound effects of vibration.rol ler bearing co
This is why many noise problems can be regarded as the vibration problem relates to the whole overall eccentric bearing applications. Due to loading the excitation generated by the number of rolling elements change when a radial load is loaded on a bearing, the number of rolling bodies of the bearing load in operation will slightly change, i.e. :2-3-2-3 ... This caused the offset of the load direction. The resulting vibration is unavoidable, but can be through an axial pre-load to reduce, and loaded on all the rolling bodies.
Member waviness in the case of the snug fit between the bearing ring and the bearing or shaft, the bearing ring may be fitted with the adjacent parts of the shape is deformed. If a deformation occurs, in operation, it may lead to vibration. Therefore, the bearing block and the drive shaft for machine processing to the required tolerances is very important.
Local damage, a small portion of the bearing raceways and rollin g elements may be damaged due to the operation or installation errors. In operation, the overall eccentric bearing member for rolling across the damaged will produce a particular frequency of vibration. Vibration frequency analysis can identify the damaged bearing member. The vibration behavior of the applications in many applications, the bearing stiffness and the stiffness of the structure around the same. Due to this feature, as long as the correct choice of the bearings (including the pre-load and clearance) in the application configuration, it is possible to reduce the vibration of the application.
First, the structural design is reasonable, while with advanced, will have a longer bearing life. Bearing manufacturing generally after forging, heat treatment, turning, grinding and assembly of multi-channel processing. Reasonable process, advanced, stability can also affect the life of the bearing. Which affect the quality of the finished overall eccentric bearing heat treatment and grinding process, tend to have a more direct relationship with the failure of the bearing. In recent years, the study showed that the affected layer of the bearing surface, the close relationship of the grinding process with the bearing surface quality.
Metallurgical quality of the bearing material once the main factors affecting the rolling bearing to early failure. With the advances in metallurgical technologies (such as bearing steel vacuum degassing), to improve the quality of the raw materials. The proportion of the raw material quality factors in bearing failure analysis has decreased significantly, but it is still one of the main factors bearing failure. The selection is still bearing failure analysis must consider the factors properly.grinding spindle