First, the structure designed at the same time possesses advanced, will have a longer life of FAG bearings. Bearings are generally made through forging, heat treatment, turning, grinding and assembly of multi-channel processing operations. The reasonableness of the processing technology, advanced, will also affect the stability of the bearing life. Which affect the quality of the finished product bearing the heat treatment and grinding processes, often associated with the failure of FAG bearings have a more direct relationship. In recent years, deterioration of the bearing surface layer of studies have shown that the grinding process and the quality of FAG bearings close to the surface.
Second, FAG bearing materials imported metallurgical quality of early bearing failure was the main influence factors. With metallurgical technologies (such as bearing steel, vacuum degassing, etc.) of progress, raw material quality is improved. Raw material quality factors in the failure analysis of FAG bearings proportion has decreased significantly, but it is still bearing the bearing failure of one of the main factors.
Third, the appropriateness of the selection is still FAG Bearing failure analysis must be considered. FAG Bearing failure analysis of the main task, is based on a lot of background material, analysis of data and failure mode, identify the main factors causing bearing failure, in order to make targeted improvements to extend bearing service period, to avoid the occurrence of sudden bearing onset of early failure. Installation conditions are the primary factors used one of the factors bearing is often caused by improper installation package for FAG bearings between the various components of the stress state changes, FAG bearings in the abnormal state of operation and early failure.
Detection, first FAG Bearing cover open, choose the appropriate wire diameter, is cut into 15 to 40 mm long pieces, placed in the journal at the interface and the upper and lower bearings, bearing cap cover, according to the specified torque Tighten the mounting bolts, then loosen the bolts, remove the bearing cap, with a micrometer thickness detection crushed wire, find the average of the bearing tip clearance.
If headspace is too small, in the upper and lower tile surface with padded. If too large, then cut mat, scraping tile or re-poured.
Bearing clamping force adjustment: In order to prevent the bearing may occur in the course of the rotation and axial movement, in addition to interference with moving parts and only, the bearing must also be used to compress FAG Bearing cap, measuring methods and measuring headspace method, measure the thickness of soft lead wire, the clamping force can be used to calculate the bearing (with the bearing elastic deformation after compression expressed as)
General bearing compression force of 0.02 to 0.04 mm. If the clamping force does not meet the criteria, can increase or decrease in imports of FAG bearings and bearing joints at ways to adjust the thickness of the gasket, tile padded back not allowed.