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Causes and Solutions of Rolling Bearing's Limit Speed Damage


In general, with the correct use of rolling bearings, fatigue life can be achieved. But in the event of accidental early damage, it can no longer be used. Unlike fatigue life, this early damage is called a failure or accident. Most of them are caused by poor consideration of installation, use, and lubrication, foreign matter intruding from the outside, or insufficient research on shafts and bearing housings.


The damage state of the rolling bearing, such as the abrasion of the ring rib of the roller bearing, may be caused by insufficient lubricant, inappropriate grade, defective oil supply and discharge structure, foreign matter intrusion, bearing installation error or excessive deflection of the shaft. It may also be caused by a combination of the above reasons. Therefore, it is difficult to know the real cause of the damage only by investigating the bearing damage. However, on the basis of fully understanding the machine, working conditions and peripheral structure of the bearing, clarifying the situation before and after the failure, and then analyzing the damage of the bearing and various related reasons, it is possible to prevent the recurrence of similar failures.


Even the rolling bearing parts are machined using modern manufacturing techniques. See how its readings change with preload. The preload method has its disadvantages. As we all know, there will always be an appropriate part of the dial indicator against the end face of the bearing or the shaft on its working surface.


1. Bearing structure and service conditions


Different structures are suitable for different service conditions; different structures of automobile bearing parts have different processing techniques, which also affects their quality. Therefore, we should develop new structural products to adapt to different service conditions, and can indicate its suitable service conditions or performance on the rolling bearing instructions to facilitate customers' choice.


2. Strengthen the research on rolling bearing technology


Improve the processing technology, improve the processing quality, and reduce the possibility of defects in processing


For example, in heat treatment, for the inner and outer rings of larger varieties, try to use the middle and lower limit quenching heating temperature to adapt to prolong the holding time to increase the alloy concentration and increase the fracture strength of martensite, and select a higher temperature under the premise of ensuring quality. Fire temperature to enhance the impact toughness of the workpiece.


3. Improve the monitoring method of rolling bearing processing and promote the improvement of processing quality


Such as improving the monitoring of the curvature position of the flow channel, improving the overall performance of the automobile bearing after assembly, and improving the working condition of the rolling bearing.