Reasons and countermeasures for the damage of the limit speed of the roller bearing

Generally speaking, the correct use of roller bearings can achieve fatigue life. However, if accidental early damage occurs, it can no longer be used. Unlike fatigue life, this early damage is called a failure or accident. It is mostly caused by inadequate consideration of installation, use, and lubrication, foreign matter intruding from the outside, or insufficient research on shafts and bearing seats.

The damage state of the roller bearing, such as the abrasion of the ring rib of the roller bearing, may be caused by insufficient lubricant, improper grade, defective oil supply and discharge structure, foreign matter intrusion, bearing installation error or excessive shaft deflection , It may also be caused by the above-mentioned various reasons.

Therefore, it is difficult to know the true cause of the damage only by investigating bearing damage. However, based on a full understanding of the machinery, operating conditions and peripheral structure of the bearing, the situation before and after the occurrence of the failure is clarified, and the damage of the bearing and a variety of related causes are analyzed to prevent similar failures from happening again. Representative causes and countermeasures of bearing damage.

Even the most advanced manufacturing technology is used to process rolling bearing parts. Observe the way its reading changes with the preload load. The preloading method has its downsides, as we all know. The working appearance will always keep the dial indicator head against the bearing end face or the appropriate part of the shaft.

1. Bearing structure and service conditions. Different structures are suitable for different service conditions; the processing technology of different automobile bearing parts structure is different, which affects its quality. Therefore, we should develop new structural products to adapt to different service conditions, and the suitable service conditions or performance can be indicated on the rolling bearing operating instructions to facilitate the customer's choice.

2. Strengthen process research, improve processing technology, improve processing quality, and reduce the possibility of defects in processing. For heat treatment, for larger varieties of inner and outer rings, try to use the middle and lower quenching heating temperature to adapt to prolong the holding time to increase the alloy concentration and the martensite fracture strength, and select a higher return under the premise of ensuring quality. Fire temperature to enhance the impact toughness of the workpiece.

3. Improve processing monitoring methods 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.