Bearing cage failure analysis: causes and prevention strategies
Published on:
2025-07-11 20:02
To fully understand and solve the problem of bearing cage failure, it is necessary to start from multiple angles.
The main factors causing bearing cage failures include insufficient lubrication, installation errors, foreign matter intrusion, load exceeding the rated value, torque overload, high or unstable operating speed, poor lubrication conditions, contamination by external impurities, strong vibration in the working environment, improper installation operations, and abnormally high temperatures.
To fully understand and solve the problem of bearing cage failure, it is necessary to start from multiple angles. First of all, lubrication is the key to maintaining the normal operation of the bearing. Reasonable lubrication can not only extend the life of the bearing, but also reduce noise. Without proper lubrication, the inside of the cage may dry out, increasing wear. In addition, incorrect operations during installation are equally important, such as improper installation, which can lead to problems such as cage damage. When hard objects or impurities enter the bearing, the friction between the cage and the outer ring will increase, which may cause damage to the bearing structure. Loads that exceed the bearing capacity (such as excessive preload or high temperature) will also increase the rotational resistance of the cage, intensify wear, and eventually cause it to break.
In addition, severe vibration in the working environment, incorrect installation methods or steps, and abnormal increase in bearing temperature are all important factors that lead to cage fracture. In order to effectively prevent the occurrence of these problems, the appropriate bearing model should be selected according to the actual working conditions, the lubrication condition should be checked regularly, and appropriate lubrication methods and lubricants should be used; at the same time, the cage material and type should be reasonably selected, and attention should be paid to the specific details and usage standards of the bearing installation.
In terms of surface treatment, the inadequately quenched high-speed steel parts can be locally heat treated by laser, electron beam or induction quenching to form a hardened layer. Chemical heat treatment methods, such as carbon or nitrogen infiltration, can also be used to slightly adjust the carbon content of the material to increase surface hardness and generate compressive stress, thereby improving fatigue resistance and slowing crack growth.
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