Bearing cage failure: causes and prevention strategies

Release time:2025-05-15News type:Bearing knowledge

The main factors of bearing cage failure involve insufficient lubrication, installation errors, foreign body intrusion, load exceeding the rated value, torque overload, excessive or unstable operating speed, poor lubrication conditions, external impurity contamination, strong vibration in the working environment, improper installation and operation, and abnormally high temperatures.

To fully understand and solve the bearing cage failure problem, need to start from multiple perspectives. First of all, lubrication is the key to maintain the normal operation of bearings. Proper lubrication not only extends bearing life, but also reduces noise. Without proper lubrication, the inside of the cage may dry out and increase wear. In addition, incorrect operation during mounting is equally important; for example, improper mounting can lead to problems such as damage to the cage. When hard objects or impurities enter the bearing, they increase the friction between the cage and the outer ring, which in turn may cause damage to the bearing structure. Loads that exceed the carrying capacity (such as excessive preload or high temperatures) can also increase the rotational resistance of the cage, intensifying wear and ultimately leading to its fracture. In addition, severe vibration in the working environment, incorrect installation methods or steps, bearing temperature abnormally high are important factors leading to cage fracture. In order to effectively prevent the occurrence of these problems, should be based on the actual working conditions to choose the right type of bearing, regular inspection of lubrication, and the use of appropriate lubrication and lubricants; at the same time, a reasonable choice of cage materials and types, and pay attention to the specific details of the bearing installation and the use of standards.

In the surface treatment, through the laser, electron beam or induction quenching and other ways of not fully quenched high-speed steel parts for local heat treatment, the formation of hardened layer; can also be used in chemical heat treatment methods, such as carbon or nitrogen infiltration to slightly adjust the carbon content of the material, which enhances the surface hardness and compressive stress, thereby improving fatigue resistance and slowing down the rate of expansion of cracks.

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