How to deal with common motor bearing failures?

Properly functioning bearings keep machinery and processes running efficiently, but these components are often overlooked, but when they fail, they can cause a lot of trouble.

Bearings are an important part of motors. They are responsible for handling loads, reducing friction, and providing stable support for shafts, improving the reliability and service life of rotating parts. However, it is worth noting that bearing failures account for up to 51% of all motor failures. According to data from the U.S. Department of Energy, this proportion may be even higher, reaching 67%.

This article will cover the main factors that lead to bearing failure and how to prevent premature bearing failure. By learning more about these potential problems and knowing how to prevent them, you can maximize the life of your bearings.


Importance of bearings to motors

Bearings play a vital role in maintaining motor efficiency and performance. Rolling bearings support and secure the rotor, maintain the air gap between the rotor and stator, and transfer loads from the shaft to the frame.

If a bearing is missing or degraded, it will result in reduced motor efficiency and increased friction and vibration. These negative effects are further exacerbated when a bearing fails, which increases system operating resistance and generates additional heat, thereby reducing motor operating efficiency.


Common causes of bearing failure

There are many factors that can cause motor bearing damage. Here are some of the most common causes of premature bearing failure:

1. Improper lubrication: Excessive grease in the bearing causes the bearing to churn the grease, which leads to increased energy loss and higher temperatures.

2. Corrosion and contamination: Dust, dirt and other contaminants invade the bearing, accelerating wear and affecting the smooth operation of the bearing.



3. Vibration and misalignment: Excessive vibration or misalignment of the motor will put additional pressure on the bearings, causing fatigue failure of the bearing components.

4. High temperature: If the heat generated during motor operation exceeds the tolerance of the lubricant, it will reduce the performance of the lubricant and cause thermal expansion, shortening the life of the bearing.


How to Prevent Bearing Failure

  1. Lubrication issues: Use the right type of lubricant and keep enough, which can reduce friction and wear, thereby extending bearing life.
  2. Pollution and corrosion control: Filter lubricants, keep the working environment clean, and use integral sealed bearings in harsh environments.
  3. Proper storage: Store bearings in a dry, clean environment to avoid contamination.

It should be noted that bearing failures can be caused by a variety of factors, and a combination of these factors may be involved. Regular maintenance, proper lubrication and monitoring can help prevent premature failure of motor bearings. If you often experience bearing wear, this may be a sign of a potential larger problem. Please contact us in time and we will provide professional help and solutions.


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