Causes of bearing aging in high-efficiency energy-saving multi-stage pumps

Category: Water pump knowledge

2025-07-26

The main causes of bearing aging in high-efficiency energy-saving multi-stage pumps include material fatigue and wear, poor lubrication, environmental factors, overload operation, and improper installation and maintenance. To extend the service life of the bearings, good lubrication should be maintained, working environmental factors should be controlled, overload operation should be avoided, and correct installation and maintenance should be ensured.

High-efficiency energy-saving multi-stage pumps are widely used in industrial fluid transportation equipment. The working condition of the bearings, one of its core components, is directly related to the pump's performance and lifespan. However, as the usage time increases, bearings inevitably age. The causes of bearing aging will be discussed below.

I. Material Fatigue and Wear

During high-speed rotation, the material is subjected to periodic stress, and long-term operation can lead to material fatigue, resulting in cracks and spalling. In addition, contact friction between the bearing and the shaft and seals causes wear, which is also one of the main causes of bearing aging.

II. Poor Lubrication

The lubrication condition of the bearing directly affects its service life. Insufficient lubrication or poor lubricant quality will increase friction, accelerating the wear and fatigue of the bearing material. Therefore, maintaining good bearing lubrication is key to preventing bearing aging.

III. Environmental Factors

Factors such as humidity, temperature, and corrosive gases in the working environment will affect the bearings. For example, humidity and corrosive gases can cause rust and corrosion of the bearings, thereby shortening their service life. High-temperature environments accelerate the aging of bearing grease, reducing lubrication effectiveness.

IV. Overload Operation

When the pump's workload exceeds the bearing's load capacity, it will cause the bearing to operate under overload, accelerating the aging process. Therefore, keeping the pump running under rated conditions is an important measure to prevent bearing aging.

V. Improper Installation and Maintenance

Improper bearing installation or untimely maintenance can also lead to aging. For example, if the installation does not follow the specified matching dimensions and technical requirements, it may lead to poor matching between the bearing and the shaft and seals. Long-term lack of maintenance or untimely maintenance can lead to bearing contamination and damage. Therefore, correct installation and maintenance are key to ensuring long-term stable operation of the bearings.

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