What are the causes of premature aging of bearings?

The causes of premature bearing aging can be summarized into many aspects. The following is a detailed analysis of some of the main reasons:

1. The fit is too tight: When the fit between the inner ring of the bearing and the shaft, and the outer ring and the seat hole is too tight, the operation of the bearing will become inflexible, resulting in increased friction, generating a large amount of heat, and increasing the temperature of the bearing, thus Accelerates aging.

2. Misalignment of installation: Incorrect bearing installation or poor alignment will lead to uneven load distribution on the bearings, with certain parts bearing excessive loads, exacerbating friction and causing premature aging of the bearings.

3. Strong vibration: When mechanical equipment undergoes strong vibration, the rolling elements and rings in rolling bearings will move relative to each other and collide with each other, leading to increased wear, fatigue spalling and gluing, and accelerated bearing aging.

4. Insufficient lubrication: Insufficient or inappropriate lubricant in rolling bearings cannot form an effective lubricating film, increasing bearing friction and wear, causing temperature to rise and accelerating bearing aging.

5. Material fatigue: During long-term operation, the rolling elements and rings are repeatedly stressed, leading to fatigue spalling and micro-crack expansion, and ultimately premature bearing aging.

6. Pollution and corrosion: The intrusion of pollutants and corrosives will cause chemical and electrochemical corrosion of bearing materials, reduce their strength and durability, and accelerate bearing aging.

7. Friction loss: Friction will cause bearing surface damage and friction and wear, as well as temperature increase. In short, friction loss will increase, leading to bearing aging.

8. Fatigue damage: During long-term operation of the bearing, bending and tensile forces will be generated due to back and forth rotation, causing fatigue of the internal metal parts, which will then cause fatigue damage and cause the bearing to fail.

9. Improper use and maintenance: Poor lubrication, equipment contamination and overloading, unreasonable transportation and assembly, undue collisions and impacts during disassembly, etc. are all important causes of premature aging of bearings.

In order to extend the service life of bearings, a series of measures need to be taken, including reasonable selection of fits, correct installation of bearings, ensuring the stability of mechanical equipment, maintaining good lubrication conditions, and strengthening bearing maintenance. In addition, you also need to pay attention to the cleaning and drying of the bearings, and replace the lubricating oil in time.