Does the working environment of ball bearings need to be kept clean?

The working environment of ball bearings indeed requires cleanliness. This requirement is based on multiple considerations:
Firstly, the accuracy and performance of ball bearings are highly sensitive to impurities in their working environment. The surface roughness of ball bearings is extremely low. For example, the surface roughness accuracy of imported bearing rings and rolling elements can reach 1/10 μ m. If the smooth ball surface is contaminated, it will seriously affect its performance. The size of dust particles in the external environment can reach up to 10 μ m, much larger than the lubricating layer between the rolling surfaces inside the bearing (usually 0.2~1 μ m). If these particles enter the bearing, they will be excessively crushed by the rolling elements, generating local pressure, which may ultimately cause to permanent material fatigue and damage.
Secondly, maintaining a clean working environment is crucial for extending the service life of bearings. The lubricating layer in bearings is crucial for reducing friction and wear, and pollutants can damage this layer, increasing friction and wear, thereby shortening the service life of bearings. In addition, pollutants may also cause bearings to overheat, further exacerbating wear and damage.
To maintain a clean working environment for ball bearings, the following measures can be taken:
Before and during the installation and use of bearings, ensure that the working environment is clean and dust-free. Dust covers and other devices can be used to prevent impurities such as dust and powder from entering the interior of the bearing.
Regularly clean and maintain the bearings, remove old oil and impurities from the bearings, and add new pure lubricating oil. Appropriate cleaning agents such as gasoline or kerosene should be used during cleaning, and the bearings should be ensured not to be damaged during the cleaning process.
Monitor the operation status of bearings, regularly check the rotation sound, vibration, temperature, and lubricant status of bearings, and promptly detect and handle abnormal situations.
In summary, the working environment of ball bearings needs to be kept clean to ensure the accuracy, performance, and lifespan of the bearings.