How to maintain sealed self-aligning roller bearings

The maintenance of sealed self-aligning roller bearings is an important step in ensuring their long-term stable operation and extending their service life. Here are some key maintenance methods and precautions:

1、 Daily maintenance

Monitor the operating status: Regularly check the rotational sound, vibration, temperature, and lubricant status of the bearings. Any abnormal sound, vibration, or temperature rise may be a sign of bearing problems.

Use professional detection tools (such as vibration sensors, thermometers, etc.) for monitoring to obtain more accurate data.

Lubrication management: For sealed self-aligning roller bearings, the filling amount of lubricating grease should be strictly controlled. Generally speaking, the filling amount of lubricating grease should not exceed about 50% of the internal space volume of the bearing to avoid excessive lubricating grease causing an increase in friction torque and high temperature rise.

Regularly check the quality and quantity of lubricating grease to ensure that it is in good condition, and add or replace it as needed.

Pay attention to selecting lubricating grease that is suitable for the conditions and requirements of bearing use, in order to improve lubrication effect and bearing performance.

Cleaning and maintenance: Regularly clean the bearings and their surrounding environment to prevent dust, impurities, etc. from entering the interior of the bearings.

When cleaning bearings, appropriate cleaning agents (such as gasoline, kerosene) should be used for rough and fine cleaning to ensure the cleanliness of the bearings.

After cleaning, rust proof oil or grease should be applied promptly to prevent the bearings from rusting.

2、 Regular inspection and maintenance

Appearance inspection: Check the appearance of the bearing for defects such as cracks, notches, fractures, and significant jamming.

Check the wear of the rolling elements, raceway surfaces, retainers, and other components of the bearing to ensure that they are in good condition.

Dimensional accuracy check: Use professional measuring tools to check the dimensional accuracy of bearings, including key parameters such as inner diameter, outer diameter, and clearance.

If a decrease in dimensional accuracy or abnormal wear is found, timely measures should be taken for repair or replacement.

Sealing inspection: Check whether the sealing device of the bearing is intact and ensure that there is no leakage.

If damage or leakage is found in the sealing device, new seals should be replaced in a timely manner.

3、 Professional maintenance and replacement

Professional maintenance: If there is a serious malfunction or damage to the bearing, it is necessary to hire professional personnel for repair.

During the maintenance process, it is necessary to strictly follow the maintenance manual and technical requirements of the bearing to ensure the quality of maintenance and bearing performance.

Replace with a new bearing: If the bearing is severely damaged or cannot be repaired, it should be replaced with a new sealed self-aligning roller bearing in a timely manner.

When replacing new bearings, choose products of the same model and specifications as the old bearings, and install them according to the correct installation method.

4、 Other precautions

Avoid overload use: During use, the bearing should not be subjected to forces exceeding its rated load to prevent damage or failure.

Pay attention to the usage environment: Bearings should be used in a dry, clean, and non corrosive gas environment to avoid adverse effects.

Regular training and guidance: Provide regular training and guidance to operation and maintenance personnel to improve their skills and awareness, ensuring the correct use and maintenance of bearings.

In summary, the maintenance of sealed self-aligning roller bearings needs to start from multiple aspects, including daily maintenance, regular inspection and repair, professional maintenance and replacement, etc. By taking effective maintenance measures and precautions, the long-term stable operation and extended service life of bearings can be ensured.