What to do if the bearing makes abnormal noise? 3-minute quick diagnosis!

As an indispensable component of mechanical equipment, the operating state of the bearing directly affects the performance and life of the equipment. When the bearing makes abnormal noise, it often indicates potential problems. This article will provide you with a set of methods to quickly diagnose abnormal noise in the bearing, helping you to find the problem in time and take the correct solution.

1. Common causes of abnormal noise in bearings

1.1 Insufficient lubrication

Insufficient lubrication is one of the most common causes of abnormal noise in bearings. When the bearing lacks sufficient lubricating grease, the friction between metal parts will increase, producing harsh noise. This situation is usually accompanied by an increase in bearing temperature.

1.2 Bearing wear

Long-term use or overload operation will cause wear of bearing raceways, rolling elements and other parts. Worn bearings will produce irregular noise during operation, which is usually dull and will intensify with the extension of use time.

1.3 Improper installation

If there is deviation, improper preload or inappropriate fit clearance during bearing installation, it will cause abnormal noise in the bearing during operation. This abnormal noise usually manifests as periodic noise and changes with the change of speed.

2. Quick diagnostic method

2.1 Auscultation method

Use a stethoscope or screwdriver to get close to the bearing and listen carefully to the sound of the bearing when it is running. The normal sound of the bearing should be uniform and smooth, while the abnormal sound is sharp, dull or irregular.

2.2 Palpation method

When the equipment is stopped, gently turn the outer ring of the bearing by hand to feel whether the bearing rotates smoothly. If you feel obvious jamming, resistance or abnormal vibration, it means that the bearing may be faulty.

2.3 Observation method

Check whether there are obvious signs of wear, rust or deformation on the appearance of the bearing. At the same time, observe the state of the lubricating grease. If the grease changes color, becomes thinner or contains metal particles, it means that the bearing may be damaged.

3. Professional solution

3.1 Lubrication maintenance

For abnormal sounds caused by insufficient lubrication, the lubricating grease should be replenished or replaced in time. Select the appropriate lubricating grease model and perform lubrication operations according to the requirements of the equipment manual. Regular lubrication is an effective measure to prevent bearing failures.

3.2 Bearing Replacement

When the bearing is severely worn or damaged, it should be replaced with a new one in time. When replacing, pay attention to choosing products with the same specifications as the original bearing, and strictly follow the installation specifications to ensure that the bearing is installed in place.

3.3 Professional Maintenance

For complex bearing failures or problems that cannot be solved by yourself, it is recommended to contact a professional maintenance service. Professional maintenance personnel can accurately diagnose the problem and provide the most appropriate solution to ensure that the equipment returns to normal operation.

Through the above methods, you can quickly diagnose the cause of the abnormal noise of the bearing and take appropriate solutions. Regular inspection and maintenance of bearings can effectively extend the service life of the equipment and reduce maintenance costs. If you encounter any problems during diagnosis or maintenance, please feel free to contact our professional team and we will provide you with the best service.