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Why is there abnormal noise during the use of the slewing bearing?

06-08, 2022 / in News / by PRS

The slewing bearing is a component that needs to be used in many mechanical equipment. It is a large bearing that can withstand comprehensive loads. In addition, it can withstand large axial and radial loads and overturning moments at the same time. It is also more common. In the case of common use, the fault problem is more obvious, such as fracture or abnormal noise during use. The following slewing bearing manufacturers mainly talk to you about why slewing bearings appear abnormal sound.

When this kind of abnormal noise occurs, it should be clear first that when the slewing bearing is idling just after leaving the factory, there will be a uniform sound of steel ball rolling, which is a normal sound; It usually disappears after a period of rotation and running-in. What we are talking about today is a relatively loud and special noise. When you hear a special noise, you need to pay attention. So what is this abnormal noise? Learn more below!

1. Uneven bolts on the mounting surface are loose

When abnormal noise occurs, it needs to be due to the problem of installation operation. When the unevenness of the installation surface does not meet the requirements, it will cause the raceway to form a negative clearance, resulting in abnormal noise; in addition, when the pinion is poorly meshed, Abnormal noises may also occur, which may also cause broken teeth; in addition, when the mounting bolts are loose, the slewing bearing will be elastically deformed, and a negative gap will be generated at the deformed position. It is necessary to check immediately and tighten the bolts as required.

2. There is a foreign body in the slewing bearing

When there are foreign objects such as sand particles and iron filings inside the slewing bearing, non-periodic vibration will occur, and at the same time, there will be a failure of inflexible rotation. When this happens, it is necessary to strictly clean the bearings, shafts, seat holes and matching parts before installation, and remove foreign objects in the lubricant in time; remember to avoid using plastic cages with impure materials or embedded foreign objects. This will remove the corresponding abnormal noise.

3. Abnormal noise caused by grease problem

The slewing bearing is lubricated with grease, and the abnormal noise is likely to be caused by the lubrication problem. Common reasons are lack of grease in the raceway, uneven grease filling, poor quality and aging of grease, and wrong selection of lubricants. To solve this problem, just use the appropriate lubricant, fill it in time, and replace it in time.

4. Abnormal noise caused by damaged sealing strip

Check whether the sealing strip is worn, because the structure of the sealing strip of the slewing bearing plays a key role in the sealing performance. When the sealing strip and the slewing bearing cannot be fully fitted, it is easy to cause grease leakage. In addition, the aging resistance and butter resistance of the sealing strip material are also issues to be considered.

5. Abnormal noise caused by crack indentation or rust

When there are cracks, indentations or rust on the rolling surface of the slewing bearing, periodic vibrations like riveting rivets are heard, and the scars will occur continuously on the channel, and the scars will appear and disappear on the steel ball. The noise varies with the installation and lubrication conditions. The liberation method is to not knock the bearing or use a high-viscosity grease during installation.

6. Serious wear of raceway and rolling elements

Abnormal noise during the rotation is likely to be caused by serious wear of the raceway and rolling elements of the slewing bearing. At this time, the slewing bearing needs to be repaired.

The above is the whole content of why there are abnormal noises in the use of slewing bearings. In fact, there are abnormal noises because there is a fault, and the abnormal situation occurs because of the fault. Therefore, in order to solve the problem, we need to find out the cause of the problem and address the problem. It will be more convenient to use to solve the specific situation.

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