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How to solve the problem of abnormal noise of excavator slewing device

The function of the rotary device is that the excavator can rotate left and right during operation. The slewing ring is an important part of the slewing device, which is used to support the working load and body mass of the upper body. However, in case of poor working environment and heavy load operation of slewing ring, slewing ring is prone to failure and various abnormal noises. This article will summarize the solutions when the slewing ring has abnormal noise.

1. Foreign matters entering slewing ring

If there are sand particles and iron filings in the slewing ring, there will be abnormal noise, and there will also be the failure of rotation resistance. In this case, be prepared for cleaning before installation. The bearing, seat hole and accessories shall be cleaned and the foreign matters in the lubricant shall be removed. Be careful not to use plastic cages with impure materials or embedded foreign matters, so as to effectively remove the corresponding abnormal noise.

2. Mounting bolts are loose

Sometimes the abnormal noise is caused by the operation problem during installation. The uneven mounting surface will cause the rolling to produce a gap, resulting in abnormal noise. In addition, abnormal noise may also occur when the gears are poorly exposed. If it is serious, it will also cause gear breakage. It should also be noted that the looseness of the installed bolts will also lead to the elastic deformation of the slewing ring, resulting in the deformation of the position and the clearance. Check and repair immediately and tighten the bolts.

3. Damage of slewing ring sealing strip

The sealing strip of slewing ring plays an important role in sealing performance. If the sealing strip is damaged and the slewing ring can no longer fully fit, the lubricating oil will be lost. In addition, the aging of the sealing strip material also needs to be considered.

4. Loss of lubricating oil and uneven filling of lubricating grease

Lack of grease in the raceway, uneven filling of grease, poor quality and aging of grease, incorrect selection of lubricant, etc. will also cause abnormal noise in the slewing ring of the excavator. The abnormal noise can be solved by timely use of lubricant, timely filling and timely replacement.

5. The slewing ring is severely worn

Abnormal noise may also be caused by slewing ring rolling or serious wear of rolling element. This is to repair the slewing ring.

How to solve the problem of abnormal noise of excavator slewing device

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