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 mainly used to support the upper body mass and bear the working load. Because the slewing ring of excavator generally operates under heavy load and the working environment is relatively harsh, the slewing ring is prone to failure. The most common fault condition is various abnormal noises. First, it is necessary to confirm whether it is the steel ball rolling sound made by the newly delivered slewing ring when idling. If yes, this is a normal noise. If the installation is not long, it is normal to have a slight abnormal noise. Generally, it will disappear automatically after running in for a period of time. Therefore, this article will summarize the causes of loud and special noises. For reference only.
1. Abnormal noise caused by lubricating grease
Lack of grease in the raceway, uneven filling of grease, poor quality and aging of grease, incorrect selection of lubricant, etc. will cause abnormal noise in the slewing ring of the excavator. The fault can be solved by timely filling and changing the lubricating grease.
2. Abnormal noise caused by damaged sealing strip
Check whether the sealing strip is worn. Because the structure of slewing ring sealing strip plays a key role in sealing performance. When the sealing strip cannot fit the slewing ring completely, it is easy to cause grease leakage. In addition, the aging resistance and yellow oil resistance of the sealing strip material also need to be considered.
3. The raceway and rolling element are severely worn
The abnormal noise of excavator during slewing is probably caused by severe wear of slewing ring raceway and rolling body. At this time, the slewing ring needs to be repaired.
