Slewing bearing - analysis of common faults of bearing abnormal noise:

When the slewing bearing just leaves the factory, some bearings will make a uniform sound of steel ball rolling when it is idling, which is normal. When the slewing bearing is running after installation, it will be accompanied by another abnormal and louder sound, which is called abnormal sound.

Basic structure and working principle of excavator

The commonly used full-slewing is that the power unit of the hydraulic excavator, the main part of the transmission system, the slewing mechanism, auxiliary equipment and the cab, etc. are all installed on a rotatable platform, usually called the upper turntable. Therefore, the single-bucket hydraulic excavator can be summarized into three parts: the working device, the upper turntable and the traveling mechanism.