Slewing ring, also referred to as slewing bearings or turntable bearing, is a large bearing which is able to sustain the more axial load, 
radial load and tilting moment. It is referred to as: “machine joints”, the fundamental machinery transmission parts, between the two objects that require to be relative rotary motion. It gets the inner and outer ring, rolling and other components.
You can consider the slewing get as a gearbox since the core worm gear slew drive motion components will be the slewing bearing and worm shaft. In addition, it consists of auxiliary components such as seals, housing, and electric motor. As a power supply, slew motor is usually DC planetary gear electric motor or AC gear electric motor. AC hydraulic electric motor is mainly used in the structure machinery as a power travel system. As the core component is slewing ring get, slewing gearbox can readily withstand the axial and radial forces. The slew get working principle: The worm is driven by the motor, which drives the outer band of the slewing band to rotate; The outer ring output the torque through the flange and the internal ring of the slewing band is fixed in the housing.
Slewing drive has invert self-locking because of worm gear drive with reverse self-locking characteristics. This feature significantly enhances the balance of the host operating and safety factor. When compared to traditional swing products, slewing travel gearbox is simple to install, simple to maintain, and will save considerable installation space.
