Slewing ring, also worm gear slew drive called slewing bearings or turntable bearing, is a big bearing which has the capacity to sustain the more axial load, radial load and tilting moment. It is referred to as: “machine joints”, the fundamental machinery transmission parts, between your two objects that need to be relative rotary movement. It gets the inner and outer band, rolling and other parts.
One can consider the slewing travel as a gearbox because the core motion components will be the slewing bearing and worm shaft. It also consists of auxiliary parts such as seals, housing, and electric motor. As a power supply, slew motor is usually DC planetary gear engine or AC gear motor. AC hydraulic electric motor is mainly found in the construction machinery as a power travel system. As the primary component is 
slewing ring get, slewing gearbox can easily withstand the axial and radial forces. The slew travel working basic principle: The worm is powered by the engine, which drives the external ring of the slewing ring to rotate; The outer ring result the torque through the flange and the internal band of the slewing band is set in the housing.
Slewing drive has reverse self-locking because of worm gear drive with invert self-locking characteristics. This feature greatly enhances the stability of the web host operating and safety aspect. When compared to traditional swing items, slewing drive gearbox is easy to install, easy to maintain, and saves considerable installation space.
