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