Slewing ring, also known as slewing bearings or turntable bearing, is a big bearing which is able to sustain the more axial load, radial load and tilting moment. It is 
referred to as: “machine joints”, the essential machinery transmitting parts, between your two objects that need to be relative rotary motion. It has the inner and outer ring, rolling and other parts.
You can consider the slewing drive as a gearbox because the core motion components are the slewing bearing and worm shaft. In worm gear slew drive addition, it consists of auxiliary elements such as for example seals, housing, and engine. As a power supply, slew motor is generally DC planetary gear electric motor or AC gear motor. AC hydraulic engine is mainly used in the construction machinery as a power drive system. As the core component is slewing ring get, slewing gearbox can easily endure the axial and radial forces. The slew get working basic principle: The worm is powered by the motor, which drives the outer band of the slewing band to rotate; The external ring output the torque through the flange and the inner band of the slewing band is set in the housing.
Slewing drive has invert self-locking because of worm gear drive with reverse self-locking features. This feature significantly enhances the balance of the sponsor operating and safety element. When compared to traditional swing products, slewing drive gearbox is easy to install, simple to maintain, and saves considerable installation space.
worm gear slew drive
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