Slewing drive is made up of worm shaft, slewing bearings, housing, motor and other parts. Since the core part is slewing bearing, the products of slewing driving can bear the axial force, radial force, and tilting moment. Slewing driving device has the distinguishing characters of great torque, high efficiency, steady operation, handy installation, easy maintenance, saving the space of installation and so on.

It has many advantages such as  the highest efficiency, compact structure, best performance of  speed govering  useing on the bucket wheel machine. In addition, the operator needn't  spend time and energy on overload protection.