This product is High Precision Have Large In Stock Horizontal Open Type Slewing Drive. The open base is adopted, the tooth surface is easy to maintain and the cost of the whole machine is reduced.Using special machine tools to produce hourglass worm, multi tooth contact, transfer larger torque, and be able to bear larger axial force, radial force and tipping torque.The product design adopts the general dimensions at home and abroad, and is replaced later.