Terex
Slew gear reducer for Terex HC230
This slew gear reducer is designed for the Terex HC230 crane. It manages the rotation of the crane superstructure by reducing motor speed and increasing torque.
Parts diagram
Compatible models
Specifications
- Part number
- 0669 780 UA
- Brand
- Terex
The slew gear reducer, part number 0669 780 UA, serves as a critical component in the rotation system of the Terex HC230 crane. This assembly facilitates the controlled movement of the crane's superstructure, including the boom and cab, relative to the chassis. By reducing the rotational speed of the drive motor and multiplying the output torque, the unit allows for precise positioning of heavy loads during lifting operations.
This component is specifically engineered for use in the Terex HC230. It consists of an internal arrangement of gears, bearings, and seals housed within a protective casing to maintain lubrication and prevent contamination. Proper function of this assembly is necessary for smooth rotation and to maintain the required operational tolerances of the crane's upper works.
A slew gear reducer functions by translating high-speed, low-torque input from a hydraulic or electric motor into the low-speed, high-torque output required to rotate the heavy mass of a crane. Maintaining the integrity of the internal gear mesh and bearing alignment is essential for the operational accuracy and safety of the machine's slewing system.

