Slewing bearing for Liebherr Liebherr CNT-650

The slewing bearing 3201R2 serves as the primary mechanical interface between the crane chassis and the rotating superstructure. It facilitates the controlled rotation of the upper assembly, which houses the engine, cab, and boom. By design, this component manages complex load distributions, including vertical axial forces, horizontal radial forces, and overturning moments generated during lifting operations. Its integration ensures the stability and maneuverability of the crane during heavy-duty cycles.

This component is engineered for fitment on Liebherr LTM-1055-3.1 and Liebherr CNT-650 cranes, as well as the corresponding P&H CNT-650 and P&H LTM-1055-3.1 models. It functions as a large-diameter rolling element bearing that allows the superstructure to pivot smoothly over the base frame. The bearing typically features an integrated gear profile to interface with the swing drive system, enabling precise rotational positioning.

Slewing bearings act as the central pivot point for heavy machinery. They consist of concentric rings with internal rolling elements that distribute weight across the entire circumference of the mounting surface. Proper maintenance and regular lubrication of these bearings are required to manage the high-stress environment of crane operations and to maintain rotational accuracy throughout the service life of the machine.