Connecting Upper and Lower Structures: It physically connects the robust upper frame to the carbody (undercarriage), forming the central pivot point of the machine.
Enabling Full Rotation: It allows the operator to swing the entire upper structure continuously in either direction. This is essential for efficient digging, lifting, and loading cycles.
Transferring Loads: The slewing bearing is engineered to withstand immense and complex loads generated during operation. These include:
Axial Loads: Vertical forces from the weight of the upper structure and lifted loads.
Radial Loads: Horizontal forces caused by digging, side-pulling, and operating on slopes.
Moment Loads (Overturning Moments): The powerful tipping forces created when the boom is extended with a heavy load.
Ensuring Stability and Precision: A high-quality slewing bearing provides the stability needed for precise machine control, especially during critical lifting operations or when handling heavy materials.
This 7Y-0934 slewing bearing is used for 330 excavator.
Related part number:
7Y-0934
3B-8489
6W-7687
7Y-0935
3B-8489
7Y-0423
7Y-2032
3B-8489
6I-6394
