Axle Swivel bearing for excavator

In excavators, the slewing bearing plays a crucial role in enabling the rotation of the upper structure, including the cabin, mechanical arm, and related components. A single-row ball slewing bearing with hardened teeth is typically used to ensure strength and durability under heavy load conditions.

The bearing is driven by a motor or reducer that turns a gear, which in turn rotates the slewing ring, allowing the upper mechanism to rotate smoothly and accurately. It must withstand high axial forces, overturning moments, and circumferential forces from gear engagement. Additionally, strict requirements are placed on the bearing's clearance, installation accuracy, and material quality, as its performance is essential for the safe and reliable operation of excavators under demanding conditions.