Bail bushing for Bucyrus 4100XPCAC

The bail bushing, part number R82321D19, serves as a mechanical interface within the pivot and articulation points of heavy mining shovels. By providing a controlled surface for rotation and sliding, it facilitates movement between connected structural components while managing the forces applied during excavation and material handling cycles. This component is engineered to maintain alignment and support the structural integrity of the assembly during operation.

This specific bushing is compatible with Bucyrus 4100XPCAC, Bucyrus 7495HR2, P&H 4100XPCAC, and P&H 7495HR2 models. It is manufactured with an 11.00-inch inner diameter and utilizes a concentric CNC-machined design to meet the required tolerances for these large-scale mining machines. The part is intended for use in high-load articulation points where consistent performance is required for the boom, dipper, and hoist systems.

In heavy machinery, bushings act as replaceable wear surfaces that protect more expensive structural members from direct contact and friction. They are positioned at joints to absorb radial loads and distribute forces across the contact area. Proper installation and regular inspection of these components are necessary to prevent excessive play in the linkages and to maintain the operational precision of the machine.