Bushing 7.50 inch diameter for Bucyrus 4100XPCAC

The R51154D11 bushing is a cylindrical mechanical component designed to be installed into a housing to provide a bearing surface for a pin or rotating shaft. It functions as a sliding bearing to reduce friction between two parts in relative motion. This specific component features a 7.50-inch diameter, sized to accommodate the heavy-duty pivot points found in large-scale mining equipment.

This part is designed for use in Bucyrus 4100XPCAC, 7495HR2, P&H 4100XPCAC, and 7495HR2 mining shovels. These bushings are typically located in critical articulation points such as the boom, dipper arm, bucket linkages, and propulsion systems, where they support significant loads and constant movement. Proper fitment is required to ensure the correct alignment of the pin and to minimize clearance within the assembly.

In heavy machinery, bushings serve as sacrificial wear surfaces that protect more expensive structural components from direct contact and friction. By providing a controlled interface for pivot points, they allow for smooth operation under load. Regular inspection and maintenance of these components help prevent excessive play in joints, which can otherwise lead to accelerated wear on the surrounding pins and bores.