Bucyrus
Bumper, Lever, Upper Stop for Bucyrus 4100XPCAC
This upper lever stop bumper, part number S007778, serves as a physical limit and shock absorber for control mechanisms in Bucyrus and P&H mining shovels. It is compatible with models including the 4100XPCAC and 7495HR2.
Compatible models
Specifications
- Part number
- S007778
- Brand
- Bucyrus
The upper lever stop bumper acts as a physical barrier and energy absorber within the control systems of heavy mining shovels. By limiting the travel of a lever or mechanical linkage at its upper position, this component prevents metal-to-metal contact and absorbs impact energy. This action protects connected mechanical assemblies from excessive stress and helps maintain controlled movement during operation.
This component is designed for use in Bucyrus 4100XPCAC, Bucyrus 7495HR2, P&H 4100XPCAC, and P&H 7495HR2 mining shovels. It is typically integrated into the operator control interface or specific boom and bucket linkage systems where precise movement constraints are required to prevent mechanical over-travel. Proper installation of this part is necessary to ensure the integrity of the surrounding control hardware and to protect the machine from potential damage caused by uncontrolled lever movement.
In heavy machinery, bumpers and stops of this type function as critical protective elements. They manage the kinetic energy generated by moving parts, preventing structural damage and reducing the mechanical fatigue that can occur when components reach their maximum range of motion. By providing a cushioned stop, these parts help preserve the operational alignment of the machine control systems.

