This reinforced metal-rubber bushing absorbs vibration and dampens movement at the pivot points of the straw-walker assembly. It sits between the walker frame and its mounting bracket, isolating metal-to-metal contact that would otherwise accelerate wear. A worn bushing allows excessive play in the walker linkage, which leads to uneven shaking motion and reduced separation efficiency. The metal insert provides a rigid inner bore for the mounting bolt, while the rubber layer compresses to accommodate angular misalignment during operation. On reinstall, ensure the bushing is fully seated in its bore and that the mounting bolt is torqued to the specification for that joint.