BUSHINGS, LIFT ARM

560 440 38 BUSHINGS, LIFT ARM This split bushing serves as a critical wear component within the various pivot points of a drill rig, such as the boom and feed linkages. It creates a low-friction interface between a pin and its bore, allowing for controlled articulation while absorbing heavy loads. The split design allows for easier installation in locations where access is limited.

Over time, bushings naturally wear out from constant movement and high-pressure loads. When a bushing wears excessively, it introduces unwanted play into the joint. For example, a worn boom joint bushing can make it difficult to accurately position the feed, leading to slower collaring and reduced overall drilling efficiency. Timely replacement prevents this sloppiness and protects the more expensive pins and structural bores from damage.

A key sign of a worn bushing is a noticeable clunking sound or visible looseness when operating a joint. During regular machine inspections, check for any excessive movement in the pivot pins. Replacing these bushings when play is first detected is a straightforward maintenance task that prevents more significant and costly structural repairs down the line.