BUSHING, FRAME

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The BUSHING, FRAME, part number 552 228 30, is a key wear part for the mechanical joints on your drill rig. It serves as a replaceable bearing surface for pivot pins, ensuring smooth movement and protecting major structural components from premature wear.

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552 228 30 BUSHING, FRAME Located within the critical pivot points of a boom or feed system, this bushing provides a low-friction interface between a pin and its housing. It is designed to handle the high radial loads and vibrations generated during drilling operations. By acting as a sacrificial wear surface, it prevents costly damage to main structural elements like boom arms and cradles.

When a bushing wears, the resulting clearance creates excessive play in the joint. This directly affects drilling performance, making it difficult to accurately collar a hole or maintain a consistent feed angle. This looseness also transfers shock loads to the pins and surrounding structures, which can accelerate fatigue and lead to unexpected failures.

Common symptoms of a failing bushing include clunking noises during boom movement or visible slop at a pivot joint. During routine maintenance, check for any signs of oval wear or excessive clearance around the pin. Timely replacement restores the machine's positioning accuracy and prevents more serious secondary damage.