CONNECTING CARD

550 221 25 CONNECTING CARD Functioning as a key structural link, this connecting piece transmits forces between major components, often within the boom's articulation joints. It creates a solid pivot point, allowing for controlled movement while maintaining the structural integrity of the entire positioning system. Its precise geometry ensures that hydraulic cylinders can position the drill feed with accuracy.

Over time, wear on this component can introduce looseness or 'play' into the system. For example, when this connecting piece wears, the entire boom might shift slightly under load, making it difficult to accurately collar a hole. This not only slows down the drilling cycle but also puts extra stress on adjacent pins, bushings, and hydraulic cylinder mounts, increasing the risk of a more serious mechanical failure.

Listen for unusual clunking sounds from the boom joints during movement, as this can indicate a worn link. During regular maintenance, visually inspect the part for any signs of cracking or deformation, especially around the pin bores. If excessive movement is found in a joint that cannot be resolved by new pins, the connecting piece should be replaced to restore positioning accuracy and prevent further damage.