BALL

552 018 99 BALL Inside a hydraulic or pneumatic system, this steel BALL serves as the primary sealing element in a check valve. It rests on a machined seat, allowing fluid to flow in one direction while immediately blocking any reverse flow. You'll find these components in many locations, from the internal circuits of the rock drill's drifter to the main hydraulic power pack or lubrication distribution blocks.

The integrity of this small part is essential for maintaining correct system pressures and efficiency. A worn or damaged BALL will not seat correctly, leading to internal leakage. This can cause a noticeable drop in performance, such as reduced impact energy in the drifter or inconsistent boom movements, ultimately slowing down the entire drilling cycle.

Troubleshooting a faulty check valve often involves checking for symptoms like pressure loss or component drift. When servicing the valve, inspect the BALL for any pitting, scoring, or deformation. Always replace it if any wear is visible, and ensure its seat inside the valve body is clean and undamaged before installation.