CAPSCREW

CAPSCREW 5541 0820 00 A cap screw is a fundamental fastener used to clamp major components together, ensuring the structural integrity of the entire machine. You will find these screws in high-stress locations throughout a rock drill, such as holding the drifter body sections together, securing the gear housing, or mounting the rotation unit. Proper clamping from this screw is essential for transferring drilling forces correctly and preventing movement between mated parts.

Using a fastener that does not meet the original equipment specifications can directly impact reliability and safety. An incorrect or fatigued cap screw can stretch or break under load, causing joint separation, serious oil leaks, and misalignment of internal parts. For example, if the screws securing the drifter's front head loosen, it can lead to catastrophic failure and presents a significant hazard on site.

When installing, always tighten cap screws to the torque value specified in the service manual using a calibrated torque wrench. Inspect the threads in the housing for damage before installation. As a matter of good practice, it is recommended to replace critical cap screws during major overhauls, as their material can fatigue over time.