The Expanding Shaft (OEM Part No. 3222307283) is a mechanical spare part compatible with Epiroc underground mining equipment, including L8, Boomer S2, PowerRoc-D55, ROC-L6, and S2 models. Manufactured from hardened steel, it functions as an expansion and positioning component in the drilling system. The expanding shaft provides secure positioning, improves component connection stability, and supports accurate drilling operation. Designed for underground mining conditions, this replacement mechanical component offers excellent strength, reliable performance, and long service life for drilling equipment maintenance applications.