The Coupling (OEM Part No. 3222307839) is a mechanical spare part compatible with Epiroc ROC-D7 and ROC-D9 drilling rigs. Manufactured from alloy steel, it functions as a power connection component in the transmission system. The coupling connects rotating components, transfers mechanical power, and helps maintain smooth equipment operation. Designed for heavy-duty mining environments, this replacement mechanical component provides high strength, reliable performance, and extended service life for drilling equipment maintenance and repair applications.