The Expanding Shaft (OEM Part No. 3155236780) is a spare part compatible with Simba H1354 and Simba H1254 underground drilling rigs. Manufactured from high-strength alloy steel, it serves as a mechanical component for the drill rig positioning lock mechanism at the expanding shaft mount position. It provides secure expansion locking, accurate alignment, and stable positioning of connected components during drilling operations. Designed for heavy-duty mining applications, this alloy steel expanding shaft offers excellent mechanical strength and durability. Precise OEM dimensions ensure reliable installation and consistent equipment performance.