The Shaft (OEM Part No. 5112253800) is an alloy steel mechanical spare part designed for power transmission and rotational applications in mining and drilling equipment. It is compatible with Boomer 291, SIMBA H1254, and Boomer-281. The shaft transfers rotational force between connected mechanical components and supports reliable operation of the drilling rig assembly. Manufactured for aftermarket replacement applications, the 5112253800 Shaft is suitable for replacing worn or damaged transmission components during equipment maintenance and repair. Its durable alloy steel construction provides dependable mechanical performance in demanding underground mining and drilling environments.