Expanding Shaft

Engineered around the operating needs of surface and underground drilling equipment, the Expanding Shaft (OEM 3125 1974 80) is an aftermarket component for the rotation and drive train. It maintains location, spacing or joint integrity between mating components, helping preserve alignment under vibration and repeated operating loads.

Controlled geometry supports dependable assembly at the joint and helps prevent excess movement that could accelerate wear of surrounding parts. It is positioned for operators seeking a dependable alternative spare part with application-focused fit and efficient procurement. Compatibility records include BOOMER 281 and BOOMER 281DH. For best results, check the part reference together with the machine model and serial data.

Delkom supplies alternative spare parts for rock drilling equipment to maintenance teams across international mining and tunneling markets. When requesting stock status, technical support or a quotation, provide Delkom part number 120 400 066 together with OEM reference 3125 1974 80.