The Shaft Complete (OEM Part No. 3128309970) is a spare assembly compatible with Boltec 235, Boltec-MC, and Boomer-MD underground drilling rigs. Manufactured from high-strength alloy steel, it is designed as a mechanical component for the shaft assembly position in mechanical drive and pivot support systems. The shaft complete provides reliable support, alignment, and rotational connection between mechanical assemblies, ensuring smooth and stable equipment operation. Its robust construction delivers excellent strength, durability, and resistance to mechanical stress in underground mining environments. This OEM replacement shaft assembly helps maintain efficient drilling performance and dependable equipment reliability.