245926 - Miller MDX-100 MIG Gun 10ft .030-.035 - 245926

Technical Overview of the Miller MDX-100 MIG Gun

The Miller MDX-100 MIG Gun (SKU: 245926) is a premium 100-amp, air-cooled welding gun designed to replace standard guns on small-frame Miller power sources. Engineered for precision and reliability, this gun utilizes the AccuLock™ MDX™ consumable system. This system is critical for maintaining concentricity between the contact tip and the liner, which significantly reduces wire feeding friction and ensures a stable arc. The gun is rated for 100 amps at 100% duty cycle when using CO2 shielding gas, and 80 amps at 60% duty cycle with mixed gases.

The assembly features a 10-foot (3-meter) cable, offering adequate reach for benchtop and garage applications without compromising wire feedability. The handle is constructed with a durable, impact-resistant polymer and features rubber overmolding to improve grip stability and reduce hand fatigue. The rear strain relief is robust, preventing cable kinking at the machine connection point. This gun comes factory-equipped to run .030 to .035 inch (0.8–0.9 mm) diameter wires, making it immediately ready for common fabrication tasks.

Compatibility is a key strength of the MDX-100. It serves as the standard or upgrade gun for machines such as the Millermatic® 141, 190, 211, 212 Auto-Set™, and the Multimatic® 200 and 215. The integration of AccuLock consumables simplifies inventory management, as the contact tips and nozzles are designed for quick changeovers and long service life. The liner is easily replaceable, ensuring the gun can be maintained for long-term performance.