K3131-4 - Lincoln Magnum PRO 350 Dual Schedule MIG Gun 25ft

Industrial Grade Dual Procedure MIG Gun

The Lincoln Electric Magnum® PRO 350 Dual Procedure Welding Gun (K3131-4) is a premium air-cooled solution designed for heavy-duty industrial fabrication. Engineered to withstand the rigors of extreme environments such as shipbuilding, heavy equipment manufacturing, and construction, this gun is rated at 100% duty cycle. It delivers 350 Amps when using CO2 gas and 285 Amps with mixed gas shielding, ensuring consistent performance during prolonged welding sessions without overheating.

A defining feature of this model is the Dual Procedure capability. The integrated switch control allows the operator to toggle between two distinct welding schedules (voltage and wire feed speed) directly from the gun handle. This functionality is critical for applications requiring frequent transitions between different weld positions or material thicknesses, significantly reducing downtime associated with returning to the power source to adjust settings. The 25-foot cable length provides an extensive working range, further enhancing operational flexibility on large assembly floors.

Maintenance and longevity are core to the Magnum PRO series design. The gun utilizes Lincoln Electric's proprietary Copper Plus® contact tips, which possess a larger diameter and greater mass than standard tips. This design improves heat dissipation, extending the life of the consumable and reducing replacement frequency. Additionally, the patent-pending Anti-Seize thread design on the tips and diffusers prevents parts from fusing together, simplifying maintenance. The Secure-Lock gun tube ensures the front end remains rigid and does not rotate unexpectedly during operation, providing the welder with precise control.