The Lincoln Electric Magnum 400 Dual Procedure Welding Gun (K1722-2) is a high-capacity semi-automatic MIG gun designed for heavy-duty industrial applications. Rated at 400 amperes with a 60% duty cycle using CO2 shielding gas, this unit is engineered to manage the substantial heat generation associated with higher amperage welding. The K1722-2 configuration includes a 15-foot (4.5 meter) cable assembly and is factory-fitted with a liner accommodating wire diameters from .035 to .045 inches (0.9 to 1.2 mm), making it immediately ready for standard fabrication tasks involving mild steel, stainless steel, or flux-cored wires.
A defining technical feature of this model is its Dual Procedure capability. This functionality allows operators to switch between two different welding schedules (voltage and wire feed speed) directly from the gun trigger, provided the wire feeder supports dual procedure operation. This significantly reduces downtime in applications requiring frequent parameter changes, such as alternating between root and fill passes or vertical and flat positions. The cable construction utilizes a higher copper strand count compared to the Magnum 300 series, ensuring efficient current transfer and minimizing resistive heating within the power cable itself.
The gun tube is armored with an electrically insulated metal jacket, a design choice that optimizes fine wire welding performance by maintaining rigidity and protecting the internal liner. The exterior cable is protected by an abrasion-resistant, extruded rubber jacket, which provides superior resistance to cuts, burns, and general shop wear compared to standard vinyl jackets. The trigger assembly is a one-piece modular unit molded from high heat-resistant material, specifically designed to withstand spatter and prolonged thermal exposure without deformation or failure. The gun connects via standard Lincoln terminations, ensuring compatibility with a wide range of Lincoln Electric wire feeders.
| Additional Information |
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| Amperage:400 |
| Brand:Lincoln Electric |
| Duty Cycle:60% |
| Packaging Description:1 Per Ea |
| Cable Length:15 ft |
| Wire Size Range:.035-.045 in |
| Process Type:MIG, Flux-Cored Gas-Shielded |
| Gun Tube Angle:60° |
| Cooling Method:Gas Cooled |
