K3135-2 - Lincoln Magnum PRO 550 Dual Schedule MIG Gun 15ft

High-Performance Industrial MIG Welding Gun

The Lincoln Electric Magnum PRO 550 Dual Procedure Welding Gun (K3135-2) is engineered for the most demanding industrial environments where performance and reliability are non-negotiable. Designed to operate at a 100% duty cycle with 550 amps using CO2 shielding gas (or 375 amps with mixed gas), this air-cooled gun is a powerhouse for heavy fabrication, shipbuilding, and construction applications. The defining feature of this model is its Dual Procedure capability, which integrates a switch directly onto the gun, allowing operators to toggle between two pre-set welding schedules without returning to the wire feeder. This functionality significantly increases efficiency in complex welding operations where varying parameters are required for different joints or positions.

Superior Consumable Life

Lincoln Electric has equipped the Magnum PRO series with their proprietary Copper Plus contact tips. These tips are designed with a larger diameter and greater mass than standard tips, which improves heat dissipation and extends the lifespan of the consumable. This is critical in high-amperage applications where heat buildup is the primary cause of tip failure. Additionally, the gun features a patent-pending Anti-Seize thread design on both the tip and diffuser, ensuring that consumables can be removed easily even after long periods of intense heat exposure, reducing downtime for maintenance.

Ergonomics and Durability

Despite its heavy-duty rating, the Magnum PRO 550 prioritizes operator comfort. The Comfort Grip handle utilizes a barrel-style design that is lightweight and balanced, minimizing wrist strain and fatigue during long shifts. The industrial-grade construction includes high-quality copper and aircraft-grade aluminum components, ensuring superior electrical conductivity and structural integrity. The Secure-Lock gun tube resists rotational slipping, providing a stable and predictable welding experience. With a 15-foot cable and the ability to handle wire diameters up to 1/8 inch, this gun is a versatile tool for serious welding professionals seeking to maximize productivity in extreme environments.