K471-22 - Lincoln Magnum 400 Semi-Automatic MIG Gun, 15ft, .052-1/16"

Lincoln Electric Magnum 400 MIG Gun Overview

The Lincoln Electric Magnum 400 Semi-Automatic Welding Gun (K471-22) is a heavy-duty air-cooled torch designed for high-performance MIG and flux-cored welding applications. Engineered to handle the rigors of industrial environments, this gun is rated for 400 amps at a 60% duty cycle using CO2 gas. It comes pre-configured with a 15-foot cable assembly and a liner setup for .052 to 1/16 inch (1.2-1.6 mm) wire diameters, making it an excellent choice for structural fabrication and heavy equipment manufacturing where larger wire sizes are common.

Robust Construction and Design

Durability is at the core of the Magnum 400 design. The gun tube is armored with an electrically insulated metal jacket that not only protects the internal components but also optimizes fine wire welding performance by reflecting radiant heat. The cable itself is encased in an abrasion-resistant, extruded rubber jacket that adds significant strength and longevity, preventing wear from dragging across shop floors or around sharp corners. A rugged strain relief system at the connection point minimizes acute cable angles, ensuring smooth wire feeding and protecting the internal liner from kinking.

Operator Comfort and Maintenance

Welding at 400 amps generates significant heat, and the Magnum 400 is built to keep the operator comfortable. It features Lincoln's classic curved handle, which is lightweight and balanced to provide a sure grip and reduce hand fatigue during long welding shifts. The one-piece modular trigger assembly is molded from high-heat-resistant material to withstand spatter and ensure reliable arc initiation. Additionally, the gun utilizes industry-standard expendable parts (contact tips, nozzles, diffusers), ensuring easy maintenance and compatibility with existing inventory. The package includes the K466-10 gun connector, making it ready to connect to compatible Lincoln wire feeders immediately.