K4360-1 - Lincoln Magnum PRO 100SG Aluminum Spool Gun 8-Pin

Technical Overview of the Lincoln Magnum PRO 100SG

The Lincoln Electric Magnum PRO 100SG Spool Gun (K4360-1) is a specialized wire feeding solution designed to address the mechanical challenges associated with feeding soft aluminum welding wire. Unlike standard MIG guns which push wire through a long liner—often resulting in buckling or "birdnesting" when using soft alloys like 4043 or 5356—the 100SG locates the wire spool directly on the gun itself. This short feed distance ensures consistent, reliable delivery of the filler metal to the arc. The unit is rated for a welding output of 130 Amps at a 30% duty cycle, making it an ideal accessory for light fabrication, automotive repair, and hobbyist applications involving aluminum alloys.

This model features a direct 8-pin Amphenol-style connection, specifically engineered for plug-and-play compatibility with the Lincoln POWER MIG 140 MP, MIG-Pak 140, and LE31MP multi-process welders. The integration eliminates the need for bulky external adapter modules or separate control boxes, streamlining the setup process. The gun comes equipped with a 10-foot (3.0 meter) cable assembly, providing sufficient reach for working around large workpieces or vehicles. The wire drive system is optimized for wire diameters ranging from 0.030 inches to 0.035 inches (0.8 mm to 0.9 mm), covering the most common gauges used in light industrial aluminum welding.

A key technical advantage of the K4360-1 is its utilization of the Magnum PRO consumable platform. It ships with Copper Plus contact tips, which feature a larger diameter and mass compared to standard tips, improving heat dissipation and extending tip life in the higher-heat environment of aluminum welding. The gas diffusers feature Anti-Seize threads to prevent fusing during thermal cycling. The gun itself is constructed with a focus on ergonomics, weighing only 3.5 lbs (1.6 kg) with the spool installed, and features a balanced handle with a full-travel mechanical trigger that provides tactile feedback to the operator, even when wearing thick welding gloves.

The K4360-1 is supplied as a complete kit, including the gun, a 1 lb spool of 4043 aluminum wire, a drive roll, three contact tips, and a durable carrying case. This comprehensive package ensures that the operator has all necessary components to begin welding immediately upon connection to a compatible power source.