10401063 - Tweco Spray Master 400A MIG Gun, 15ft, Miller Style, 1/16 Wire

Heavy-Duty 400A MIG Gun for Industrial Fabrication

The Tweco Spray Master MS415M-116 (SKU: 1040-1063) is a premium air-cooled MIG gun designed for high-performance welding in demanding industrial environments. Part of the renowned Spray Master series, this gun is engineered to facilitate spray transfer welding, a process that requires consistent high amperage and superior heat dissipation. Rated at 400 Amps at an 80% duty cycle using CO2 shielding gas, the MS415M provides the thermal capacity necessary for long weld runs and heavy plate fabrication.

This specific model comes pre-configured with a Miller-style rear connection, ensuring seamless compatibility with Miller wire feeders and power sources without the need for adapters. The 15-foot (4.6-meter) cable assembly offers a generous working range, allowing operators to maneuver around large workpieces effectively. The gun is set up out of the box for 1/16-inch (1.6mm) welding wire, making it an ideal choice for structural steel, heavy equipment manufacturing, and flux-cored applications requiring larger diameter wires.

Technically, the Spray Master series distinguishes itself with its simplified maintenance and robust construction. It utilizes the widely available Tweco 11-Series consumables, including heavy-duty contact tips and slip-on nozzles that ensure reliable gas coverage. The conductor tube is insulated and armored to resist damage from spatter and impact. Internally, the cable features high-grade copper stranding for optimal current transfer and a durable outer jacket that resists cuts and abrasion. For MRO professionals and facility managers, the Tweco Spray Master represents a standardized, reliable solution that minimizes downtime and maximizes arc-on time.