10401844 - Tweco Spray Master SMV415M-116 MIG Gun 400A 15ft Miller Connection

Heavy-Duty Tweco Spray Master MIG Gun for Industrial Fabrication

The Tweco Spray Master SMV415M116 is a premium air-cooled MIG gun designed to meet the rigorous demands of heavy industrial welding. Part of the renowned Spray Master V-Series, this 400-amp torch is engineered for high-amperage applications where durability and performance are non-negotiable. It comes pre-configured with a 15-foot cable and a Miller-style rear connection, making it an immediate drop-in replacement for compatible Miller wire feeders. The gun is set up specifically for running 1/16-inch (1.6mm) welding wire, ideal for structural steel, heavy equipment manufacturing, and shipbuilding tasks.

What sets the V-Series apart is the integration of Tweco's revolutionary Velocity consumables. Unlike traditional MIG guns that require a separate gas diffuser, contact tip, and nozzle, the Velocity system simplifies the front end. The contact tip features a tapered design that seats directly into the conductor tube, optimizing electrical conductivity and heat transfer. This design keeps the tip cooler, extending its lifespan and ensuring a more stable arc even during prolonged spray transfer welding. The threadless, drop-in contact tips and adjustable slip-on nozzles make consumable changes fast and frustration-free.

Operator comfort is central to the Spray Master design. The ergonomic handle fits naturally in the hand, reducing grip fatigue, while the knuckle-joint cable connection allows for flexible maneuvering without straining the wrist. The 15-foot cable assembly is robust yet flexible, resisting cuts and abrasion in harsh shop environments. Whether you are welding thick plate or running long beads on structural beams, the SMV415M116 delivers the consistent wire feeding and shielding gas coverage necessary for X-ray quality welds.

Key Benefits

• High Duty Cycle: Rated for 400 Amps at 80% duty cycle using CO2 gas.
• Velocity Technology: Fewer consumable parts mean lower inventory costs and less downtime.
• Superior Cooling: Enhanced heat dissipation keeps the front end cooler for longer life.
• Ready to Weld: Comes ready for 1/16" wire with a direct Miller plug connection.