10401910 - Tweco Classic 4 MIG Gun, 400A, 20ft, 1/16in Wire, Tweco Connection

Industry Standard Heavy-Duty MIG Gun

The Tweco Classic 4 MIG Gun (Part Number 1040-1910) is a premier choice for industrial welding applications requiring robust performance and reliability. Rated at 400 Amps at a 60% duty cycle using CO2 gas, this air-cooled gun is engineered to handle high-volume fabrication environments. This specific configuration comes equipped with a 20-foot cable assembly, providing significant reach for welders working on large structures, trailers, or heavy machinery, reducing the need to constantly relocate the wire feeder.

Designed for efficiency and ease of maintenance, the Classic 4 utilizes the widely available Tweco 14 Series contact tips, 24 Series gas nozzles, and 54 Series gas diffusers. This compatibility ensures that consumables are easy to source and replace, minimizing downtime. The gun is pre-configured for 1/16-inch (1.6mm) welding wire, making it ready for heavy-deposition applications right out of the box. The rear connection is a standard Tweco style, ensuring compatibility with a vast range of wire feeders from major manufacturers that utilize or adapt to the Tweco connection standard.

The construction of the Classic 4 features a metal-jacketed conductor tube and a heavy-duty cable that resists cuts, burns, and abrasion common in shop environments. The internal design promotes efficient current transfer and heat dissipation, extending the life of the gun and its consumables. For facility managers and procurement specialists, the Tweco Classic 4 represents a low-risk, high-value investment in welding equipment that is proven to perform shift after shift.