10401900 - Tweco Classic 4 MIG Gun, 400A, 15ft, Tweco Connection, 1/16 Wire

Heavy-Duty Performance with the Tweco Classic 4

When it comes to MIG welding, few tools are as iconic or as trusted as the Tweco Classic No. 4 MIG Gun. This 400-Amp air-cooled torch (Model 1040-1900) is engineered to perform in the toughest welding environments. From structural steel erection to heavy equipment repair, the Classic 4 provides the durability and current-carrying capacity needed to lay down high-quality welds shift after shift.

This model comes ready to work with a 15-foot cable, giving you the freedom to move around your workpiece without constantly repositioning your wire feeder. The Tweco backend connection is the most common in the industry, making this gun a plug-and-play solution for many machines (or easily adaptable with a kit). It is pre-configured for running 1/16" wire, a common size for heavy fabrication where deposition rates matter. The air-cooled design eliminates the need for water coolers and hoses, simplifying your setup while still delivering impressive power.

One of the biggest advantages of the Tweco Classic series is the consumable system. You never have to worry about finding parts; the 14 Series tips and 24 Series nozzles are stocked by almost every supplier. The gun's design also features a heavy-duty trigger switch that is tested to withstand thousands of cycles. If you need a MIG gun that works as hard as you do and doesn't require delicate handling, the Tweco Classic No. 4 is the proven choice.

Why Choose the Classic 4?

• Proven Reliability: A design that has stood the test of time in industrial settings.
• Cost-Effective: Air-cooled efficiency with low-cost consumables.
• Versatile: Capable of running flux-cored or solid wires (with appropriate liner/roll changes).
• Rugged: Resists damage from heat, spatter, and impact.