10401128 - Tweco Classic 4 MIG Gun, 400A, 25ft, Miller Connection, 1/16 Wire

Heavy-Duty Performance: Tweco Classic 4 MIG Gun (Miller Style)

The Tweco Classic No. 4 (1040-1128) is a workhorse MIG gun engineered for welders who demand durability and high amperage output. Rated for 400 Amps, this air-cooled torch is built to handle high-heat applications without overheating, ensuring you can keep the arc on longer. This specific assembly features an extra-long 25-foot cable, giving you the freedom to access hard-to-reach joints on large weldments without constantly repositioning your machine.

Designed with a Miller backend, this gun connects directly to Miller wire feeders, offering a seamless upgrade or replacement for your existing equipment. It comes pre-configured for running 1/16-inch (1.6mm) wire, making it ideal for heavy fabrication tasks involving thick materials where deposition rate is critical. The liner, contact tip, and internal geometry are all selected to ensure smooth feeding of this larger diameter wire.

The Classic No. 4 features Tweco's renowned handle design, which offers excellent grip and impact resistance. The metal-jacketed conductor tube and heavy-duty cable construction resist cuts, burns, and abrasion. Furthermore, the gun is fully field-repairable. From the trigger switch to the cable connection, every part can be serviced, extending the life of your investment. If you are running flux-cored or solid wire in a heavy industrial setting, this is the gun that sets the standard.

Technical Highlights:

• Amperage: 400A (60% Duty Cycle w/ CO2).
• Connection: Miller Style (Power Pin).
• Wire Capacity: Set up for 1/16" (1.6mm).
• Consumables: Uses standard Tweco 14 Series tips and 24 Series nozzles.
• Cooling: Air-cooled efficiency.