10401101 - Tweco Classic 4 MIG Gun 400A 10ft Tweco Connection

Industry Standard 400A MIG Welding Gun

The Tweco Classic No. 4 MIG Gun (SKU: 10401101) represents the benchmark for heavy-duty, air-cooled MIG welding performance. Known throughout the industrial sector for its reliability and robust construction, the Classic No. 4 is designed to handle high-amperage applications with ease. This specific model features a 10-foot cable assembly and a standard Tweco back-end connection, ensuring seamless compatibility with a wide range of wire feeders and power sources that utilize the Tweco-style termination.

Engineered for professional fabrication environments, the gun is rated at 400 Amps at a 60% duty cycle when using CO2 shielding gas. The construction features a metal-jacketed conductor tube and a heavy-duty handle that resists impact and heat, making it ideal for harsh shop environments such as structural steel fabrication, heavy equipment manufacturing, and shipyards. The 10-foot cable length offers a practical balance, providing sufficient reach for bench work and vertical welding while minimizing wire feeding friction often associated with longer cable lengths.

Maintenance and consumable replacement are straightforward with the Classic No. 4. It utilizes the widely available Tweco 14 Series contact tips, 24 Series gas nozzles, and 54 Series gas diffusers. The modular design allows for easy field repairs, including liner replacement and trigger servicing, minimizing downtime. The gun's ergonomic curved handle reduces operator fatigue during extended welding sessions, while the heavy-duty cable support prevents kinking and wire feed issues at the feeder connection.

Technical Specifications:

• Model: Classic No. 4
• Amperage Rating: 400A (CO2) / 300A (Mixed Gas)
• Duty Cycle: 60%
• Cable Length: 10 ft (3m)
• Connection Type: Tweco
• Wire Capacity: Up to 5/64" (2.0mm)
• Cooling: Air Cooled