
The Tweco No. 4 MIG Gun (SKU: 10401137) is a legendary piece of equipment in the welding industry, renowned for its rugged durability and high-performance capabilities. Designed for professional welders who demand reliability, this air-cooled MIG gun is rated at 400 Amps at a 60% duty cycle using CO2 gas, making it suitable for a wide range of heavy-duty industrial applications. Whether you are working in structural steel fabrication, heavy equipment manufacturing, or general maintenance and repair, the Tweco No. 4 delivers consistent arc stability and wire feeding performance.
This specific model comes pre-configured with a Miller-style back-end connection, allowing for seamless integration with compatible Miller wire feeders and power sources. The 15-foot (5-meter) cable assembly provides ample reach for working around large assemblies without compromising wire feed smoothness. The cable itself is constructed with high-quality materials to resist abrasion, cuts, and heat, ensuring a long service life even in the toughest shop environments.
Maintenance is straightforward with the Tweco No. 4. It utilizes the widely available and economical Tweco 14 Series contact tips, 24 Series gas nozzles, and 54 Series gas diffusers. The gun features a 360-degree rotatable conductor tube, allowing welders to adjust the torch angle for optimal access to difficult joints. The ergonomic handle is designed to fit comfortably in the hand, reducing operator fatigue during extended welding sessions. With its field-repairable design and robust construction, the Tweco No. 4 remains a top choice for welders seeking a dependable 400A MIG gun.
| Additional Information |
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| Brand:Tweco |
| Amperage:400 |
| Length:15 ft |
| Back End:Miller |
| Process Type:MIG (GMAW), Flux Cored (FCAW) |
| Torch Type:Air Cooled MIG Gun |
| Connection Type:Miller Direct Plug |
| Amperage Rating:400A @ 60% Duty Cycle |
| Cable Length:15 ft (5m) |
| Consumable Compatibility:Tweco 14 Series Contact Tips, Tweco 24 Series Nozzles, Tweco 54 Series Diffusers |
| Wire Size Capacity:Up to 5/64" (2.0mm) |
| Cooling Method:Air Cooled |
| Packaging Description:pack of 1 |