The Tweco 10401130 Classic No. 4 MIG Gun is a premier choice for industrial fabrication, offering a robust 400-amp output at a 60% duty cycle. Designed with a 10-foot (3-meter) cable assembly, this specific model is factory-fitted with a Miller-style back-end connection, making it an immediate drop-in replacement or upgrade for compatible Miller wire feeders and integrated MIG machines. The Classic No. 4 series has established itself as the benchmark for air-cooled MIG guns, favored for its durability, ease of service, and high-performance capabilities in structural steel, heavy equipment manufacturing, and general fabrication environments.
This gun is engineered to handle wire diameters ranging from .035" (0.9mm) up to 5/64" (2.0mm), depending on the liner and contact tip configuration. It comes standard with the renowned Tweco consumable platform, utilizing 14-Series contact tips, 24-Series nozzles, and 54-Series gas diffusers. The cable assembly features high-quality copper stranding for efficient current transfer and a durable outer jacket designed to withstand the rigors of a welding shop, including exposure to heat, spatter, and abrasion. The Miller connection pin ensures positive electrical contact and secure gas flow, integrating seamlessly with the solenoid and power output of Miller power sources.
One of the key advantages of the Tweco Classic series is its fully serviceable design. From the trigger switch to the gooseneck and cable liner, every component is replaceable. This modularity reduces long-term ownership costs, as users can repair specific wear points rather than replacing the entire gun. The metal-jacketed conductor tube (gooseneck) is insulated to prevent electrical shorts and is rotatable in some configurations to reduce operator fatigue. The 10-foot length is ideal for bench welding where excess cable slack can be a tripping hazard or cause wire feeding issues, providing a direct and smooth path for the welding wire.
Ideal for high-amperage applications using CO2 or mixed gases, the Tweco 10401130 excels in environments where reliability is non-negotiable. Whether welding thick plate steel, pipe, or heavy machinery components, this gun delivers consistent arc stability and thermal management. The ergonomic handle, while substantial, is balanced to minimize wrist strain during long welding shifts. By choosing the Tweco Classic No. 4 with a Miller plug, fabricators get the best of both worlds: the legendary toughness of a Tweco gun combined with the versatility of their existing Miller power sources.
| Additional Information |
|---|
| Amperage:400 |
| Length:10 ft |
| Back End:Miller |
| Brand:Tweco |
| Item:Gooseneck |
| Torch Type:Air Cooled |
| Duty Cycle:60% @ 400A (CO2) |
| Wire Size Capacity:Up to 5/64" (2.0mm) |
| Connection Type:Miller Style |
| Series:Classic No. 4 |
| Cooling Method:Air Cooled |
| Packaging Description:pack of 1 |
