When it comes to industrial fabrication, few tools command the respect and loyalty of the Tweco Classic No. 4 MIG Gun. For decades, this 400-amp air-cooled torch has been the definition of reliability in shipyards, structural steel shops, and manufacturing plants across the globe. The SKU 1040-1103 represents the classic configuration that welders know and trust: a robust 15-foot cable, a high-amperage rating, and the signature Tweco connection that fits a vast array of power sources.
The Classic No. 4 is built to withstand the harshest environments. Its heavy-duty construction features a durable coaxial cable that resists abrasion, cuts, and burns, ensuring a long service life even on cluttered and rough shop floors. The air-cooled design is simple yet effective, utilizing high-quality copper components to dissipate heat efficiently, allowing for a 60% duty cycle at 400 amps using CO2 gas. This makes it an ideal choice for running flux-cored wires or heavy solid wires in high-production settings.
One of the primary reasons for the Classic 4's enduring popularity is its serviceability. Josef Gas knows that downtime is costly, and the Tweco Classic series is designed to be completely field-repairable. From the trigger switch to the gooseneck, every component can be replaced quickly using standard tools. The gun utilizes the widely available Tweco 14 Series contact tips, 24 Series nozzles, and 54 Series diffusers, meaning you will never struggle to find consumables. Whether you are welding thick plate steel or performing general fabrication, the Tweco Classic No. 4 provides the consistent arc and comfortable handling required for top-tier results.
Key Benefits for the Shop:
| Additional Information |
|---|
| Brand:Tweco |
| Amperage:400 |
| Length:15 ft |
| Back End:Tweco |
| Wire Size:0.035" - 0.045" |
| Cooling Method:Air Cooled |
| Torch Type:MIG Gun |
| Duty Cycle:60% @ 400A |
| Process Type:MIG (GMAW), Flux Cored (FCAW) |
| Handle Style:Classic Curved |
| Cable Type:Coaxial |
| Packaging Description:pack of 1 |
