The Tweco Classic No. 4 MIG Gun (1040-1105) represents the benchmark for air-cooled welding performance in industrial environments. Designed for durability and ease of maintenance, this 400-amp welding gun is engineered to handle the rigors of high-volume fabrication, shipbuilding, and heavy equipment manufacturing. With a generous 25-foot cable, it offers exceptional reach, allowing operators to move freely around large workpieces without constantly repositioning the wire feeder.
This specific configuration comes ready to weld with a setup optimized for .035" to .045" wire diameters, covering the most common range for structural steel applications. The gun features a standard Tweco backend connection, making it compatible with a vast array of wire feeders and power sources that utilize the Tweco-style adapter. The air-cooled design relies on heavy copper construction to dissipate heat effectively, ensuring a 60% duty cycle at 400 amps using CO2 shielding gas.
Maintenance managers appreciate the Classic No. 4 for its serviceability. The consumables—including the famous 14 Series contact tips and 24 Series nozzles—are widely available and easy to swap out. The mechanical cable connections are field-repairable, meaning a damaged cable doesn't necessarily mean buying a whole new gun. The rugged handle and heavy-duty spring strain reliefs at both the feeder and gun ends protect the internal cabling from kinking and abrasion, ensuring a long service life even in the toughest shops.
Key Features for Industrial Use:
| Additional Information |
|---|
| Brand:Tweco |
| Amperage:400 |
| Length:25 ft |
| Wire Size:0.035" - 0.045" |
| Back End:Tweco |
| Item:Accessory |
| Torch Type:MIG Gun (Air Cooled) |
| Cooling Method:Air Cooled |
| Duty Cycle:60% @ 400A |
| Connection Type:Tweco |
| Cable Length:25 ft |
| Wire Diameter:0.035", 0.045" |
| Applications:Heavy Equipment, Shipbuilding, Pipeline, Fabrication |
| Packaging Description:pack of 1 |
