The Tweco Classic No. 4 MIG Gun (SKU: 1040-1927) represents the pinnacle of air-cooled welding torch design for heavy-duty industrial applications. Renowned globally as the standard by which other MIG guns are measured, the Classic No. 4 is engineered to deliver consistent performance in the most demanding fabrication environments. This specific configuration features a 10-foot cable assembly and a Lincoln-style rear connection, making it an immediate drop-in replacement or upgrade for compatible Lincoln Electric wire feeders and power sources.
Rated at 400 Amps at a 60% duty cycle using CO2 gas, this gun is capable of handling a wide range of wire diameters, typically configured for .035" to .045" (0.9mm - 1.2mm) wire out of the box, but adaptable for larger sizes with the appropriate liner and contact tip changes. The air-cooled architecture simplifies setup by removing the need for water cooling systems, reducing potential failure points and maintenance overhead. The gun utilizes Tweco's widely available consumables, including the 14 Series contact tips, 24 Series gas nozzles, and 54 Series gas diffusers, ensuring that replacement parts are always easy to source and cost-effective.
The construction of the Classic No. 4 is robust, featuring a heavy-duty metal-jacketed conductor tube that resists damage from drops and impacts. The connection pin is precision-machined to ensure optimal electrical conductivity and gas flow when connected to Lincoln equipment. For procurement specialists and facility managers, choosing the Tweco Classic No. 4 means investing in a tool with a proven track record of longevity, ease of repair, and operator acceptance.
| Additional Information |
|---|
| ----- new values below ---- |
| Cable Length:10 ft |
| Rear Connection:Lincoln |
| Cooling Method:Air Cooled |
| Duty Cycle:60% |
| Wire Size Capacity:0.035" - 0.045" |
| Series:Classic No. 4 |
| Process Type:MIG (GMAW), Flux Cored (FCAW) |
| Brand:Tweco |
| Amps:400 |
| Packaging Description:1 Per Ea |
