10401911 - Tweco Classic No. 4 MIG Gun, 400A, 20ft, Tweco Connection, 1/16 Wire

Product Overview

The Tweco Classic No. 4 MIG Gun (Part Number 1040-1911) is a heavy-duty, air-cooled semi-automatic welding torch designed for high-amperage industrial applications. Rated at 400 Amps at a 60% duty cycle using CO2 gas, this gun is engineered to handle the rigors of structural steel fabrication, heavy equipment manufacturing, and general industrial welding. This specific configuration features a 20-foot (6.1-meter) cable assembly, providing significant reach for working on large weldments without moving the wire feeder.

The gun comes equipped with a standard Tweco-style rear connection, ensuring compatibility with a vast range of wire feeders and power sources that utilize the Tweco adapter system. It is factory-configured for 1/16-inch (1.6mm) welding wire, making it ready for heavy deposition applications immediately out of the box. The Classic No. 4 utilizes the widely available Tweco 14 Series contact tips, 24 Series gas nozzles, and 54 Series gas diffusers, simplifying inventory management for consumables.

Constructed with a rugged handle and a metal-jacketed conductor tube, the Classic No. 4 is built to resist impact and heat. The cable assembly is designed for flexibility while maintaining durability against cuts and abrasion. Maintenance is straightforward, with a design that allows for quick replacement of the trigger, switch, and cable components, minimizing downtime in production environments.