10201112 - Tweco Classic No. 2 MIG Gun, 200 Amp, 12 ft, Tweco Connection

Technical Specifications and Performance

The Tweco 1020-1112 Classic No. 2 MIG Gun is an air-cooled, semi-automatic GMAW torch engineered for performance and longevity. Rated at 200 Amps (CO2) and operating at a 60% duty cycle, this gun is optimized for use with wire diameters ranging from .023" to .045" (0.6mm - 1.2mm), coming pre-configured typically for .035" (0.9mm) wire. The 12-foot cable assembly features a heavy-duty copper conductor bundle that ensures efficient current transfer with minimal voltage drop, crucial for maintaining consistent weld parameters.

Key Technical Features:

• Connection: Standard Tweco back-end connection (No. 4 style power pin) fits directly into Tweco-adapted feeders.
• Consumables: Utilizes the robust 14 Series contact tips (e.g., 14-35) and 22 Series gas nozzles (e.g., 22-50), along with 32 Series insulators. These consumables are designed for quick changeovers, minimizing downtime.
• Liner System: The gun accepts standard Tweco liners (42 series), which are easily replaceable to suit different wire types and diameters.
• Cooling: Air-cooled design relies on ambient air and shielding gas flow to dissipate heat, eliminating the need for water coolers and hoses.

The gun's construction features a metal-jacketed conductor tube (gooseneck) that can withstand high heat and spatter. The trigger mechanism is a simple, reliable mechanical switch designed for millions of cycles. Maintenance is straightforward; the entire gun can be disassembled with standard shop tools. The cable is protected by a durable outer jacket that resists cuts, burns, and abrasion. For professional welders seeking a reliable 200A torch that balances performance with low operating costs, the Tweco Classic No. 2 remains the superior choice.