10101112 - Tweco Classic 1 MIG Gun 180A 12ft .035 Tweco Connection

Technical Specifications and Performance

The Tweco 1010-1112 Classic No. 1 is a semi-automatic, air-cooled GMAW (MIG) welding gun rated for 180 Amps at 60% duty cycle when using CO2 shielding gas. This rating makes it an ideal choice for fabrication involving mild steel, stainless steel, and aluminum applications where maneuverability and lower amperage ranges are required. The gun assembly features a 12-foot (3.6 meter) cable length, providing adequate reach for bench work and small assembly jigs while maintaining optimal wire column strength for consistent feeding.

Consumable Compatibility:
This gun utilizes the industry-standard Tweco 11-Series contact tips and 21-Series nozzles. The diffuser and nozzle relationship is adjustable, allowing the operator to set the contact tip recess or stick-out according to the welding procedure specification (WPS). The gun comes factory-installed with a liner suitable for .030"-.035" wire, specifically configured here for .035" applications. The conductor tube (gooseneck) is rotatable, allowing for better access in tight joints or out-of-position welding.

Construction and Backend:
The cable assembly utilizes high-quality copper stranding to minimize voltage drop and heat buildup. The outer jacket is resistant to cuts, abrasion, and weld spatter. The backend connection is a standard Tweco connector (often referred to as a No. 4 backend on larger guns, but scaled for the No. 1), which includes the power pin and control leads. The trigger leads are simple 2-wire configurations compatible with most contactor circuits. The mechanical connection is robust, ensuring positive electrical contact to the power pin to prevent arcing at the feeder.

Maintenance and Serviceability:
Designed for the professional industrial environment, the Classic No. 1 is completely serviceable. The handle case separates easily for access to the trigger switch and cable connections. The liner is replaced from the backend, and the jump liner design in the backend (if applicable to specific feeder setups) ensures smooth wire transition. This gun is engineered to provide a stable arc and consistent wire feed speed, critical for maintaining weld quality in production environments.