10301113 - Tweco Classic No. 3 MIG Gun - 300A, 15ft, 1/16 Wire, Tweco Connection

Industrial Grade Tweco Classic No. 3 MIG Gun

The Tweco Classic No. 3 MIG Gun (SKU: 1030-1113) is a heavy-duty, air-cooled welding torch designed for professional industrial applications. Rated at 300 Amps at a 60% duty cycle using CO2 gas, this gun is engineered to withstand the rigors of high-volume manufacturing, structural steel fabrication, and heavy equipment repair. This specific configuration (315-116) comes equipped with a 15-foot cable assembly, providing significant reach for working around large weldments without moving the wire feeder constantly.

Distinctively, this model is pre-setup for 1/16-inch (1.6mm) welding wire, making it an excellent choice for heavy flux-cored arc welding (FCAW) or specific heavy-deposition MIG applications right out of the box. The gun features the renowned Tweco rear connection, which plugs directly into wire feeders equipped with a Tweco #4 adapter block. The backend connection is robust, ensuring positive electrical conductivity and secure gas flow.

Maintenance and consumable replacement are streamlined with the Classic No. 3. It utilizes the widely available Tweco 14 Series contact tips, 24 Series gas nozzles, and 34 Series gas diffusers. The conductor tube is protected by a heavy-duty metal jacket and electrical insulation, while the handle is designed for impact resistance. The cable assembly utilizes high-quality copper stranding for efficient current transfer and a durable outer jacket that resists cuts, abrasion, and oil. For shops standardized on Tweco consumables and requiring a reliable 300A solution for larger diameter wires, this gun is the optimal choice.

Technical Specifications

• Model: Classic No. 3 (No. 3-15-116)
• Amperage Rating: 300A (CO2) / 250A (Mixed Gas)
• Duty Cycle: 60%
• Wire Capacity: Set up for 1/16" (1.6mm); capable of running other sizes with liner/tip changes.
• Cooling: Air Cooled
• Rear Connection: Tweco Style