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10301136 - Tweco Classic 3 MIG Gun, 300A, 15ft, Miller Plug (.035-.045)

Packaging: pack of 1
$1,481.77/EA $1,074.69/pack of 1 only $1,074.69/EASave 27%

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OVERVIEW

The Legend Returns: Tweco Classic No. 3 MIG Gun

For decades, professional welders have sworn by the Tweco Classic No. 3. It isn't just a tool; it's the industry standard for a reason. If you are running a Miller welder and need a gun that can take a beating and keep on laying beads, the Tweco 10301136 is your answer. This 300-Amp beast is built to withstand the toughest shop environments, from dropping it on concrete to dragging it over steel plates.

This model comes with a 15-foot lead, giving you the freedom to move around large weldments without constantly dragging your feeder. The Miller-style back end means you can plug it directly into your Millermatic or Miller wire feeder without hunting for adapters. It's ready to run right out of the box, set up for .035" to .045" wire, which covers the vast majority of structural and fabrication work.

Why do welders love the Classic 3? It's the feel. The handle is balanced and comfortable, reducing hand fatigue during those long shifts. Plus, it uses standard Tweco consumables—tips and nozzles you can find in almost any weld shop or supply store in the country. You won't be stuck waiting for proprietary parts. Whether you are welding heavy equipment, structural beams, or just doing serious fabrication, trust the gun that built the industry.

Why Choose the Classic 3?

  • Proven Reliability: A design that has stood the test of time in the harshest industries.
  • Universal Consumables: Uses standard Tweco parts found everywhere.
  • Perfect Fit: Direct plug-and-play for Miller machines.
  • Built Tough: Heavy-duty cable and impact-resistant handle.
  • Comfort: Ergonomic design that welders prefer for all-day use.
Additional Information
Brand:Tweco
Amperage:300
Length:15 ft
Back End:Miller
Wire Size:0.035" - 0.045"
Cooling Method:Air Cooled
Torch Type:MIG Gun
Connection Type:Miller Direct Plug
Amperage Rating:300A
Cable Length:15 ft
Duty Cycle:60% @ 300A
Wire Diameter:0.035", 0.045"
Consumable Compatibility:Tweco 14 Series Tips, Tweco 24 Series Nozzles, Tweco 54 Series Diffusers
Applications:General Fabrication, Production Welding, Heavy Equipment Repair
Packaging Description:pack of 1

INCLUDED

  • 1 x Tweco Classic No. 3 MIG Gun (300 Amp)
  • 1 x 15 ft. Cable Assembly
  • 1 x Miller Style Rear Connection
  • 1 x Pre-installed Consumables Kit (Contact Tip, Nozzle, Diffuser)
  • 1 x Liner (Pre-installed for .035-.045 wire)
  • 1 x Owner's Manual

APPLICATIONS

  • Industrial Fabrication
  • Structural Steel Welding
  • Heavy Equipment Manufacturing & Repair
  • Shipbuilding and Offshore
  • Automotive Production
  • General Maintenance and Repair (MRO)

FAQ

The Tweco Classic No. 3 is rated at 300 Amps at 60% duty cycle when using CO2 gas, and typically around 250 Amps when using mixed gases.

Yes, this specific model (10301136) features a Miller-style backend connection, making it compatible with most Millermatic machines and Miller wire feeders that accept a standard MIG gun plug.

This gun comes pre-configured with a liner and contact tip suitable for .035" to .045" (0.9mm - 1.2mm) welding wire.

The Tweco Classic No. 3 is an air-cooled MIG gun, meaning it relies on ambient air and shielding gas flow to dissipate heat.

It uses standard Tweco 14 Series contact tips, 24 Series gas nozzles, and 54 Series gas diffusers.

This model features a 15-foot (approximately 4.5 meters) cable assembly.

Yes, the liner is replaceable. You can install different liners to accommodate smaller wires (like .023" or .030") or larger wires (up to 1/16"), as well as Teflon liners for aluminum.

Yes, the Classic No. 3 features a serviceable handle design, allowing for easy replacement of the trigger switch and other internal components.