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10401114 - Tweco Classic 4 MIG Gun, 400A, 20ft, Tweco Connection

Packaging: pack of 1
$2,103.08/EA $1,333.31/pack of 1 only $1,333.31/EASave 37%

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SKU: TWE1040-1114 Categories: ,

OVERVIEW

Tweco Classic No. 4 MIG Gun – The Industrial Standard

The Tweco Classic No. 4 MIG Gun is a legend in the welding industry, known for its durability, simplicity, and high performance in heavy-duty applications. Rated at 400 Amps at 60% duty cycle, this air-cooled gun is designed to handle the heat and physical abuse of structural steel fabrication, heavy equipment manufacturing, and shipbuilding. This specific configuration features a 20-foot cable, providing welders with the extra reach needed to work around large assemblies without constantly moving the wire feeder.

Equipped with a standard Tweco-style rear connection, this gun is compatible with a wide range of wire feeders and power sources that utilize the Tweco adapter system. The Classic No. 4 utilizes the widely available 14 Series contact tips, 24 Series gas nozzles, and 54 Series gas diffusers, making consumable management simple and cost-effective. Its metal-jacketed conductor tube and heavy-duty paddle handle ensure a long service life, even in the toughest shop environments.

Whether you are running solid wire with shielding gas or flux-cored wire, the Tweco Classic No. 4 delivers consistent wire feeding and arc stability. The 20-foot length is ideal for welders who need flexibility and mobility, reducing the need to reposition equipment. Trust the gun that has defined the industry standard for decades.

Additional Information
Amperage:400
Cable Length:20 ft
Cooling Method:Air Cooled
Connection Type:Tweco
Brand:Tweco
Series:Classic No. 4
Duty Cycle:60% @ 400A
Process Type:MIG (GMAW), Flux Cored (FCAW)
Wire Capacity:Up to 5/64" (2.0 mm)
Handle Type:Paddle Handle
Packaging Description:pack of 1

INCLUDED

  • Tweco Classic No. 4 MIG Gun Assembly (20 ft)
  • Contact Tip (Installed)
  • Gas Nozzle (Installed)
  • Gas Diffuser (Installed)
  • Conduit Liner (Installed)
  • Trigger Assembly

APPLICATIONS

  • Structural Steel Fabrication
  • Heavy Equipment Manufacturing
  • Shipbuilding and Offshore
  • General Industrial Fabrication
  • Tank and Vessel Welding
  • Pipeline Welding

FAQ

The Tweco Classic No. 4 is rated at 400 Amps at 60% duty cycle when using CO2 gas.

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

This specific model features a 20-foot cable assembly.

It has a standard Tweco-style rear connection, which fits wire feeders equipped with a Tweco adapter.

The Tweco Classic No. 4 is an air-cooled MIG gun.

Yes, the Classic No. 4 is suitable for both solid wire (MIG) and flux-cored (FCAW) welding processes, provided the correct liner and rollers are used.

The Classic No. 4 can generally handle wire diameters up to 5/64" (2.0 mm) with the appropriate liner and contact tip.

Yes, the trigger and most other components of the Tweco Classic No. 4 are field-repairable and replaceable.