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

$2,103.08/ea Save 19% ($401.63)$1,701.45/ea

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OVERVIEW

Heavy-Duty 400A MIG Welding Gun

Maximize your welding productivity with the Tweco Classic No. 4 MIG Gun, configured with a 20-foot cable and a Tweco rear connection. This air-cooled torch is engineered for professional welders who demand reliability and performance. With a rating of 400 Amps at 60% duty cycle using CO2 gas, it is perfectly suited for high-amperage welding on mild steel, stainless steel, and aluminum applications.

The Classic No. 4 features a rugged design that includes a durable cable assembly, a comfortable paddle handle, and a 60-degree conductor tube. The 20-foot cable length offers significant advantages in large work cells, allowing operators to access joints that are further away from the power source. The gun is fully field-repairable, meaning downtime is minimized if a component needs replacement. It comes ready to weld with a liner, contact tip, and nozzle pre-installed.

Key Features:

  • High Amperage Capacity: 400A rating handles thick materials and high deposition rates.
  • Extended Reach: 20ft cable allows for greater mobility around large workpieces.
  • Universal Compatibility: Tweco connection fits most standard feeders with appropriate adapters.
  • Easy Maintenance: Uses standard Tweco consumables found in almost every welding shop.

Invest in the Tweco Classic No. 4 for a proven welding solution that combines traditional durability with the performance required for modern fabrication tasks.

Additional Information
Amperage:400 A, 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
Length:20 ft
Front End:Tweco
Back End:Tweco
Item:MIG Gun
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.

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