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10471027 - Tweco WeldSkill 400 MIG Gun - 15ft - Miller Connection - 400A

Packaging: pack of 1
$808.30/EA $586.24/pack of 1 only $586.24/EASave 27%

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OVERVIEW

Weld Comfortably All Day with the Tweco WeldSkill 400

If you are pushing heavy wire all day, you need a gun that can take the heat without wearing you out. The Tweco WeldSkill 400 MIG Gun is built exactly for that purpose. With a 400-amp rating, this torch is a beast when it comes to laying down heavy beads on thick plate, but it doesn't sacrifice comfort. The handle features an ergonomic, oval-shaped design that fits naturally in your hand, reducing grip fatigue during those long welds. The trigger is responsive and positioned perfectly to prevent finger cramping.

This model comes with a 15-foot cable, giving you plenty of reach around large weldments without constantly moving your feeder. The connection is a standard Miller-style plug, so if you are running a Miller machine, you can swap this gun in seconds—no adapters or rewiring needed. Just plug it in, tighten the locking nut, and you are ready to burn wire. The cable support at the handle uses a ball-and-socket design, which is a huge advantage; it lets the cable swivel and move with you, preventing that annoying "fighting the cable" feeling when you are trying to manipulate the torch.

One of the best things about this gun is that it uses standard Tweco consumables. You probably already have 14-series tips and 24-series nozzles in your toolbox or shop crib. You won't have to hunt for specialized, expensive parts. The metal gooseneck is tough and can be rotated 360 degrees, which is a lifesaver when you need to get into a tight corner or weld overhead. The heavy-duty nozzle stays secure but is easy to remove for cleaning spatter.

Whether you are working on farm equipment, structural beams, or general fabrication, the WeldSkill 400 gives you the power you need with the reliability Tweco is famous for. It’s a solid, no-nonsense tool that helps you get the job done right, shift after shift. Stop struggling with overheating guns or stiff cables and upgrade to a torch designed for the professional welder.

Additional Information
Amperage:400
Length:15 ft
Back End:Miller
Wire Size:0.035" - 0.045"
Brand:Tweco
Item:Gooseneck
Torch Type:MIG Gun, Air Cooled
Connection Type:Miller Direct Plug
Amperage Rating:400A
Duty Cycle:60% @ 400A (CO2), 60% @ 300A (Mixed Gas)
Consumable Compatibility:Tweco 14 Series Tips, Tweco 24 Series Nozzles, Tweco 54 Series Diffusers
Applications:Heavy Equipment, Structural Steel, Fabrication, Shipbuilding
Packaging Description:pack of 1

INCLUDED

  • 1 x Tweco WeldSkill 400A MIG Gun (15ft)
  • 1 x Miller-Style Rear Connector
  • 1 x Standard Contact Tip (.035" installed)
  • 1 x Nozzle (Standard 5/8" bore)
  • 1 x Diffuser
  • 1 x Liner (pre-installed for .035-.045 wire)
  • 1 x Owner's Manual

APPLICATIONS

  • Structural Steel Fabrication
  • Heavy Equipment Manufacturing and Repair
  • Shipbuilding and Offshore Construction
  • General Industrial Fabrication
  • Trailer Manufacturing
  • Automotive Frame Repair

FAQ

This gun is equipped with a Miller-style back-end connection. It will fit most Miller wire feeders and integrated MIG machines that accept a standard Miller direct plug.

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

The WeldSkill 400 is rated at 400 Amps at 60% duty cycle when using CO2 gas, and 300 Amps at 60% duty cycle when using mixed gases (Argon/CO2).

Yes, it comes pre-installed with a conduit liner suitable for .035" to .045" (0.9mm - 1.2mm) welding wire.

Yes, the conductor tube (gooseneck) can be rotated 360 degrees to help access difficult joints.

Yes, the WeldSkill series features an ergonomic oval handle design and a ball-and-socket cable support to minimize operator fatigue.

For .035-.045 wire, the standard replacement liner is the Tweco 44-3545-15 (or similar 44-series liner cut to length).

The Tweco WeldSkill 400 is an air-cooled MIG gun.