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10501173 - Tweco Classic 5 MIG Gun 500A 15ft Miller Connection

Packaging: 1 of each
$2,054.23/ea $1,489.88/1 of each only $1,489.88/eaSave 27%

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OVERVIEW

Tweco Classic 5 MIG Gun: The Industry Standard for 500A Welding

For decades, the Tweco Classic #5 MIG Gun has defined the standard for heavy-duty, air-cooled MIG welding. The model M515-116 brings this legacy of toughness to welders using Miller equipment, featuring a direct-connect Miller back end. Rated for a massive 500 Amps (using CO2), this gun is engineered to thrive in the most demanding fabrication shops, foundries, and construction sites where heat and harsh conditions are the norm.

The 15-foot cable length provides the versatility needed to access hard-to-reach joints without constantly moving the power source. The cable's robust outer jacket protects the copper stranding and liner from the inevitable wear and tear of industrial use. Inside, the gun is optimized for feeding larger diameter wires, specifically ranging from .045 inches to 1/16 inches. This makes it an exceptional choice for structural steel fabrication, heavy equipment repair, and any application requiring deep penetration and high metal deposition.

Key Features and Benefits

  • High Amperage Output: Delivers 500A performance, bridging the gap between standard air-cooled guns and water-cooled systems.
  • Miller Compatibility: Designed specifically with a Miller power pin for secure and reliable connection to your existing feeders.
  • Durable Consumables: Uses heavy-duty Tweco consumables that are designed to withstand high heat and reduce changeover frequency.
  • Ergonomic Design: The classic paddle-style handle and balanced weight distribution help minimize operator strain.

One of the standout advantages of the Tweco Classic series is its serviceability. Unlike disposable guns, the Classic #5 is completely rebuildable. The conductor tube (gooseneck) can be rotated or replaced, the liner is easily swapped out to match different wire types, and the trigger mechanism is designed for millions of cycles. By sticking to the proven design of the Classic #5, you ensure that your welding operations remain efficient, reliable, and ready for the heaviest tasks.

Additional Information
Brand:Tweco
Amperage:500
Length:15 ft
Back End:Miller
Wire Size:0.045", 1/16"
Item:Gooseneck
Cooling Method:Air Cooled
Series:Classic 5
Duty Cycle:60% @ 500A (CO2)
Gas Type:CO2
Cable Type:Coaxial
Packaging Description:1 of each
Front End:Tweco

INCLUDED

  • 1 x Tweco Classic #5 MIG Gun (500 Amp)
  • 1 x 15 ft. Cable Assembly with Miller Back End
  • 1 x Standard Consumable Setup (Contact Tip, Nozzle, Diffuser)
  • 1 x Liner (Installed, for .045" - 1/16" wire)
  • 1 x Trigger Connection Plug

APPLICATIONS

  • Structural Steel Fabrication
  • Heavy Equipment Manufacturing & Repair
  • Shipbuilding and Marine Construction
  • Railcar Manufacturing
  • General Heavy Fabrication
  • Tank and Vessel Welding

FAQ

The Tweco Classic #5 is rated at 500 Amps at 60% duty cycle when using CO2 gas. When using mixed gases (like Argon/CO2), the duty cycle rating is typically reduced.

Yes, this specific model (M515-116) comes with a Miller back end connection, making it compatible with most Miller wire feeders and integrated MIG machines.

This gun comes standard with a liner and contact tip setup for wire diameters ranging from .045" to 1/16".

The Tweco Classic #5 is an air-cooled MIG gun, designed to handle high amperages without the need for a water cooler.

It uses standard Tweco consumables: 15 Series contact tips, 24 Series nozzles, and 54 Series gas diffusers.

Yes, the liner is replaceable. You can install different liners to accommodate smaller wires (like .035") or aluminum wire (using a nylon liner), though this gun is best suited for heavy wire.

This model features a 15-foot cable assembly.

Yes, the trigger switch and almost all other components of the Tweco Classic #5 are field-replaceable.