D/F Machine Specialties Water Cooled BIG MIG NCM-15 MIG Torch

W/C "BIG MIG®" 1000 Amp Machine Barrel HTM15

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Accessories More Info


D/F Machine Specialties® has been committed to producing the finest American made welding products available on the market today. D/F's MIG (Gas Metal Arc Welding) & TIG (Gas Tungsten Arc Welding) torches have been used exclusively with welding automation equipment by Lincoln Electric, Miller Electric, Linde/ESAB, and Thermadyne for over 40 years. For automated welding systems, hard automation, high deposition, high current density, and large wire diameters that require preheat and high amperages, a D/F heavy duty water-cooled weld automation torch is ideal and has been used for large diameter aluminum welding, metal build up, hardbanding, hardfacing, metal spray applications, and pipeline construction, or even retrofit with a flux delivery system for sub-arc applications, and applications where carbide is added like with the Welding Alloys Multi Surfacer: custom designed automated welding equipment. Our torches have been designed, tested, used and continuously upgraded for more than 40 years, in almost every type of environment. The flexibility of D/F Machine Specialties® remote mount or robotic welding torches makes them ideal for all fabrication applications. Our torches are suitable for GMAW, pulsed GMAW and FCAW processes. They provide a wide range of travel, wire feed, and oscillation parameters to accommodate various materials, thicknesses and joint designs. Due to the fact that there are varying requirements for each MIG welding application, this series of D/F torches is tailored to fit each of these unique applications and falls under the "specialties", hence the name D/F Machine Specialties®, and requires a 2-3 week delivery upon receipt of a purchase order. We highly recommend that customers also purchase a backup torch to reduce downtime due to the fact that these are custom torches and have a 2-3 week delivery upon receipt of order.

The fully Water-Cooled-to-the-Tip remote mount 1000 Amp BIG MIG® (GMAW) models NCM15 & HTM15 machine torches are for high current single arc welding. If you are using the Linde ST-12, Guild ST-12 or Binzel AUT 750 and feel the need to have a larger, more robust torch that can carry more amperes with more water-cooling, the 1000 Amp BIG MIG® is the torch for you. The BIG MIG® can plug remotely into the Lincoln Electric NA-5 & NA-5R, LF-72, LF-74, Power Feed® 84, ESAB Aristo, MIGMaster, Duradrive, MIG 4 HD, and Miller wire feeders and sub-arc machines. With the use of the D/F sub-arc nozzle thread seals these heavy duty MIG water-cooled torches can be converted and used as sub arc torches. Because of the robust design of the torch and the water-cooling on the body, nozzle and tip, downtime and consumable cost can be greatly reduced in the submerged arc process (SAW). With the various models available, an automated MIG torch selection may be made to suit individual automated welding system requirements.

The “BIG MIG®” 1000 Amp High Current Machine Barrel is recommended for mechanized welding applications where production demands the maximum durability and quality for mechanized gas metal arc welding. The model NCM15 as provided will accommodate 4” slip-in current tips fastened by a collet action nut. The model HTM15 will accommodate 7/16“ threaded current tips by utilizing a tip adapter nut. The water-cooled nozzle accepts threaded gas nozzles ranging from 3/4” through 1-1/4” inner diameter. This barrel is primarily for wire diameters from 1/16” through 7/32” (1.6mm through 5.6mm). Maximum current capacity applicable to the models NCM15/HTM15 is 1000 amperes. Remote mounting is accomplished by an insulated mounting bracket and utilizing a casing/conduit connected by an adapter to the torch and a feeder adapter to the wire drive.

The “BIG MIG®” has two Water Out & Power Cables, increasing the continuous duty cycle rating to 1000 amps. There are also two lugs on the body of the BIG MIG® torch that can accept two to four 4/0 cables. These ratings are, however, dictated by the wire size which determines the appropriate contact tip.

The D/F torch is famous for the fact, that if it is chilled properly, the welder can grab the chrome front water-cooled barrel (not the copper gas nozzle/cup) of the torch with their bare hand and it will be cold to the touch seconds after welding. With the proper chiller, this can be done even after a 4 hour arc time. Make certain the cooling water supply is at least the minimum flow rate of 1 gallon per minute (for each inner body), at 40 psi (80 psi maximum) with a 6 gallon reservoir and a recommended 30,000 BTU/hr cooling capacity. Gun ratings are affected by shielding gas used, arc time, cooling time and inlet water temperature. Water outlet temperature should not exceed 27°C (80°F). The torch’s water out & power cable is not cooled until the coolant has gone through the torch and out the water out & power cable. If water is not flowing through the D/F torch for at least 1 minute prior to striking an arc, when you apply the power and water hits the “hot” water/out & power cable, you will generate steam. Steam can damage the torches internals in seconds causing a leak. It can also blow out the torches water/out & power cable. A flow switch can be installed after the return line ensuring that coolant is present at the return line prior to striking an arc. When High-Deposition GMAW, high current density, high amperages, preheat, or extended periods of arc time are used, a refrigerated liquid chiller with a larger reservoir is required. Precise temperature control maintains the cooling at a constant 13°C (55°F) temperature, thus prolonging the life of the welding equipment and more specifically extending the service life of the gas nozzle and current tip. D/F Machine Specialties® does not manufacture or sell chillers, we only recommend them. Click here to see our recommended chillers.

Each D/F Machine Specialties® welding gun is fully assembled and ready to install. In order to make the installation complete, the code number, wire size, wire feeder make/model (Lincoln wire feeders, Miller wire feeders, Tweco wire feeders, ESAB wire feeders, & EURO Quick Disconnect wire feeders), and inlet (as needed) must be specified when ordering. If special welding tools or accessories other than those listed previously are required, please consult with the factory. Get the right feeder adapter connection to fit your MIG wire feeder.


  • Water-Cooled Inner Body & Nozzle
  • Heavy-Duty Construction for Long-Lasting Durability
  • Small Frontal Area for Hard-to-Reach Locations
  • Withstands Extreme Conditions - 900° Preheat, 1000 Amps
  • Torch Longevity - Years vs. Months

Model Explanation

  • NCM - Normal Duty, Collet Action (Slip-in Tip), Machine Barrel
  • HTM - Heavy Duty, Threaded Tip, Machine Barrel

Model Specifications

NCM15, HTM15 1000 amps 11.8 lbs 1 gallon/min .030"-5/32" (.8m-4mm) Hard/Cored,
3/64"-1/4" (1.2mm-6.5mm) AL

Barrel Dimensions

NCM15, HTM15 16" 2.750"

Ordering Information

Complete Barrel Only

NCM15, HTM15 11620

Complete Assemblies

2 Ft. 3 Ft. 4 Ft. 5 Ft. 6 Ft. 7 Ft. 8 Ft. 10 Ft. 12 Ft. 15 Ft.
NCM15, HTM15 11622 11623 11624 11625 11626 11627 11628 11629 11630 11631

Manuals & Downloads

Instruction Manuals

NCM15, HTM15 750

CAD Files & Drawings

NCM15, HTM15 11620 11620 11620

Other Documents

Choosing the Proper Chiller
for Your Application
Torch Connection Options
W/C BIG MIG® Machine Barrel

Utility Station #45188 - Dual Power Cable

45188 Utility StationThe D/F Utility Station is required for all D/F torch installations. Typical modern torch setups utilize a unitized cable assembly with a power pin. D/F torches take an alternative approach to the setup. The torches use a separate gas hose, water-in hose, Water Out & Power Cable, and casing/conduit. When one cable goes bad it is simply replaced instead of attaching an entire new unitized cable assembly; a huge cost saver! This is also where the D/F Utility Station comes into play. The gas hose, water-in hose, and Water Out & Power Cables are interfaced with the customer's existing lines via the Utility Station. The D/F torch leads plug into the front (see right) of the Utility Station. Into the back (see below) of the Utility Station go the customer's utilities. Read more on the D/F Utility Station product page.

For more information on proper use of the D/F Utility Station, and to see the various torch connection options, please download the Torch Connection Options one-sheet.

D/F Utility Station #45188D/F Utility Station #45188

Threaded Current Tips

Threaded Tips
(Tip provides 1/8" set back)
Hard .035" (.9mm) 15116
.045" (1.2mm) 15117
.052" (1.2mm) 15121
1/16" (1.6mm) 15118
5/64" (2mm) 15119
3/32" (2.4mm) 15120
7/64" (2.8mm) 15122
1/8" (3.2mm) 15105
5/32" (4mm) 15150
Threaded Tips
(Tip provides 3/8" set back)
Cored .035" (.9mm) 15101
.045" (1.2mm) 15106
.052" (1.2mm) 15112
1/16" (1.6mm) 15107
5/64" (2mm) 15108
3/32" (2.4mm) 15109
7/64" (2.8mm) 15110
1/8" (3.2mm) 15111
5/32" (4mm) 15113
Threaded Tips
(Tip provides 1/8" set back)
Aluminum 3/64" (1.2mm) 15126
1/16" (1.6mm) 15125
5/64" (2mm) 15087
3/32" (2.4mm) 15148
1/8" (3.2mm) 15123
5/32" (4mm) 15151