Processes
- MIG (GMAW)
- Flux-cored (FCAW)
Steel MIG guns
Miller MDX-100 MIG Gun
The MDX-100 is Miller's current light industrial 100-amp gun path for the Millermatic 142 and Millermatic 211 PRO class of machines.
Light industrial
Steel
current catalog
Wire Capacity
.030 - .035 in. (0.8 - 0.9 mm) standard wire size
Cable Lengths
10 or 15 ft.
Compatible Machine Paths
Millermatic 142
Open support pageMillermatic 211 PRO
Open support pageMultimatic 215 PRO
Open support pageMultimatic 220 AC/DC
Open support pageLifecycle and Replacement Notes
- Current replacement direction for M-10/M-15 and M-100/M-150 light industrial gun paths.
- Uses MDX standard-duty nozzles, contact tips, diffusers, liners, and power pin caps.
Gun Models
| Model | Stock # | Cable | Output | Wire size | Consumables | Buy |
|---|---|---|---|---|---|---|
| MDX-100 | 1770028 | 10 ft. (3 m) | 100 A | .030 - .035 in. (0.8 - 0.9 mm) | Standard duty | Buy link unavailable. |
| MDX-100 | 1770029 | 15 ft. (4.6 m) | 100 A | .030 - .035 in. (0.8 - 0.9 mm) | Standard duty | -- |
Consumables and Replacement Parts
| Item | Part # | Description | Category | Buy |
|---|---|---|---|---|
| Nozzle | NS-M1200B | 1/2 in. ID flush brass nozzle | Nozzle | -- |
| Nozzle | NS-M1200C | 1/2 in. ID flush copper nozzle | Nozzle | Buy link unavailable. |
| Nozzle | NS-MFLX | Gasless nozzle | Nozzle | -- |
| Tip | T-M023 | .023 in. MDX standard-duty contact tip | Contact tip | Buy link unavailable. |
| Tip | T-M030 | .030 in. MDX standard-duty contact tip | Contact tip | Buy link unavailable. |
| Tip | T-M035 | .035 in. MDX standard-duty contact tip | Contact tip | Buy link unavailable. |
| Tip | T-M045 | .045 in. MDX standard-duty contact tip | Contact tip | Buy link unavailable. |
| Tip | T-M047 | 3/64 in. MDX standard-duty contact tip | Contact tip | Buy link unavailable. |
| Diffuser | D-M100 | MDX-100 diffuser | Diffuser | Buy link unavailable. |
| Liner | LM1A-10 | 10 ft. MDX liner, .023-.025 in. wire | Liner | Buy link unavailable. |
| Liner | LMD2A-10 | 10 ft. MDX liner, .030-.035 in. wire | Liner | Buy link unavailable. |
| Liner | LMD3A-10 | 10 ft. MDX liner, .035-.045 in. wire | Liner | Buy link unavailable. |
| Power pin cap | 2200360 | .023-.030 in. MDX power pin cap | Power pin cap | -- |
| Power pin cap | 2200361 | .030-.035 in. MDX power pin cap | Power pin cap | -- |
| Power pin cap | 2200362 | .035-.045 in. MDX power pin cap | Power pin cap | -- |
| Kit | 1880272 | MDX-100 consumable kit, .023 in. wire | Consumable kit | -- |
| Kit | 1880273 | MDX-100 consumable kit, .030 in. wire | Consumable kit | -- |
| Kit | 1880274 | MDX-100 consumable kit, .035 in. wire | Consumable kit | -- |
Related Support Paths
Millermatic 142
Catalog-listed MDX-100 machine path.
Open support pageMillermatic 211 PRO
Catalog-listed MDX-100 machine path.
Open support pageMiller M-10/M-15 Gun
Legacy gun family replaced through the M-Series to MDX-100 path.
Open support page
Source: Miller Electric 2026 Full-line Catalog (source-bf756b1d2b74, page 23). Amazon links are kept separate from compatibility data.