Canadian owned and operated.
The Miller Multimatic 255 (907840) represents a leap forward in integrated welding technology, combining MIG, Stick, and DC TIG capabilities into a high-efficiency inverter power source. Designed for light manufacturing, fabrication, and MRO applications, this machine delivers a rated output of 230 Amps at 60% duty cycle, with a maximum output of 350 Amps. It is engineered to run on single-phase 208/240V input power, making it compatible with standard industrial and garage power setups.
Technicians will appreciate the inclusion of the MDX™-250 MIG gun. This gun is ergonomically designed to reduce fatigue and features the AccuLock™ S consumable system, which aligns the contact tip perfectly with the liner to minimize burn-backs and erratic feeding. The machine's drive system is robust, utilizing large, reversible drive rolls that provide consistent wire feeding for wire diameters ranging from .023 to .045 inches. For aluminum welding, the Multimatic 255 is directly compatible with Spoolmatic® spool guns and push-pull guns, offering further versatility without complex add-ons.
The user interface is a major differentiator. The 7-inch color LCD screen provides high-resolution feedback and simplifies the setup process through Auto-Set™ Elite. This system allows users to dial in parameters based on specific joint configurations and material types. Additionally, the machine supports "Program Mode," enabling the storage of four independent parameter schedules for each process. This ensures repeatability for recurring jobs. Fan-On-Demand™ technology manages cooling efficiently, reducing noise and minimizing the amount of airborne contaminants pulled through the machine.
Technical Highlights:
| Additional Information |
|---|
| Brand:Miller |
| Weld Process:Multi-Process |
| Voltage:208/230 V |
| Amperage:350 |
| Duty Cycle:60% |
| Process Type:Multi-Process |
| Input Voltage:208 V, 240 V |
| Amperage Range:20 - 350 A |
| Wire Feed Speed:50 - 800 ipm |
| Net Weight:84 lb (38 kg) |
| Display:7-inch Color LCD |
| Max Open Circuit Voltage:87 VDC |
| Compatible Wire Diameter:0.023" - 0.045" (Solid), 0.030" - 0.045" (Flux Cored) |
| Item:Welding Machine |
| Packaging Description:1of1 |
Used this product on the job? Tell other welders how it held up.
Everything I wanted in a welder in one package!
I wanted a machine that was capable of performing all welding processes and could operate off of house current (at least until I can upgrade to 240v), and this one checks all the boxes. I'm hoping to fix things, make some art, and start a small side business. Having my own welder is a really big step in that direction and one I've been hoping to make for about the last twenty years. Lastly, the school I attended, the shop that I used to work for, and all of the most serious businesses that I've encountered were welding is a primary function all use Miller machines, so when I finally decided to pull the trigger myself, there was no doubt in my mind that I would settle for anything less. I'm really excited to finally join the Miller family, myself!
I would never purchase another Miller product.
I am not happy at all!
I would buy again
Great welder
The best welder for the DYI projects
The best welder for multi-purpose use as a DYI projects. Great value for the cost in an all-around welder backed by the best company known for welding in the industry.
Great for Learning
I'm a student, a beginner welder, the 215 is much more proficient in helping me learn proper welding skills.
I have had more than one Miller machine in my 72 years.
Use for farm repair, it's a wonderful machine, I love Miller welders.
Definitely worth the money
Really great machine. It took awhile to save up for it but I would buy it again
Miller welders
Nice light easy to move. The 15' MiG gun is very light and easy to maneuver around the work. Can't wait to see how the long duty cycle will help complete my projects in a timely manner. I have 5 miller machines and they all delivered above and beyond my expectations.
I would buy this again, with the quality build, I won't need
I love this welder; it makes me look like I know what I am doing. Auto set is always correct; it takes all of the calculation and guesswork out of the process.
Awesome welder!!!
I am new to welding. I have used different welders, and nothing else welds this well. The autoset makes it look as though I know what I am doing. Perfect welds right out of the box. Baker's Gas was awesome to deal with, quick delivery, and excellent service. I wanted something that would last me for many years, and I think I have made the right choice.
