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Millermatic® 255

Millermatic® 255
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Issued April 2024 • Index No. DC/12.8 Quick Specs Industrial Applications General fabricators Contract welding services Plant maintenance shops MIG (GMAW) Pulsed MIG (GMAW-P) Flux-cored (FCAW) MIG Power Source, Wire Feeder and Gun Package Input Power Auto-Line™ 208– 240 V, single-phase Rated Output 230 A at 25.5 V, 60% duty cycle Amperage Range 20 –350 A Net Weight Machine only: 84 lb. (38 kg) Machine with running gear: 148 lb. (67 kg) Easy to Use. Versatility. Portability. Built for professionals in the light manufacturing or fabrication segment who want a smaller, versatile welder with intuitive setup to increase efficiencies and productivity. This 250-amp inverter welder is easy to use for faster uptime and performance. The versatility of this welder to be integrated on running gear, makes it very easy to move around a work cell or it can be quickly disconnected from the running gear enabling portability, making it easier to integrate into a work cell or work in confined spaces. Quick and easy setup CAPABILITIES MIG, pulsed MIG, push-pull and spool gun capabilities Machine only Portability MACHINE ONLY Machine with running gear Easily integrates into a work cell Heavy-duty aluminum two-drive-roll system Welder is warrantied for three years, parts and labor. Gun warrantied for 90 days, parts only. Equipment Sales US and Canada An ITW Welding Company 1635 West Spencer Street P.O. Box 1079 Appleton, WI 54912-1079 USA Phone: 866-931-9730 FAX: 800-637-2315 International Phone: 920-735-4554 International FAX: 920-735-4125

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Millermatic 255 Features and Benefits ® Easy to Use Pulsed MIG setup screen Connection screen for MIG process using C10 gas Easy-to-understand interface with 7-inch color LCD display ensures proper machine setup and parameter selection, reducing setup time and increasing weld time. • Quick-access backlit Auto-Set and Pulse buttons above the LCD display illuminate when active. • Soft-key buttons below the display change function depending on which screen is displayed. Makes setup or change quick, easy and intuitive. • Large text for easier readability. • Intuitive connection setup images. •...

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Millermatic 255 Features and Benefits ® Capabilities include MIG, pulsed MIG and flux-cored welding. CAPABILITIES Compatible with push-pull MIG guns. Increases productivity by allowing the use of 12-inch wire spools versus a spool gun’s 4-inch spools. Reduces downtime changing wire spools. Pulsed MIG welding delivers higher quality welds for ALL welders. • Lower heat input for less distortion on thin materials and better puddle control on out-of-position welds. • Less spatter minimizes post weld grinding and rework allowing more welding time. • Perform welding applications that couldn’t be...

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Specifications (Subject to change without notice.) Welding Amperage Range 20 –350 A Rated Output 230 A at 25.5 V, 60% duty cycle Amps Input at Rated Output, 50/60 Hz 208 V 240 V KVA KW 44.0 Wire Feed Speed 50–800 ipm (1.3–20.3 m/min.) Wire Type and Diameter Solid/stainless steel: .023–.045 in. (0.6–1.2 mm) Flux-cored: .030–.045 in. (0.8–1.2 mm) Aluminum: .035–.047 in. (0.9–1.2 mm) Machine only 84 lb. (38 kg) Machine with running gear 148 lb. (67 kg) Machine with running gear H: 32 in. (813 mm) W: 13.75 in. (349 mm) D: 45 in. (1,143 mm) Certified by Canadian Standards Association to both the...

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951766 Machine with running gear package Comes complete with: Power source with 10 ft. (3 m) industrial power cord 15 ft. (4.5 m) 250-amp MDX™-250 MIG gun with Bernard® AccuLock™ S consumables for .035/.045 in. (0.9/1.2 mm) wire 10 ft. (3 m) work cable with clamp and 50 mm Dinse-style connector Flow gauge regulator and gas hose for argon or AR/CO2 mix .035/.045 in. (0.9/1.2 mm) reversible drive rolls Extra contact tips Material thickness gauge Comes complete with: Power source with 10 ft. (3 m) industrial power cord 15 ft. (4.5 m) 250-amp MDX™-250 MIG gun with Bernard® AccuLock™ S...

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Genuine Miller Accessories ® MIG Gun MDX™-250 MIG Gun with AccuLock™ S Consumables 1770041 10 ft. (3 m) 1770042 12 ft. (3.7 m) 1770043 15 ft. (4.6 m), standard Industrial 250-amp MIG gun with consumables for .035/.045 in. (0.9/1.2 mm) wire. EZ-Latch™ Single Cylinder Running Gear 301449 Running gear with a single cylinder rack and storage compartment. Latches secure machine to cart. Simply rotate latches to disengage machine from cart for easy portability. EZ-Latch™ Dual Cylinder Running Gear 951769 Similar to above, but with a dual cylinder rack which allows operator to easily store two gas...

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For Spoolmatic Spool Guns and XR Push-Pull Guns Standard Bernard® AccuLock™ S Consumables Consumables for increased durability and longer life when guns are used in industrial applications. Contact Tips (10 per package) T-A023CH .023 in. (0.6 mm) T-A030CH .030 in. (0.8 mm) T-A035CH .035 in. (0.9 mm) T-A039CH .039 in. (1.0 mm) T-A045CH .045 in. (1.2 mm) Nozzles N-A5800C Copper, 5/8 in. ID, flush, standard N-A5818C Copper, 5/8 in. ID, 1/8 in. recess N-A5814C Copper, 5/8 in. ID, 1/4 in. recess Diffuser D-MA250 Monocoil Replacement Liners 10 ft. Liner LM1A-10 .023/.025 in. (0.6 mm) LMD2A-10...

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Ordering Information Power Source and Options Millermatic® 255 with Running Gear Auto-Line™ 208–240 V, 50/60 Hz with single cylinder running gear EZ-Latch™ Single Cylinder Running Gear Running gear with single cylinder rack EZ-Latch™ Dual Cylinder Running Gear Running gear with dual cylinder rack and elevated gun and cable rack EZ-Latch™ Dual Cylinder Rack with Elevated Gun and Cable Rack Upgrade single cylinder rack to dual (included with EZ-Latch dual cylinder running gear) Protective Cover Features side pocket Argon/Mixed Gas Regulator and Gas Hose Guns MDX™-250 MIG Gun with AccuLock™ S...

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