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A FLE24 Cat P 07 MIG.qxp_MIG 1/11/24 5:21 PM Page 1

ALL-IN-ONE GMAW MIG

® Industrial
Millermatic 255 See literature DC/12.8
Processes
MIG (GMAW) Flux-cored (FCAW)
Pulsed MIG (GMAW-P)
Comes complete with
™
Welding Capability 15 ft. (4.5 m) 250-amp MDX -250
MIG gun with AccuLock ™ S
Max. 1/2 in. (13 mm) Max. 1/2 in. (13 mm) consumables
Aluminum
10 ft. (3 m) work cable with clamp
welding uses
optional 10 ft. (3 m) industrial power cord
Mild Steel Aluminum XR-Aluma-Pro Factory-installed gas solenoid
push-pull gun. Flow gauge regulator and gas hose
Min. 24 ga. (0.6 mm) Min. 18 ga. (1.2 mm)
for argon or AR/CO 2 mix
.035/.045 in. reversible V-groove
drive rolls
Extra contact tips and material
Recommended
thickness gauge (229895)
aluminum solution
XR-Aluma-Pro ™ push-pull Most popular accessories
gun (page 30). Spoolmatic® Spool Gun (pg 29)
(non-Pro gun only)
XR-Aluma-Pro Air-Cooled Push-Pull
™
Guns (pg 30)
XR ™ -Pistol-Pro Air-Cooled Push-Pull
Guns (pg 30)
EZ-Latch ™ Single Cylinder Running
Gear 301449 (pg 122)
Millermatic 255 EZ-Latch ™ Dual Cylinder Rack with
with EZ-Latch single cylinder Elevated Gun and Cable Rack
running gear shown.
301481 (pg 122)
Converts an EZ-Latch ™ Single Cylinder
Built-in pulsed MIG programs. All programmed Running Gear into a Dual Cylinder
Rack Running Gear as seen below
information is restored after each power up —
steel/stainless steel/aluminum/silicon bronze.
Auto-Set Elite offers predefined weld settings to
™
increase ease of use and ensure that the job is done
right for operators of all skill levels.
Available for MIG and pulsed MIG processes with the
Easy-to-understand interface with 7-inch color ability to fine-tune your settings
LCD display ensures proper machine setup and Set weld parameters by selecting wire and gas type,
parameter selection, reducing setup time and wire diameter and material thickness
increasing weld time.
Program mode allows easy save and recall of favorite
Quick-access Auto-Set and pulse mode backlit weld settings. Delivers greater productivity and consistent
buttons across the top illuminate when active quality while minimizing supervisor intervention.
Soft-key buttons below the display change
EXCLUSIVE! Auto-Gun Detect automatically adjusts
™
function depending on which screen is displayed — EZ-Latch ™ Dual Cylinder Rack
voltage, wire speed and timers for faster switching
makes setup or change quick, easy and intuitive Running Gear 951769 (pg 122)
between MIG, push-pull and spool guns. Protective Cover 301521 (pg 125)
Large text for easier readability
Intuitive connection setup images Heavy-duty aluminum two-drive-roll system. Visit MillerWelds.com or your distributor
for other Miller®options and accessories.
Full troubleshooting descriptions versus help errors Uses 4-, 8- or 12-inch (102, 203 or 305 mm) spools.
and look up codes Fan-On-Demand cooling system only operates when
™
Allows for any input voltage needed, reducing power consumption and keeping
hookup (208–240 V, internal components cleaner.
single-phase) with no manual linking, providing
convenience in any job setting. Ideal solution for dirty
or unreliable power.

*See literature DC/12.8 for dimensions and weight with running gear.
Stock Number Amperage Amps Input at Rated Output, 50/60 Hz Power Source Power Source
907734 Range Rated Output 208 V 240 V KVA KW Wire Feed Speed Wire Type and Diameter Capacity Dimensions* Net Weight*
951766 With EZ-Latch 20–350 230 A at 25.5 VDC, 44.0 39.5 9.5 7.2 50–800 ipm Solid steel .023–.045 in. (0.6–1.2 mm) H: 19.25 in. (489 mm) 84 lb.
single cylinder running gear 60% duty cycle (1.3–20 m/min.) Stainless .023–.045 in. (0.6–1.2 mm) W: 13.75 in. (349 mm) (38 kg)
Aluminum .035–.047 in. (0.9–1.2 mm) D: 24.25 in. (616 mm)
Flux-cored .030–.045 in. (0.8–1.2 mm)
Silicon bronze .030–.035 in. (0.8–0.9 mm)
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