Used Miller XMT 350 CC/CV Multiprocess Welder 907161
The Used Miller XMT 350 CC/CV 907161 is a portable industrial 350-amp DC multiprocess welding power source designed for MIG, flux-cored, Stick and DC TIG welding applications. Built with Miller Auto-Line™ technology, the XMT 350 CC/CV 907161 accepts 208–575V three-phase input power without requiring manual input-voltage linking.
The XMT 350 provides a 5–425 amp CC output range, a 10–38 volt CV range, and a rated output of 350 amps at 34VDC at 60% duty cycle. With its compact aluminum housing, approximately 78 lb (35.4 kg) weight, CC/CV capability and 14-pin connection, the Miller XMT 350 is designed for demanding fabrication, construction, maintenance and industrial welding environments.
Stock number: 907161
This listing is for the XMT 350 CC/CV power-source configuration. A compatible wire feeder, welding gun and other accessories are required for MIG or flux-cored welding unless the particular machine is being sold as part of a complete package.
Miller XMT 350 CC/CV 907161
The Miller XMT 350 CC/CV is a professional DC welding power source designed to provide multiple welding processes from one machine.
The 907161 configuration is specifically identified by Miller as the 208–575V three-phase XMT 350 CC/CV power source. Auto-Line™ technology automatically adapts the machine to the connected input voltage within its specified range, eliminating the need to manually re-link the primary input.
XMT 350 907161 at a Glance
- 350A rated output
- 5–425A CC range
- 10–38V CV range
- 350A at 34VDC, 60% duty cycle
- 75V maximum open-circuit voltage
- 208–575V three-phase input
- 50/60 Hz
- CC/CV welding modes
- 14-pin feeder/remote receptacle
- Dinse-style weld connections
- Approx. 78 lb / 35.4 kg
- Compact 17 × 12.5 × 24 in. housing
Welding Processes
MIG Welding – GMAW
The Miller XMT 350 CC/CV can be configured for MIG welding when connected to a compatible wire feeder, MIG gun and shielding-gas system.
The XMT 350 operates in CV mode for compatible MIG applications, making it suitable for fabrication, manufacturing, repair, construction and other applications requiring semiautomatic wire welding.
Important: The 907161 power source is not a complete MIG welder by itself. A compatible wire feeder and gun are required.
Flux-Cored Welding – FCAW
The XMT 350 also supports flux-cored welding when paired with an appropriate wire feeder and welding gun.
FCAW is commonly used for structural fabrication, construction, heavy equipment repair, industrial maintenance and field welding where high deposition rates and portability are important.
Stick Welding – SMAW
The XMT 350 provides CC output for Stick welding and includes features intended to improve electrode starting and arc control.
Adaptive Hot Start™ helps with arc initiation, while Infinite Arc Control provides additional control over arc characteristics in applicable Stick modes.
DC TIG Welding – GTAW
The XMT 350 supports DC TIG welding with Lift-Arc™ starting.
Lift-Arc allows the operator to initiate a TIG arc without requiring a high-frequency starting system, making it suitable for appropriate DC TIG applications.
Air Carbon Arc – CAC-A
The XMT 350 can also be configured for air carbon arc cutting and gouging.
Miller specifies the XMT 350 series for carbon electrodes up to 5/16 inch (7.9 mm) under applicable operating conditions.
Is Pulsed MIG Available on the XMT 350?
The standard XMT 350 CC/CV 907161 does not have built-in pulsed MIG.
Miller distinguishes the standard XMT 350 CC/CV from the XMT 350 MPa, which is the model equipped with built-in pulse programs. Miller documentation also identifies Pulsed MIG operation on the standard XMT 350 as requiring an external pulsing device such as an Optima.
This distinction is important when buying a used machine because an XMT 350 CC/CV and XMT 350 MPa may look similar while offering different process capabilities.
Key Features Of The Miller MultiProcess Welding Machine
Auto-Line™ Technology
Miller Auto-Line™ allows the XMT 350 CC/CV 907161 to operate from 208–575V three-phase input power without manually re-linking the input voltage.
This gives contractors and fabrication shops greater flexibility when moving the machine between locations with different available three-phase voltages.
Adaptive Hot Start™
Adaptive Hot Start™ helps establish Stick welding arcs by providing additional starting output when required.
Infinite Arc Control
Infinite Arc Control allows the operator to fine-tune arc characteristics in applicable Stick and wire-welding modes.
Lift-Arc™
Lift-Arc™ provides a controlled DC TIG arc-start method without requiring high-frequency starting.
Wind Tunnel Technology™
Miller’s Wind Tunnel Technology™ is designed to route cooling airflow around sensitive electronic components, helping reduce exposure to dust and welding debris.
Fan-On-Demand™
Fan-On-Demand™ operates the cooling fan when cooling is needed rather than continuously.
This can reduce unnecessary fan operation and limit the amount of airborne contamination drawn through the machine.
Lightweight Aluminum Housing
The XMT 350 uses an aluminum housing designed to provide durability while keeping the power source relatively portable.
Dual Digital Meters
Large digital meters provide visibility of welding parameters during setup and operation.
Auto Remote Sense™
Auto Remote Sense™ automatically detects when a compatible remote control is connected.
14-Pin Receptacle
The 14-pin receptacle provides connection capability for compatible wire feeders, spool-gun equipment and remote controls.
Dinse-Style Weld Connections
Dinse-style weld terminals provide quick-connect connections for compatible welding cables.
Contact us to confirm the exact cables, connectors and accessories included with this used machine.
Insight Core® Compatibility
Compatible XMT configurations can be used with Miller’s Insight Core® Welding Intelligence system when the required equipment and service configuration are present.
Miller XMT 350 Specifications
| Specification | XMT 350 CC/CV 907161 |
|---|---|
| Brand | Miller |
| Model | XMT 350 CC/CV |
| Stock Number | 907161 |
| Product Type | DC Multiprocess Welding Power Source |
| Welding Mode | CC/CV |
| Input Voltage | 208–575V |
| Input Phase | 3-Phase |
| Input Frequency | 50/60 Hz |
| CC Amperage Range | 5–425A |
| CV Voltage Range | 10–38V |
| Rated Output | 350A at 34VDC |
| Duty Cycle | 60% |
| Maximum OCV | 75VDC |
| Processes | MIG, FCAW, Stick, DC TIG, CAC-A |
| Approx. Weight | 78 lb / 35.4 kg |
| Dimensions | 17 × 12.5 × 24 in. |
| Weld Connections | Dinse-style |
| Remote/Feeder Connection | 14-pin |
Miller’s current documentation lists the XMT 350 CC/CV 907161 at 78 lb / 35.4 kg. Some earlier Miller documentation lists approximately 80 lb, so the exact weight can vary by configuration and documentation version.
XMT 350 Input Power
The XMT 350 CC/CV 907161 is a three-phase machine with an Auto-Line input range of 208–575V.
This makes the machine suitable for shops and industrial environments where different three-phase input voltages may be available.
Important: Do not describe the 907161 as a single-phase XMT 350. Miller’s current documentation identifies the 907161 CC/CV configuration as three-phase.
XMT 350 MIG and Wire Feeder Compatibility
The XMT 350 CC/CV provides the welding power for a compatible MIG or flux-cored system but does not automatically include the wire feeder.
Depending on the configuration, the XMT 350 can be paired with compatible Miller feeder systems and accessories.
Miller’s documentation lists accessories and feeder options including:
- SuitCase® X-TREME™ feeders
- 70 Series feeders
- XR-AlumaFeed®
- XR™ Control
- Compatible spool-gun systems
- Remote controls
- Coolmate™ coolant systems
Miller has also offered complete XMT 350 MIGRunner™ packages using the 907161 power source with a wire feeder, MIGRunner cart, Bernard® gun, drive-roll kit, welding cables and flowmeter/regulator.
Verify the exact accessories included with the used unit being sold.
Applications
The Miller XMT 350 CC/CV is designed for a broad range of industrial and professional applications, including:
- Heavy industrial welding
- Structural steel fabrication
- Construction
- Shipbuilding
- Railroad fabrication and repair
- Truck and trailer manufacturing
- Heavy equipment repair
- Industrial maintenance
- General fabrication
- Equipment manufacturing
- Field welding
- Repair shops
- Rental fleets
- Mobile welding operations
Its CC/CV design allows the same power source to support different welding processes when properly configured.
Materials and Welding Applications
The XMT 350 can be used in applications involving:
- Mild steel
- Carbon steel
- Stainless steel
- Aluminum when properly configured for the applicable process
- Structural steel
- Heavy equipment
- Industrial components
- Fabricated assemblies
The exact material capability depends on the selected welding process, wire or electrode, feeder, gun and welding procedure.
Used Miller XMT 350 Condition
This listing is for a used Miller XMT 350 CC/CV 907161.
Contact us for details on this specific machine. Key inspection points for any used XMT 350 include:
- Power-up operation
- Digital meter operation
- CC output
- CV output
- Weld terminals
- 14-pin receptacle
- Fan operation
- Input connections
- Remote-control operation
- Wire-feeder compatibility
- Physical condition of the housing
- Signs of excessive dust or moisture
- Signs of impact or previous repair
Ask us which of these checks and load tests have been performed on this unit before you order.
XMT 350 Power Source vs. Complete MIG Welder
One of the most important things to understand when buying a Miller XMT 350 is that the 907161 power-source configuration is not automatically a complete MIG welding system.
Power Source Only
The XMT 350 907161 power source provides the welding output.
Additional equipment may be required for MIG or FCAW, including:
- Wire feeder
- MIG/FCAW gun
- Weld cables
- Work clamp
- Gas regulator/flowmeter
- Shielding gas
- Welding wire
- Appropriate feeder connections
Complete MIGRunner Package
Miller has also offered XMT 350 MIGRunner packages that combine the 907161 power source with a compatible feeder and additional welding equipment.
Therefore, buyers should verify whether a particular listing is for:
Power Source Only or a Complete Package.
Why Buy a Used Miller XMT 350 CC/CV?
The Miller XMT 350 CC/CV 907161 combines a 350-amp output with CC/CV capability, broad three-phase input flexibility and support for several professional welding processes.
Its core advantages include:
- 350A rated output
- 5–425A CC range
- 10–38V CV range
- 208–575V three-phase Auto-Line
- MIG compatibility
- FCAW compatibility
- Stick welding
- DC TIG
- Air carbon arc capability
- Lift-Arc TIG
- Adaptive Hot Start
- Infinite Arc Control
- Fan-On-Demand
- Wind Tunnel Technology
- 14-pin feeder/remote connection
- Portable aluminum housing
For buyers searching for a used Miller XMT 350, the exact stock number and configuration are especially important because the XMT 350 family includes different models and options.
Frequently Asked Questions
What is a Miller XMT 350?
The Miller XMT 350 is an industrial DC multiprocess welding power source designed for MIG, flux-cored, Stick, DC TIG and air carbon arc applications when properly configured.
What is Miller XMT 350 907161?
907161 is the stock number for the XMT 350 CC/CV, 208–575V three-phase power source.
Is the Miller XMT 350 a MIG welder?
It can be used for MIG welding, but the XMT 350 907161 power source is not a complete MIG package. A compatible wire feeder and welding gun are required.
How many amps is the Miller XMT 350?
The XMT 350 CC/CV has a 5–425A CC range and a rated output of 350A at 34VDC at 60% duty cycle.
What voltage does the Miller XMT 350 use?
The 907161 accepts 208–575V three-phase input power through Miller Auto-Line technology.
Can the XMT 350 Stick weld?
Yes. Stick/SMAW is one of the XMT 350’s primary CC welding processes.
Can the XMT 350 TIG weld?
Yes. The XMT 350 provides DC TIG capability with Lift-Arc starting.
Can the XMT 350 weld aluminum?
The XMT 350 is a DC power source. Aluminum MIG can be performed when the machine is configured with a compatible feeder, gun and aluminum welding wire. The appropriate process and equipment configuration should be verified for the application.
Can the XMT 350 perform flux-cored welding?
Yes. The XMT 350 can provide the welding power for FCAW when paired with a compatible wire feeder.
Can the XMT 350 perform air carbon arc gouging?
Yes. Miller identifies the XMT 350 for air carbon arc cutting and gouging with carbon electrodes up to 5/16 inch under applicable conditions.
Does the XMT 350 have Pulsed MIG?
The standard XMT 350 CC/CV 907161 does not have the built-in pulse programs associated with the XMT 350 MPa. Pulsed MIG on the standard XMT 350 requires appropriate external equipment such as an Optima pulsing device.
How much does the XMT 350 weigh?
Miller’s current specification lists the XMT 350 CC/CV 907161 at approximately 78 lb / 35.4 kg.
Does the XMT 350 include a wire feeder?
The 907161 power-source configuration is sold separately from the wire feeder. Miller has also offered complete MIGRunner packages using the 907161 with compatible feeders and accessories.
What is the maximum open-circuit voltage?
The XMT 350 CC/CV has a maximum open-circuit voltage of 75VDC.
Order a Used Miller XMT 350 CC/CV 907161
The Used Miller XMT 350 CC/CV 907161 is a portable industrial welding power source designed for professional MIG, flux-cored, Stick, DC TIG and air carbon arc applications when properly configured.
With 350A rated output, a 5–425A CC range, 10–38V CV range, 208–575V three-phase Auto-Line input and a compact approximately 78-lb design, the XMT 350 provides the flexibility required for fabrication shops, contractors, maintenance departments and field welding operations.
Before purchasing a used XMT 350, verify the 907161 stock number, input configuration, physical condition, testing performed, included cables and accessories, and whether the listing includes a wire feeder or power source only.
Related XMT Equipment and Feeders
- Miller XMT 350 multioperator rack – four or six XMT 350 power sources in one rack
- Miller SuitCase X-TREME 12VS wire feeder – 425A voltage-sensing feeder that runs on CC or CV power
- Profax 1VS suitcase wire feeder – voltage-sensing suitcase feeder supplied with an M-25 style gun
- Lincoln Invertec V350-PRO multi-process welder – 350A inverter for MIG, flux-cored, stick and DC TIG
Browse all multiprocess welders or used Miller welders.
Bennet Cole (verified owner) –
Bought this unit to handle 1/4″ gouging carbons in our trailer repair bay. It effortlessly pushes up to 350A without thermal tripping on long passes. Freight took four days on a mini-pallet, though the seller forgot to snap on the little plastic knob guard. Still, fantastic power-to-size ratio.
Greg’s Shop (verified owner) –
We’ve been pounding through 5/32″ 7018 electrodes all week repairing heavy equipment buckets at 180 amps. The Adaptive Hot Start is fantastic—no annoying sticking on those awkward vertical-up starts. Machine arrived clean, matched the seller’s photos, and honestly runs like a brand new unit.
Arthur Cade (verified owner) –
Got this for a stainless pipe job, running 1/8″ filler at 140 amps on DC TIG. The arc starts clean without fouling the tungsten at all. Only real downside was the original Dinse twist-locks were completely clunked out, so I had to throw a new set on right away. Crate was packed well and the digital meters are fully functional.
Bryce Marcel (verified owner) –
The machine itself lays down beautiful spray-arc beads on 3/8″ aluminum with a spool gun. However, the seller didn’t mention that the Auto Remote Sense needed a board reset to talk to our older foot pedal. Lost about an hour getting it set up, but it’s been running fine ever since.
Ryan Van Sellus (verified owner) –
Paired this with a 7440 feeder for continuous .045 MIG runs on mild steel tubing. The 14-pin control socket picked it up instantly with zero lag. Packaging was super solid with heavy foam edge protectors, and the inside of the case was completely free of dust. A total workhorse for any fab shop.
Jasmine Pearl (verified owner) –
We picked up this used XMT 350 to run dual-shield MIG on 1/2″ structural plate over a brutal three-week deadline. Being able to hop between 208V single-phase and 480V 3-phase without messing around inside the panel saved us a ton of time. A few scuffs on the side panels from shipping, but the internal fan was spotless and the arc was rock solid.
Damian Guz (verified owner) –
Took this power source out into the field for a couple months pushing 3/16″ 6010 root passes on thick pipe. Tuning the Dig control on the front panel makes dial-in simple. It came with typical job-site scuffs, but the internals were tight. Reliable inverter if you’re constantly moving locations.
Morris Gusto (verified owner) –
Put this right to work on 5/16″ stainless steel tanks. The Fan-On-Demand is great—it only kicks on when the machine actually gets warm, which cuts down on dust build-up and keeps the background noise low. Freight delivery was fast and it arrived bolted down tight on a good skid.
Ryan Whitaker (verified owner) –
Tested this 907161 model on everything from thin 16-gauge tubing up to 1/2″ beam flanges. Arc starts are quick and predictable, and the twin digital meters make fine adjustments effortless. Truck driver had it off the lift-gate in three days flat. Super versatile setup.
Colyer Wilson (verified owner) –
Replaced an older 400-lb transformer machine with this 80-lb inverter for mobile gigs. Ran .035 hard wire on 1/4″ angle iron for a solid week without a hiccup. Was delivered wrapped tight in shrink wrap on a mini-skid two days early. Couldn’t ask for much more.
Jason Caldwell (verified owner) –
We move this machine around our bay between 230V and 460V outlets regularly without touching primary jumpers. Runs continuous flux-core on heavy plate with very little spatter to clean up. The main input cable had a bit of wear on the outer rubber jacket, but electrically it’s been flawless.
Trevor Liles (verified owner) –
Used this to lay hardfacing wire on 3/4″ excavator bucket teeth. Even when running off generator power with fluctuating line voltage, the arc stayed steady as a rock. Delivery was quick and the protective plastic cover over the meters was crack-free. Exceptional used rig.
Mase Payton (verified owner) –
Easily puts out over 300 amps for heavy dual-shield passes. However, on day two the internal gas solenoid got stuck open and I had to take the cover off to blow it out. Cosmetically it matched the listing fine and was bubble-wrapped like crazy. Good machine as long as you don’t mind basic maintenance.
Pete Sanchez (verified owner) –
Connected straight to our 208V 3-phase line without any hassle. Shipping was surprisingly fast for freight and the welder was strapped down rock-solid.
Brentt Rodriquez (verified owner) –
The duty cycle is absurdly good for a machine this size. Paint was chipped around the base corners, but internal diagnostics checked out completely clean.
Danny Mercier (verified owner) –
Brought this out for two weeks of stainless sanitary pipe installation. Lift-Arc starts mean you’re not constantly regrinding tungsten tips after accidental touches. Matched the seller’s description line-for-line and arrived in a heavy reinforced box. Great portable unit.
Bennie Miles (verified owner) –
Ran long duty cycles on 3/8″ square tubing using solid MIG wire. The smart cooling fan rarely runs full blast unless you’re really pushing it, which saves your ears in a small shop. Minor wear on the main power switch, but it functions 100%.