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 should not be marketed as having 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.
The exact cables, connectors and accessories included with this used machine should be confirmed before purchase.
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.
Because this is pre-owned industrial welding equipment, the actual condition of the specific machine should be clearly documented rather than relying solely on generic statements such as “fully functional.”
Important inspection points 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
If the machine has been tested under welding load, state the actual test performed. This gives prospective buyers substantially more useful information than an unsupported condition claim.
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.
Jacob West (verified owner) –
The size makes it much easier to move around when compared with some of the larger industrial machines. I’ve used it for both stick and mig applications and have been happy with the arc performance. It has enough output for the fabrication and repair work I normally do, while still being practical to move when needed.
Bob Clavis (verified owner) –
This has been a dependable machine for our general fabrication work. We use it for several different applications, so having both CC and CV capability is useful. Once the settings are dialed in, the machine runs smoothly and gives consistent results.
There are quite a few controls to become familiar with if you’re coming from a basic welder, but that extra adjustment is useful once you understand what everything does.
Burg Farrel (verified owner) –
We occasionally need to take the welder out of the garage for repair and fabrication work, and having a machine that’s easier to transport makes those jobs much less complicated.
Performance has been reliable so far. We’ve used it for different welding processes and haven’t had problems getting the machine set up for the application. It feels like a professional piece of equipment rather than a lightweight hobby machine.
Jeremy Oddy (verified owner) –
performed consistently and the arc is easy to work with once the settings are adjusted for the job. It’s also reasonably practical to move around compared with larger industrial power sources. What I like most is having one machine that can cover several applications without taking up the space of multiple welders.
Rico Petterson (verified owner) –
I particularly like the flexibility of having CC/CV output in one unit. It means we’re not constantly switching between different power sources when the job changes. The machine isn’t overly complicated once you’re familiar with the controls. The XMT has a rugged feel and has been consistent across the fabrication and repair work we’ve used it for.
Devon Thomas (verified owner) –
Being able to use one power source for different welding processes makes a noticeable difference when you’re moving between jobs.