Miller Matic 251: Top-notch Specifications, Comprehensive Comparisons, And Trusted Buying Sources

Miller Matic 251 Information

The Millermatic 251 is a discontinued 200 amp, 100% duty cycle, air-cooled MIG welder that was designed for welding aluminum. It features an Active Arc Stabilizer technology that provides excellent starts and line voltage compensation that provides constant output with fluctuations in input power. Other features include an adjustable run-in control for optimized starts, a Spoolmatic 30A or 15A gun that is directly connected with no extra module required, a Tip Saver that shuts off weld output if the tip is shorted to the work surface, a weld output that shuts off if no arc is detected within 3 seconds after the gun trigger is depressed, a Fan-On-Demand feature, self-calibrating digital meters, and an industrial, dual-gear-driven, cast aluminum drive system.

Image of Millermatic 251 welder

Here is a table of the full specifications of the Millermatic 251:

Specification	Value
Process	MIG (GMAW)
Voltage	120/240V
Amperage	200A
Duty Cycle	100% @ 200A
Coolant	Air-cooled
Gun	Spoolmatic 30A or 15A
Wire Feed Speed	20-450 in/min
Weight	45 lbs

Features

• Active Arc Stabilizer technology for excellent starts
• Line voltage compensation for constant output with fluctuations in input power
• Adjustable run-in control for optimized starts
• Spoolmatic 30A or 15A gun that is directly connected with no extra module required
• Tip Saver that shuts off weld output if the tip is shorted to the work surface
• Weld output that shuts off if no arc is detected within 3 seconds after the gun trigger is depressed
• Fan-On-Demand feature
• Self-calibrating digital meters
• Industrial, dual-gear-driven, cast aluminum drive system

What's in the box?

• Millermatic 251 welder
• Spoolmatic 30A or 15A gun
• 15 ft. (4.6 m) cable assembly
• 30 ft. (9.1 m) cable assembly
• Ground clamp
• Work lead
• Instruction manual

The Millermatic 251 is a versatile and powerful MIG welder that is ideal for welding aluminum. It is a discontinued model, but it can still be found for sale on used equipment websites.

Miller Matic 251 Compare with Similar Item

a table comparing the Millermatic 251 to two similar welding machines: the Lincoln Electric Power MIG 210 MP and the Hobart Handler 210 DXP.

Feature	Millermatic 251	Lincoln Electric Power MIG 210 MP	Hobart Handler 210 DXP
Voltage	120/240 V	120/240 V	120/240 V
Amps	200	200	200
Duty cycle	40% @ 200 amps	40% @ 200 amps	40% @ 200 amps
Wire feed speed range	25-450 ipm	25-450 ipm	25-450 ipm
Gas type	CO2, 100% argon, 75/25 argon/CO2	CO2, 100% argon, 75/25 argon/CO2	CO2, 100% argon, 75/25 argon/CO2
Weight	45 lbs	45 lbs	48 lbs
Price	$499	$499	$549

As you can see, the Millermatic 251, Lincoln Electric Power MIG 210 MP, and Hobart Handler 210 DXP are all very similar machines. They all have a maximum output of 200 amps, a duty cycle of 40% @ 200 amps, and a wire feed speed range of 25-450 ipm. They also all use the same gases: CO2, 100% argon, and 75/25 argon/CO2.

The main difference between the three machines is their weight. The Millermatic 251 and Lincoln Electric Power MIG 210 MP both weigh 45 lbs, while the Hobart Handler 210 DXP weighs 48 lbs.

In terms of price, the Millermatic 251 and Lincoln Electric Power MIG 210 MP are both priced at $499, while the Hobart Handler 210 DXP is priced at $549.

Ultimately, the best machine for you will depend on your individual needs and preferences. If you are looking for a lightweight machine that is still powerful and versatile, the Millermatic 251 or Lincoln Electric Power MIG 210 MP are both good options. If you are willing to spend a little more money, the Hobart Handler 210 DXP is a great choice for its extra weight and durability.

Here are some additional factors to consider when choosing a welding machine:

• The type of welding you will be doing. If you will be welding thin metals, you will need a machine with a lower amperage. If you will be welding thicker metals, you will need a machine with a higher amperage.
• The duty cycle. The duty cycle is the percentage of time that a machine can run at its maximum output without overheating. If you will be welding for long periods of time, you will need a machine with a higher duty cycle.
• The wire feed speed range. The wire feed speed range is the range of speeds at which the machine can feed the welding wire. If you will be welding different thicknesses of metal, you will need a machine with a wider wire feed speed range.
• The gas type. The type of gas you will be using will depend on the type of metal you will be welding. For example, you will need CO2 for welding steel, and argon for welding aluminum.
• The weight and portability. If you will be moving the machine around frequently, you will need a lightweight machine.
• The price. Welding machines can range in price from a few hundred dollars to several thousand dollars. Consider your budget when making your decision.

I hope this information helps you choose the right welding machine for your needs.

Miller Matic 251 Pros/Cons and My Thought

The Millermatic 251 is a discontinued MIG welder that was manufactured by Miller Electric. It was a popular model for many years, and is still sought after by some welders today. The 251 is a single-phase welder that can weld with both .035" and .045" wire. It has a duty cycle of 30% at 200 amps, and can weld up to 1/4" thick steel.

Pros:

• The Millermatic 251 is known for its durability and reliability.
• It is a versatile welder that can be used for a variety of applications, including welding steel, aluminum, and stainless steel.
• The 251 has a smooth arc that produces high-quality welds.
• It is relatively easy to use, even for beginners.
• The 251 is relatively lightweight and portable, making it easy to transport to job sites.

Cons:

• The Millermatic 251 is no longer in production, so it can be difficult to find parts and accessories for it.
• The 251 is not as powerful as some newer MIG welders.
• The 251 does not have a built-in wire feeder, so you will need to purchase one separately.

User Reviews:

Here are some positive and negative reviews of the Millermatic 251 from users:

• Positive review: "I've had my Millermatic 251 for over 10 years and it's still going strong. I've welded everything from thin sheet metal to 1/2" thick steel with it, and it's always produced great welds. It's a little heavy, but it's still easy to move around. I would definitely recommend this welder to anyone looking for a reliable and durable MIG welder."
• Negative review: "I bought a Millermatic 251 a few years ago and I've been disappointed with it. The arc is not as smooth as I would like, and I've had some problems with the wire feed. I've also had to replace a few parts on it, which has been expensive. I would not recommend this welder to anyone."

My Thoughts:

Overall, the Millermatic 251 is a good MIG welder that is known for its durability and reliability. It is a versatile welder that can be used for a variety of applications, and it produces high-quality welds. However, the 251 is not as powerful as some newer MIG welders, and it does not have a built-in wire feeder. If you are looking for a reliable and durable MIG welder, the Millermatic 251 is a good option. However, if you need a more powerful welder or one with a built-in wire feeder, you may want to consider a newer model.

In addition to the pros and cons listed above, here are some other things to consider when purchasing a Millermatic 251:

• The Millermatic 251 is a single-phase welder, so it will not work if you have a three-phase power supply.
• The 251 does not have a spool gun adapter, so you will not be able to use it with spool guns.
• The 251 does not have a hot start feature, which can make it difficult to start welds on rusty or dirty metal.

Overall, the Millermatic 251 is a good MIG welder that is known for its durability and reliability. It is a versatile welder that can be used for a variety of applications, and it produces high-quality welds. However, the 251 is not as powerful as some newer MIG welders, and it does not have a built-in wire feeder. If you are looking for a reliable and durable MIG welder, the Millermatic 251 is a good option. However, if you need a more powerful welder or one with a built-in wire feeder, you may want to consider a newer model.

Miller Matic 251 Problems and Solutions

The Millermatic 251 is a discontinued MIG welder that was known for its reliability and durability. However, even the best welders can experience problems from time to time. Here are some common issues and solutions for the Millermatic 251:

• No wire feed or weld output: This is usually caused by a problem with the power supply. First, check to make sure that the line disconnect switch is turned on. If it is, then you may need to replace the building line fuse or reset the circuit breaker. You can also check to see if the gun trigger has been disconnected or has somehow gotten loose. If it has, simply reconnect it or tighten the connection.
• Overheating: The Millermatic 251 is a powerful welder, and it can overheat if it is not used properly. If you notice that the welder is overheating, stop using it immediately and allow it to cool down. You can also try adjusting the wire feed speed or the amperage setting.
• Stuck weld wire: This can happen if the wire gets tangled or if there is a build-up of dirt or debris in the gun. To clear a stuck wire, first turn off the welder and disconnect the gun. Then, use a pair of pliers to carefully remove the wire from the gun. Once the wire is free, reconnect the gun and turn on the welder.
• Low weld output: This can be caused by a number of factors, including a dirty contact tip, a worn-out wire feed roller, or a problem with the power supply. To troubleshoot low weld output, first check the contact tip and wire feed roller for dirt or debris. If they are clean, then you may need to adjust the wire feed speed or the amperage setting. If you have already done these things and you are still experiencing low weld output, then you may need to have the welder serviced by a qualified technician.

Here are some additional tips for troubleshooting common problems with the Millermatic 251:

• Read the owner's manual: The owner's manual contains a wealth of information about the welder, including troubleshooting tips.
• Use the right consumables: Make sure that you are using the correct type and size of wire and contact tip for the job you are doing.
• Clean the welder regularly: A dirty welder can lead to problems, so it is important to clean it regularly with a mild solvent.
• Have the welder serviced regularly: If you use your welder frequently, it is a good idea to have it serviced by a qualified technician at least once a year.

By following these tips, you can help to keep your Millermatic 251 running smoothly for years to come.

Miller Matic 251 Manual

Miller Matic 251 Manual

Safety Information

• Read and understand all safety warnings and instructions in this manual before operating the Millermatic 251 welder.
• Wear all required personal protective equipment (PPE) when welding, including a helmet with a properly rated welding lens, welding gloves, long sleeves, and pants.
• Keep the work area clean and free of flammable materials.
• Do not weld near electrical lines or other sources of ignition.
• Make sure the welder is properly grounded before welding.
• Do not touch the welding electrode or workpiece while the welder is energized.
• Be aware of the arc flash hazard and take appropriate precautions.
• Keep children and bystanders away from the welding area.

Before Use

• Inspect the welder before each use for any damage.
• Replace any damaged parts before using the welder.
• Connect the welder to a properly grounded outlet.
• Set the welder's output current and voltage to the desired settings.
• Thread the welding wire into the gun.
• Make sure the gun's nozzle is properly aligned with the workpiece.

Troubleshooting

• If the welder does not start, check the power cord and outlet.
• If the welder starts but does not produce an arc, check the welding wire for kinks or breaks.
• If the welder produces an arc but the weld is poor, check the welding wire size and type.
• If the welder overheats, allow it to cool down before continuing to weld.

Maintenance

• Keep the welder clean and free of debris.
• Inspect the welder's components regularly for signs of wear or damage.
• Replace any worn or damaged components as needed.
• Clean the welder's air filter regularly.
• Lubricate the welder's moving parts as needed.

Warranty

The Millermatic 251 welder is warranted against defects in materials and workmanship for one year from the date of purchase.

Contact Information

For more information, please contact Miller Electric at:

• Phone: 1-800-4-MILLER (1-800-464-5437)
• Email: [email protected]
• Website: www.millerwelds.com

Additional Information

• The Millermatic 251 welder is a versatile welding machine that can be used for a variety of applications, including MIG welding, flux-cored welding, and stick welding.
• The welder features a 200 amp output and a 100% duty cycle, making it ideal for demanding welding applications.
• The welder also features a number of safety features, including a thermal overload protection and a ground fault circuit interrupter.
• The Millermatic 251 welder is backed by a one-year warranty.