Miller Electric Bobcat 250
The Miller Bobcat 250 remains a benchmark engine-driven welder for contractors, farmers, and field service crews who need dependable arc welding paired with real auxiliary power.
- Rated output
- 250 A
- Steel window
- 0.8–6.3 mm
- Mass
- approx. 780 lbs (354 kg)
- Welding Output
- 250A CC/CV
- Reliable field welding power
- Built-in auxiliary generator
- Multi-process versatility
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Running it
The Miller Bobcat 250 stands as one of the most trusted names in engine-driven welding, built for professionals who need reliable power in the field, on the farm, or at remote job sites. This machine combines a dependable welding power source with an onboard generator, allowing operators to run stick and DC TIG welding processes while also powering tools, lights, and other equipment through its auxiliary power output. Available in gasoline (Kohler or Onan) and diesel engine configurations, the Bobcat 250 delivers up to 250 amps of welding output along with 11,000 watts of usable generator power, making it a versatile solution for construction crews, pipeline welders, and agricultural operations that demand both welding capability and electrical power away from the grid. Built with Miller's signature durability, the Bobcat 250 features a rugged steel frame, weather-resistant components, and a design that prioritizes ease of maintenance in demanding outdoor environments. The welder produces a smooth, stable arc across a wide amperage range, giving welders confidence when working with mild steel, stainless steel, or aluminum in stick or TIG applications. Fan-on-demand technology helps reduce engine wear and noise by running the cooling fan only when needed, while the enclosed case design protects internal components from dust, dirt, and moisture commonly encountered on job sites. These engineering choices reflect Miller's focus on longevity, ensuring the Bobcat 250 continues performing reliably after years of heavy use in tough conditions. Beyond its welding performance, the Bobcat 250 is prized for its portability and dual functionality, making it a favorite among contractors who need a single machine to handle multiple tasks throughout the workday. The generator side of the unit supports both 120V and 240V output, allowing operators to run grinders, lights, pumps, or other job site equipment without needing a separate generator. Its compact footprint and available wheel kit options make transport between locations straightforward, while simplified controls ensure that even less experienced operators can adjust settings quickly and accurately. For welding professionals who require dependable arc performance combined with auxiliary power capability, the Miller Bobcat 250 remains a benchmark engine-driven welder within the welding equipment industry.
The Miller Bobcat 250 remains a benchmark engine-driven welder for contractors, farmers, and field service crews who need dependable arc welding paired with real auxiliary power. Its balance of welding versatility, generator capacity, and rugged Miller build quality justifies the investment for anyone working off-grid or on remote job sites.
The full plate
As stated by the manufacturer, 5 lines.
| Welding Output | 250A CC/CV |
|---|---|
| Generator Power | 11,000 Watts AC |
| Engine Options | Kohler gas, Honda gas, or Deutz diesel |
| Weight | approx. 780 lbs (354 kg) |
| Fuel Tank Capacity | 9.5 gallons (36 L) |
What holds up
- Extremely reliable in remote and rugged field conditions
- Smooth, stable arc across multiple welding processes
- Generous auxiliary power output for job site tools
- Fan-On-Demand technology extends engine life and reduces noise
- Widely serviced with strong parts availability nationwide
- Good fuel efficiency relative to output class
What costs you
- Heavy unit, requires trailer or lift for mobility
- Higher upfront cost compared to basic engine welders
- Routine maintenance needed for gas engine models
- Limited amperage ceiling for heavier structural welding tasks
- Generator noise still noticeable under full load
Stated features
- Kohler or Honda gas engine options for reliable power
- CC/CV welding output up to 250A for stick, MIG, TIG, and flux-cored
- Built-in 11,000-watt AC generator for auxiliary power tools and lighting
- Fan-On-Demand cooling system reduces noise, fuel use, and dust intake
- Deutz diesel variant available for heavy-duty jobsite use
- Durable rotomolded polyethylene fuel tank resists cracking and corrosion
- Standard receptacles (120V/240V) for running grinders, lights, and other equipment
5 people who bought it
Ive run this Bobcat 250 for three years on fencing and equipment repair jobs. Starts every time, welds clean, and the generator side powers my grinders and lights without issue.
Welding performance is excellent across stick and MIG. Only downside is how heavy it is to move without a trailer setup, but that's expected for this class.
We use two of these on pipeline punch-out work. The Fan-On-Demand feature really cuts down noise and fuel burn during idle periods between welds.
Beyond welding, the 11,000-watt generator runs our job site trailer, lights, and power tools simultaneously without dropping voltage. Very dependable machine.
This is my second Bobcat and it hasn't let me down. Parts are easy to find and any welding shop can service it if needed.
Three entries that sit next to it
Nearest standings in the ledger. Tick one to add it to the cross-reference sheet on the front page.
| 11 | Miller Electric Big Blue 400 Pro Miller Electric · Engine-Driven Welders | 400 A | 4.6 / 5 | B | ||
| 9 | Miller Electric Trailblazer 325 Miller Electric · Engine-Driven Welders | 325 A | 4.6 / 5 | B | ||
| 8 | Lincoln Electric Ranger 225 Lincoln Electric · Engine-Driven Welders | 225 A · 100% duty | 4.6 / 5 | B |
