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Welding Machine - Miller Thunderbolt 225 CC AC Arc Stick Welder 220V - $275 (Mesa, AZ)
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The wheels are bent, it's very heavy, not a great design for how heavy it is, but it still rolls......
CASH ONLY - MESA, MCDOWELL AND LINDSAY.
Description:
The Miller Thunderbolt 225 CC AC is a highly durable and reliable constant-current (CC) arc stick welder. Operating on 230V single-phase power, it provides up to 225 amps of AC output, making it an excellent, heavy-duty choice for farm, maintenance, and home fabrication projects.
Key Specifications & Features
• Output Range: Features high (40–225 A) and low (30–150 A) ranges for precise heat control.
• Amperage Control: Utilizes a crank/hand-wheel on top of the machine for smooth, infinite amperage adjustments.
• Duty Cycle: Generally rated at 20% duty cycle at 225 amps, allowing for 2 minutes of continuous welding in a 10-minute period at maximum output.
• Power Requirement: Requires a 50-amp circuit breaker for full-power operation.
• Electrode Compatibility: Capable of running a wide variety of stick electrodes, including 6011 and 7018
Pros & Cons
• Pros: Bulletproof copper-wound transformer construction, extremely reliable, parts availability is generally good, and it handles thick metals easily.
• Cons: Heavy and bulky (often weighs around 100+ lbs), making it less portable. Because it is AC-only, the arc may not be quite as smooth or easy to strike as it is on newer, inverter-based AC/DC machines
Buying Used
Because this machine has been out of production for some time, it is heavily traded on the used market. If you are looking to buy one, expect to pay anywhere from $100 to $600 depending on condition.
Before purchasing, you should always inspect and test:
1. The Cooling Fan: Ensure the fan spins properly when plugged in.
2. The Crank: Turn the crank on the top to verify the amperage dial moves smoothly without binding.
3. The Arc: Test the machine by striking an arc on both the high and low ranges to ensure it welds smoothly and doesn't produce an electrical burning smell, which would indicate internal damage.
4. Included Accessories: Replacement cables, clamps, and leads are an additional expense; finding a unit that includes these can save you a lot of money.
5.
• OWNER'S MANUAL - Miller Welding
© 1995 MILLER Electric Mfg. Co. Thunderbolt® 225. CC/AC Welding Power Source For SMAW (Stick) Welding. Rated. Welding. Output. Amp