302 Kohler Air Pak Welder/Generator

The Miller Trailblazer 302 Kohler Air Pak combines multi-process welding, an integrated rotary-screw air compressor, and a battery charger and jump-start function in a single all-in-one engine drive, built for repair and construction work where space on a truck bed is limited.

What it's for

Peak generator output here reaches 13,000 watts independent of weld settings, which this maker calls industry-leading, and is enough to run a plasma cutter while simultaneously feeding compressed air for that same cutting job, rated for 5/8-inch mild steel. Running the air compressor, welder, and generator from one engine cuts fuel use and emissions by up to half compared with running separate machines.

Air compressor details

At full speed the onboard rotary-screw unit puts out 31 CFM across an 80 to 160 PSI range, on a 100 percent duty cycle, rated while operating at 104 degrees Fahrenheit, and this maker states it lasts roughly three times longer than a traditional reciprocating compressor. Front-panel air pressure adjustment lets you dial in 80 to 160 PSI depending on the tool in use, with full deliverable air available on demand rather than waiting on a tank to refill.

What to check before buying

Taking up only about half the truck bed space of a separate compressor and welder leaves considerably more room for other equipment, and side and top access doors along with digital maintenance meters are built in for easier servicing. At 771 pounds, confirm your mounting setup can support the weight; the unit carries a 3-year manufacturer's warranty.

Specifications