200 Air Pak Welder Generator

The Miller Bobcat 200 Air Pak combines engine-driven stick welding, an AC generator, a built-in rotary-screw air compressor, and battery charge and crank-assist functions in one compact unit, aimed at work-truck operators who want to consolidate several pieces of equipment onto one machine.

What it does

Welding output reaches up to 210 amps of DC stick power, while the generator side delivers 5,500 watts of continuous power from a 23 HP EFI Kohler engine with an electronic throttle body and a 7-gallon fuel tank. Auto-Speed technology matches engine speed to weld and battery-charge demand, which helps control fuel use, maintenance intervals, and noise.

Air compressor and battery functions

The onboard 30 CFM rotary-screw compressor runs most 3/4-inch impact wrenches and other air tools, delivering 20 CFM at idle and 30 CFM at full speed across a typical 80 to 175 PSI working range, with an automatic shutdown at 200 PSI for protection. Battery charge and crank assist add up to 100 amps of charging current for 12 and 24-volt batteries, with up to 300 amps of crank assist available for a weak jobsite battery.

What to check before buying

The control panel groups the air compressor switch, battery charge and crank-assist switch and receptacle, maintenance indicator lights, engine control switch, and four 120V plus one 240V receptacles, so plan your power needs around that layout. The compressor itself uses a 2-quart oil capacity and a compact footprint that this maker states cuts weight compared with running a separate air compressor and welder.

Specifications