The air the workshop runs on · review
A petrol-engined machine that is a 14 CFM compressor, a 5,000 W generator and a 180 A DC stick welder at once — for a truck bed with no mains supply.
Where we come out Three machines on one Honda engine, with real air delivery and a 180 A welding output — and no duty cycle published for the welder that justifies half the price.
There is one reason to buy this and the listing states it plainly: mobile work with no mains supply. A Honda GX390 drives an air compressor delivering 14 CFM at 90 PSI into a 30-gallon tank to 175 PSI, a 5,000 W generator with 120 V and 240 V outlets, and a 200 A welder giving up to 180 A on DC stick. The alternative is three machines, three engines and three services, and no room left in the truck.
The air figure is published the way this hub asks for it — a delivery at a stated pressure — and 14 CFM is the point at which a compressor stops being an inflator and starts running tools. A plasma torch wants 3 to 5 CFM continuously, a die grinder 4 to 6; this will hold either. The 180 A welding output covers 3.2 mm (0.13 in) rods without argument, which is most site repair work.
What is not published is the figure that decides whether the welder is a welder. A duty cycle tells you how many minutes in ten the machine can hold 180 A, and a 20 per cent machine and a 60 per cent machine are different tools at the same amperage. The page gives neither, nor the machine weight on a product sold for truck mounting, nor a noise figure. And for a fixed workshop with a 230 V circuit, the 80-gallon two-stage compressor on this shelf delivers more air, with more storage, at half the price — because it does only one of the three jobs.
Read on the day this page was built: $6800 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-10-07. The live price is at the top of the page.
| Amazon reference | B09Y1P33GV |
|---|---|
| EAN | 0045564637637 |
Someone whose work has no mains electricity. On a farm, a pipeline, a roadside or a remote site, the alternative to this is a generator, a compressor and a welder, each with its own engine, its own fuel and its own space in a truck. One Honda GX390 driving all three is smaller, lighter and cheaper to maintain than three engines — and the reason it costs what it does. In a workshop with a 230 V supply it makes no sense at all, and the 80-gallon machine on this shelf delivers more air for half the price.
It is real workshop air. Fourteen CFM at 90 PSI will run a plasma torch, a die grinder or an impact wrench continuously, which the two portable compressors on this shelf — 2.6 SCFM and an unpublished figure — cannot. The 80-gallon two-stage machine here delivers 17.2 CFM at the same pressure with nearly three times the storage, so this is the mobile version of that capability rather than an upgrade on it.
The welder’s duty cycle, which is the figure that decides whether 180 A is available for a bead or for a few seconds. A 200 A machine rated at 20 per cent duty and one rated at 60 per cent are different tools, and the listing gives neither. The machine weight is also absent, on a product whose selling point is truck mounting — and there is no noise figure for a petrol engine driving a compressor pump.
Same shelf, nearest price — what else that money puts on the bench.
Details checked on October 7, 2026.
Site and roadside work with no electricity, where one engine has to do three jobs
Specifications: the manufacturer sheet for welding and metalworking machines and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
80 gal ASME · 5 HP 230 V · 18.4/17.2/16.4 CFM at 40/90/175 PSI · 15,000 h
A two-stage commercial compressor that publishes its delivery at three pressures — which is exactly what this hub’s buying tip asks for and almost nothing on the market does.
Best for: A workshop running a plasma cutter, a blast cabinet or air tools continuously, with a 230 V single-phase supply
≈ $3470
6 gal · 1.0 HP · 150 PSI max · 2.6 SCFM at 90 PSI · 30.8 lb
A six-gallon pancake that publishes what the hub asks for — 2.6 SCFM at 90 PSI — and its own weight at 30.8 lb.
Best for: Nail guns, tires and intermittent air work in a garage, where portability matters more than volume
≈ $160
2 gal · 1/3 HP · 125 PSI max · 10-piece accessory kit · no CFM published
A two-gallon oil-free portable whose listing is a single bullet — the accessory list — with no air delivery figure anywhere on the page.
Best for: Tires, blowing down a workbench and a staple gun — not for any air tool that runs continuously
≈ $140
