Why Invest in an Airman Diesel Generator?

If you are weighing up a diesel generator purchase for your business, farm, or hire fleet, the short answer is this: Airman generators are built in Japan by a manufacturer with over 85 years of engineering history. They use Kubota and Isuzu engines and are over-engineered in the areas that determine how long a generator actually lasts. This combination is hard to find anywhere else at this price point.

Here are some details about this one-of-a-kind machine.

Who makes Airman generators?

Airman is the brand of Airman Corporation (formerly Hokuetsu Industries), a Japanese manufacturer founded in 1938 in Tsubame, Niigata. The company started in air compressors, where it remains a market leader across Asia, and expanded into diesel generators using the exact same engineering philosophy: durability, low fuel consumption, and low noise.

Every Airman generator is made in Japan with Japanese components. This matters. Plenty of brands carry a Japanese engine inside a canopy built somewhere else to a budget. With Airman, the engine, alternator, canopy, and control system are designed and built as one complete machine.

At OMC Power Equipment, we distribute Airman generators and compressors for the New Zealand market because they are the benchmark we measure everything else against.

Over-engineered where it counts

The easiest way to understand Airman's approach is to look at what they put inside the box compared to competitors at the same rating.

• Where a competitor might fit a Kubota V2203 to a 22kVA generator, Airman fits the larger V2403. The engine is correctly derated, and the extra strength, performance and hardware that comes with the larger and higher spec engine means it works well inside it's comfort zone rather than working at its limit.This translates directly into longer engine life, better response to load steps, and less stress on the driveline.

• Airman alternators feature reinforced windings and additional varnish treatment for a longer service life. They also carry the lowest transient reactance in their class, increasing negative phase sequence current capacity. In plain terms, the alternator copes better with unbalanced loads and motor starting, holds voltage regulation within 0.5%, and produces a clean waveform safe for sensitive electronics.

• The canopy is protected with the same electrodeposition and baked finish process used in the automotive industry. It is a highly effective anti-corrosion treatment. In New Zealand conditions, whether that is coastal salt air, dairy shed washdowns, or a West Coast winter, it is the difference between a canopy that lasts and one that rusts out from the inside.
  
• If a generator runs out of fuel or sits unused for months, most machines need the fuel system manually primed before they start again. Airman's automatic air bleeding system does this itself. Top up the tank, turn the key, and it runs. This feature saves costly callouts for standby sets and hire fleet machines.

• Condensation sitting in an exhaust system corrodes it from the inside. Airman mufflers drain themselves, protecting both the exhaust and the engine over the long term.

Simple controls with smart options

Airman generators come standard with analog controls: switches, gauges, and a key start. There is a strong argument for this on work sites and farms. Analog panels are easy for anyone to operate, there is less to go wrong, and faults are simple to diagnose.

For applications that need auto start, remote monitoring, or mains failure operation, Airman generators are available with a DeepSea controller upgrade, including the DSE7310 MKII. This gives you full auto mains failure capability, scheduling, and remote monitoring while keeping the proven engine and alternator underneath.

Fuel efficiency and long run times

Airman generators pair low-consumption Kubota and Isuzu engines with generous fuel tanks.

• Standard models: The SDG25S runs around 18 hours at 75% load on its 70 litre tank.
• Extended models: The LX and Environmental models push well past 40 hours between refills. The SDG45LX carries a 355 litre fully bunded tank giving roughly 51 hours at 75% load.

For hire fleets, events, and remote sites, this means fewer fuel runs, fewer interruptions, and lower running costs. The extended tanks are fully bunded as standard, with a double-walled chassis and a bund level sensor that warns you before any spillage becomes an environmental problem.

Quiet enough for town, tough enough for site

• Sound levels across the Airman range sit between 55 and 59 dB(A) at 7 metres. To put that in context, that is about the level of a quiet office. The low noise comes from proper engineering: a fully sealed canopy, silent intake manifold, high-performance muffler and exhaust ducting, and improved vibration mounting. This makes Airman a genuine option for urban construction, night works, events, hospitals, and residential standby.

• Airman canopies are noticeably more compact than competitors at the same output. The SDG25S delivers 20kVA prime power from a package measuring 1550 x 700 x 980mm at 610kg dry. That means more kVA on the deck of a ute or service truck, easier craneage, and less real estate taken up on a crowded site.

Backed properly in New Zealand

A generator is only as good as the support behind it. As the distributor for Airman, OMC Power Equipment carries parts, provides technical support, and offers machines for both sale and hire. We get involved early, from sizing and system design through to delivery, commissioning, and ongoing servicing, so the machine you buy is the right machine for the job.

Frequently asked questions

Are Airman generators made in Japan?

Yes. Airman generators are manufactured in Japan by Airman Corporation, founded in 1938, using Japanese Kubota and Isuzu engines and Japanese components throughout.

What engines do Airman generators use?

Kubota diesel engines in the smaller and mid-range models, and Isuzu diesel engines in the larger sets. All run at 1500rpm for long service life at 50Hz.

How long can an Airman generator run on one tank?

The standard range runs 18 to 24 hours at 75% load depending on the model. Extended-tank LX and Environmental models run 40 to 50 plus hours between refills.

Are Airman generators suitable for standby power?

Yes. With the DeepSea controller upgrade, including the DSE7310 MKII, Airman generators handle automatic mains failure, remote start, and remote monitoring for building and rural standby applications.

Can I hire an Airman generator instead of buying one?

Yes. OMC Power Equipment offers Airman generators for both hire and sale across New Zealand.

Talk to us

Whether you are speccing standby power for a building, backup for the dairy shed, or adding reliable sets to a hire fleet, we can help you get the sizing and configuration right the first time. Call OMC Power Equipment on 0800 503 555 or email sales@omc.net.nz. Our advice is free.