IRNMARCH 2015
(EGR), a diesel oxidation catalyst (DOC)/diesel
particulate filter (DPF) and selective catalytic
reduction (SCR).
“We are pleased to continue our long partnership
with Atlas Copco, the global leader in compressed
air solutions,” said Carl Micu, manager of OEM NA/
SA engines sales and worldwide drivetrain sales at
JohnDeere Power Systems.
“We’re confident that our Final Tier 4/Stage IV
solutions will not only meet stringent emissions
regulations, but also provide the responsive
performance, reliable uptime and low cost of
operation that Atlas Copco customers need to have
success.”
Mark MacInnis, engineering manager with
Atlas Copco added, “John Deere took a building-
block approach in the development of emissions
technologies over the years. It was a gradual
approach that made integration from tier to
tier straightforward. For an original equipment
manufacturer (OEM), that’s an advantage.”
RTCGroupclaimsoil-freeadvantage
Netherlands-based rental company RTC Group has further expanded into the compressed air market,
offering containerisedpackages for oil-free compressors.
The company, which provides high pressure compressor rentals and rock drilling equipment for the
construction and drilling industries, said it had acquired a large-volume oil-free rental machine for the
Europeanmarket.
The containerised package consists of a 530 kW oil-free centrifugal air compressor, refrigerant air dryer
andall thenecessaryauxiliaryequipment to start andoperate thepackageon itsown.
With a capacity of 4200m
3
/hour and a pressure range from 5up to 11 bar, the company said thismachine
was unique in themarket. It said regular diesel-driven compressorswere half the capacity, burning around
15000 litresof diesel fuel perweek.
RTC pointed out that the loss of compressed air supply can put a company's operation completely out of
production. Flexibilityandquick response time is critical inmany industries, it said.
“We are specialised in large centrifugal compressed air rental solutions” said managing director and
ownerHenkUphoff.
“Our equipment canbeon themove to the customerwithinhoursof the first emergency call.”
RTCGroupwasestablished in2013byMrUphoff, the former IngersollRand,Doosan InfracoreandMachinery
resalemanager.
COMPRESSORS
42
John Deere Power Systems’ PowerTech Tier 4 Final /Stage IV
engines will power three new air compressors from Atlas Copco –
the XAS 750, XAS 1800 and XATS 1050 (pictured) JDmodels
For its part, Doosan claims to be the only
compressor supplier to use its own engines
within its compressor models - a fact which the
manufacturer said would give it advantages in
terms of aftermarket support.
At this year’s World of Concrete show in Las
Vegas, US, (running from 3 to 6 February), Doosan
announced that its US Tier 4 Final-compliant 37 kW
D24 4-cylinder engine was now being used in its
P185portable compressor.
TheP185 candeliver 185 cfmwith 100psi
at 185 cfm (5.2m
3
/minute) of air at 100
psi (6.9 bar). Doosan Portable Power
assistant product marketing
manager Josh Goodman, said
that the unit offered superior
cold starting characteristics, 7% better fuel
efficiency than the model it replaces, 10 hours of
running time between fuel refills, 500 hour service
intervals and quite running – the unit registers 74
dB(a) of noise at a distance of 7m.
Mr Goodman said that other units would follow
featuring other Doosan engines, as well as the D24
at different power ratings. “We’re not done with
this engine yet,” he said. “It can go in a lot of our
products.”
Airend development
At the higher end of the product range, Doosan has
developed theHR350 airend – the component which
compresses air.
This is a two-stage unit rated at 350 psi (24 bar).
Withanoutput of 900 to 1170 cfm (1529 to 1988m
3
/h)
it is designed for large compressors in drilling and
similar applications.
RusWarner, global airproductsmanageratDoosan
Portable Power said two more airends single-stage
airends will be rolled out over the next 18 months
for smaller classes of compressors. He added that
thesewouldbe available toother OEMs and in some
cases couldbe retrofitted to existingmodels.
And Doosan has also expanded its compressor
range available in the Middle East and Africa
– it now offers its full range of compressed air
applications from construction, rental, utilities and
manufacturing to quarrying, waterwell drilling and
the oil and gas industry, with free air deliveries
from 185 to 1500 cfm (5.0 to 42.5m
3
/min) at output
pressures from 100 to 500 psi (7 to 35 bar) in the
region.
As well as awide selection of Tier 3 High Ambient
models, it said the rangealso included several Tier 1
or Tier 2 engine-poweredmodels, suited to the fuel
quality levels found in these regions.
