AUSTRALIANEARTHMOVING.COM.AU 112WHAT'S HOT“Not only does it have a new Komatsu Tier 4 Final
compliant low emission engine – which dramatically
cuts emissions compared with Tier 3 and earlier
engines – but our design engineers have greatly
enhanced the hydraulic system for increased power
and efficiency, and significantly beefed up the
undercarriage, swing system and counterweight.
“We’ve improved hydraulic efficiency through higher-
displacement pumps, providing increased flow
output at lower engine RPM, which allows the engine
to operate at its most efficient speed, and we’ve
increased hydraulic pipe size diameters to reduce
hydraulic pressure loss.
“The PC490LC-11 is also the only excavator in this
size class with a closed-centre load-sensing system,
for better fuel efficiency, improved fine control and
simultaneous multiple functions,” she said.
“And in addition to standard hammer and quick hitch
piping, the PC490LC-11 now comes with an additional
service valve for easy setup of a proportionally
controlled secondary auxiliary line.”
Much of the increased operating weight of the
PC490LC-11 compared with the PC450LC-8 is due
to a heavier counterweight and extra heavy duty
undercarriage.
“The heavier counterweight and more robust
undercarriage increase lift capacity by up to 15%,
allowing the use of larger buckets and attachments,
and for the machine to lift heavier loads around sites,”
Amber said.
“In addition, this heavier duty undercarriage provides
added durability and improved operator comfort in
tough working conditions such as quarries, demolition
and heavy construction, and rock-breaking work.“The end result is an excavator that delivers lower
costs per tonne, through its higher productivity and
improved fuel efficiency, matched with durability
and maintenance features that significantly reduce
machine downtime and service costs,” she said.“These machine features, combined with Komatsu’s
industry-leading levels of service and support,
including our Fix It First Time concept, KOMTRAX, our
InSite Fleet Management Centre and Komplimentary
Maintenance offering, all contribute to bringing down
operating costs for Komatsu machine owners,” said
Rickard.Brief specs of the PC490LC-11 are: Operating weight,
48,690 kg; engine, Tier 4 Final-certified Komatsu
SAA6D125E-7 engine rated at 270 kW; bucket size
range, 1.45-2.7 cu m; maximum dig depth, 7755 m
(3380 mm arm option); bucket breakout, 24,400 kgf;
arm breakout, 20,900 kgf.For more information visit:
http://www.komatsu.com.au or call 1300 566 287