Komatsu dozer range extends efficiency and cost-saving benefits

Komatsu Australia has expanded its dozer range with the release of three new machines featuring the intelligent Machine Control (iMC) system.

The new dozer offering includes the D65EXi/PXi-18 (21-23 tonnes operating weight), the D85EXi/PXi-18 (29.5-30.5 tonnes) and the D155AXi-8 (41 tonnes), which follow the launch of the D61EXi/PXi-23 in 2014.

In addition, the new dozers are the first Komatsu machines fitted with the company’s low emission tier four final engines, which aim to combine performance with reduced fuel consumption.

According to Aaron Marsh, Komatsu Australia’s technology solution expert team manager, smart centre, the iMC dozer concept allows all machines in this range to carry out both bulk and final trim dozing in fully automatic mode from start to finish.

“This allows them to significantly increase productivity and efficiency – up to twice as productive as dozers fitted with bolt-on third party machine control systems according to Australian users and operators – while reducing the cost of each metre of material moved,” Marsh said.

Each model in the iMC dozer range incorporates a factory-installed 3D GNSS (global navigation satellite system) machine control system.

“Because the machine control system is fully integrated, it eliminates the need for coiled cables between machine and blade, there is no need for the operator or service technicians to climb up on the machine to remove and replace antennas or masts, no need for daily connections and recalibrations,” Marsh said.

“An enhanced sensor package combined with an intelligent logic system provides for finish grade accuracy in a fully integrated system without the need for traditional blade-mounted sensors, which can be subject to damage, theft or vandalism.”

The integrated machine control system automatically controls blade elevation and tilt according to target design data, which uses common industry standard design data software and systems.

Komatsu’s tier four final engines, featured in the three new dozers, comply with US EPA certification. Based on Komatsu technologies developed over many years, Marsh said these new engines lower nitrogen oxides (NOx) and particulate matter (PM) by more than 90 per cent, compared with tier three-compliant engines.

“Through our in-house development and production of engines, electronics, and hydraulic components, we have achieved significant advances in technology, delivering high levels of performance and efficiency across virtually all conditions,” Marsh said.

This engine technology, combined with Komatsu’s Sigmadozer blade and automatic/torque lockup transmission system, result in fuel efficiency improvements of between 20-30 per cent per metre of dirt moved.

“All three new dozers deliver high levels of productivity and fuel economy through our Sigmadozer blade, automatic transmission with lockup torque converter, and new tier four final engines,” Marsh said.

“Our Sigmadozer blade, based on completely new dozing principles, dramatically increases production, as well as significantly improving fuel efficiency compared with conventional dozers.”

As with all new Komatsu equipment, the dozers are covered by the company’s KOMTRAX remote monitoring system, backed by its ICT (information communications technology) capabilities to maximise machine safety, productivity, uptime and availability, the company stated.

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