Komatsu D375A-6 dozer

Komatsu Australia has released the D375A-6 dozer – designed for mining, quarry and heavy construction applications

Komatsu D375A-6 dozer
Komatsu D375A-6 dozer
  • Increased engine power
  • Field-proven lockup torque converter and automatic transmission, state-of-the-art electronic control technology
  • New blade design and increased capacity
  • Easy-to-read multi-function monitor
  • Improved operator control, through Komatsu's hydraulic control system (CLSS)

The new D375A-6 is powered by Komatsu's Tier 3-compliant turbocharged and aftercooled SAA6D170E-5 engine rated at 455kW (Net), a 64kW or 16.37 percent increase in engine power compared with the previous Komatsu D375A-5 dozer.

The fuel-efficient engine ensures superior performance in both ripping and dozing work, according to Michael Hall, Komatsu Australia's national product manager mining.

"Increased engine power and reduced fuel consumption is just one feature that is unique to Komatsu and when coupled with Komatsu's automatic gearshift transmission and lockup torque converter the results are groundbreaking," he says.

"Komatsu's automatic transmission selects the optimal gear range depending on the working conditions and load on the machine, ensuring the machine is always operating at maximum efficiency.

"These performance, productivity and efficiency benefits are achieved through Komatsu's philosophy of integrated design, which ensures that all components, powertrain, frame, hydraulics, electronics are designed to work together," says Hall.

Ripping performance is further enhanced through Komatsu's electronic powertrain control system, which results in an efficient drawbar pull, putting more power to the ground.

In dozing operations, Komatsu's new Fully Universal (Full-U), and Semi Universal (Semi-U) blades allow for increased production without increasing blade width or reducing digging force. The newly designed sectional shape increases load-hauling capacity during dozing operation.

"Overall dozing capability has significantly increased compared with the previous model, without compromising machine balance or operating cost," Hall says.

"Komatsu production figures indicate that overall productivity of the D375A-6 is up nine percent compared with the previous model, while fuel consumption - despite having a higher-horsepower engine - has reduced by more than three percent.

"That translates into more cubic metres of material moved or ripped per litre of fuel, a significant saving for mine operators, contractors and quarries alike," he says.

Also new on the D375A-6 is a package of "standard mine" specification options, ensuring the dozer can be delivered directly from factory to minesite in a "mine-ready" configuration.

These include:

  • Right- and left-hand access platforms with handrails, toerails, access lights and work lights, giving safe, secure access for operators and maintenance crews to the side and rear of the machine
  • High mounted HID (high-intensity discharge) headlights for safer working at night
  • A battery and starter isolator box
  • Centralised grease points
  • Manual engine stop switches
  • Engine bay maintenance light

"This option saves considerable time and expense, and ensures that mine specification requirements are manufactured and installed to Komatsu's exacting production standards prior to being shipped to New Zealand or Australia, and comply to ISO engineering standards," says Hall.

"These initiatives eliminate the need to undergo significant modification and fabrication, to meet the high standard mine-specifications required.

"The bottom line for owners and operators of this new dozer is a significantly improved cost-per-tonne performance," he says.

For more information contact Komatsu NZ, ph 0800 KOMATSU (0800 566 287), visit or email .

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