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The package is available for its D375A-6 and D475A-5EO mining dozers and is said to deliver ride comfort levels on par with other machines on the market.
It also has developed a factory-fitted Australian mining spec package, allowing the dozers to be delivered directly from the factory to the mine in a 鈥渕ine-ready鈥� configuration.
Komatsu Australia mining product manager bulldozers and excavators David Laidlaw said Komatsu mining dozers had a good reputation as ripping and dozing machines but did not have the same reputation for comfort and ride.
He said to address the perception on comfort and ride the company had made modifications to the undercarriage, as well as the cab mountings.
鈥淔ollowing trials in Hunter Valley and central Queensland coal mines we can confirm that the ride, vibration levels and operator comfort on Komatsu mining dozers are as good as, or better than, any other machine,鈥� Laidlaw said.
鈥淲e carried out a rigorous independent testing program, comparing a D475A-5EO with the ride enhancement package fitted, a machine without the package and a competitive machine 鈥� and the results show that we have achieved our ride and operator comfort objectives.鈥�
The undercarriage modifications included changes to the bogie and equaliser bar oscillation angles, along with altered cabin mounts to reduce shock loads.
Additional research and testing is continuing into ways to further improve ride and comfort.
Laidlaw said Komatsu鈥檚 鈥渕ine spec鈥� option saved considerable time and expense when preparing and delivering dozers to mines.
The factory fitted mining specification package includes:
- Right- and left-hand access platforms with handrails, toerails, access lights and worklights to give safe, secure access for operators and maintenance crews to the side and rear of the machine
- A batter and starter isolator box
- Centralised grease points
- Manual engine stop switches
- Engine bay maintenance light.
The D475A-5EO has an operating weight of 108.4 tonnes and is powered by a Komatsu SAA12V140-3 Tier II-compliant engine rated at 664 kilowatts.
Its powerplant incorporates a Komatsu-designed heavy duty high pressure common rail injection air-to-air charge air cooling system.
The D375A-6 has an operating weight of 71.64t.
It is powered by Komatsu鈥檚 Tier 3-compliant turbocharged and aftercooled SAA6D170E5 engine rated at 455kW.
It is coupled with Komatsu鈥檚 automatic transmission that selects the optimum gear range depending on the working conditions and load on the machine.
