Komatsu America Corp.: PC490LC-10

The PC490LC-10 hydraulic excavator from Komatsu America Corp. leans on a Tier 4 Interim engine with 359 hp. At 108,000 lbs., the excavator features improved lifting performance and stability, lower fuel consumption, improved operator comfort and enhanced serviceability to maximize productivity while lowering operating costs, Komatsu says. Operators can select to run the machine in lift mode, which raises the hydraulic pressure to achieve maximum lifting force. To account for the higher lift capacity, the PC490 has strengthened undercarriage components, a reinforced revolving frame and a larger capacity swing bearing. In addition, enhancements have been made within the hydraulic system to reduce hydraulic loss. A new cooling fan, for example, is hydraulically driven, allowing fan rotation to be controlled by the coolant, hydraulic oil and ambient air temperatures.

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