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Productive and reliable

The WA250-6 is a highly reliable equipment due to the fact that most of its main components were designed and manufactured by Komatsu. It has a strong main frame and fully hydraulic maintenance-free oil-bath disc service and parking brakes.

This high production low fuel consumption equipment has a high performance SAA4D107E−1 engine with a 94 kW (126 hp) net flywheel power and is US EPA Tier III and UE Stage 3A certified.

Features

Hydrostatic transmission

The HST system provides quick response during rides and aggressive drive into the pile. The variable flow hydraulic pump feeds the appropriate flow according to the requirements of the traction effort, providing power and efficiency. When high torque is required, this pump feeds 2 engines (low and high speed) for the aggressiveness needed during excavation operations. Also, when slowing down, the HST system acts as a dynamic brake for the drive system.

Variable traction control system

Consists in a pump that produces a variable flow of hydraulic oil, which provides the power needed to move the equipment. This means it is not fixed, because it would be less efficient during low power efforts of the engine and it would produce more effort than needed. Also, the CLSS (Closed center load sensing system) allows to use remnant hydraulic fluids more efficiently.

The variable traction control system makes the equipment more efficient in terms of traction effort. Therefore, makes operations on soft terrain (where there could be slippage) easier, eliminates excessive penetration of the bucket, reduces tire’s slippage during stacking operations, improving efficiency and extending the tires’ service life.

Ecology & economy - Technology 3

Komatsu, following its Ecology and Economy policy, continues to develop engines with high performance low-emission technologies, complying with the most rigorous environmental standards, such as the new EU Stage 3A and EPA Tier III emission regulations.

With this technology, Komatsu introduces its new ECOT-3 engines with total electronic control system; fuel injection (Heavy-duty and high-pressure common rail); exhaust gas recirculation (EGR); air to air aftercooler and a new combustion chamber design; and NOx, PM and fuel consumption reducing systems.

Komatsu

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