Hitachi Construction Machinery Asia & Pacific

Hydraulic system HIOS III and new OHC 4-valve diesel engine developed specially for ZAXIS-3.

The new E mode, H/P mode and P mode can be selected to suit job needs. The new E mode can save fuel consumption by up to 17 % compared to the conventional model's P mode, while yielding similar production.

HITACHI developed a new advanced hydraulic technology HIOS III for ZAXIS-3. In addition to the fine controllability. In combined operation of boom lower and arm, pressurized oil from boom cylinder bottom side is delivered to boom cylinder rod side, assisted by boom weight, for boom lowering. At the same time, pressure oil from the pump is delivered to the arm cylinder for arm movement. This new enhanced boom recirculation system is added to the already recognized fine controllability. This mechanism allows an increase of speed in combined operation for 15 %.

We gave the unit even a greater stability during operation by allowing the user to fix the front axle, with a function that locks the front axle cylinder. This lets you concentrate fully on operation, since the axle cylinder automatically locks when you release your foot from the accelerator and the speed is less than 3 km/h.

This system holds the lock and release of the brake along with the movement of the brake pedal. If you press the pedal down once, it holds the brake until the next time you press the pedal.

Yawing vibrations that occur when swing operation is stopped have been decreased by installing a swing dampener valve. This lets the operator smoothly and accurately stop motion at the intended place.

It utilizes no-play disk brake which holds wheel directly without play of final gear. Reliable tire lock on operating front attachment.

New blade features wide and flat shaped bottom, resulting in less road surface damage and reduced mud collection.

The outrigger provides 60 mm greater lifting height compared to the conventional model. This allows ample lift up in rough conditions.