Technology, reliability and stability

GD705-5

Operating weight 22,150 kg (48,900 lb)
Net flywheel power (SAE) 250 hp (186 kW) @ 1,950 rpm
Blade length 4.3 m (14.1 ft)

Productivity and efficiency

The new hydraulic variable displacement piston pump reduces pressure loss, transmission improvement and axles to improve energy saving, and the sophisticated electronic control of the engine operations to achieve optimal energy efficiency combined for maximum performance with a rise of a 5% in work rate and a 5% in fuel consumption in the field, compared with the GD705A-4.

Features

Torque converter lock-up (automatic mode)

With the torque converter lock-up (Automatic mode) or direct drive (Manual mode), the operator selects the best transmission for the operation. If the machine needs more power for difficult grader operations or fine control at low speeds, the operator can select the automatic mode. With the torque converter the operator can achieve a massive traction force and control. More importantly, it can be achieved a precise control during low speed without gear shifting or using the brake/acceleration pedal. The automatic mode can be used on the 8 speeds. If higher traveling or snow removing speeds are needed, the operator can select manual mode. The operator can enjoy the best of both worlds.

Suspension seat

The fabric-covered seat’s suspension can be adjusted according to the operator’s weight (Initially has a standard setting). The suspension seat dampens the vibrations generated by the machine and reduces operator fatigue. The seat has fold-up armrests and a retractable seat belt.

Circumference dynamic noise

The dynamic dynamic noise is lowered significantly to 7 dB (A) compared with the conventional GD705A-4 by different types of countermeasures, like the hydraulic driven cooling fan, the variable displacement pump, among others.

Exceptional visibility

Excellent visibility by hexangular cab with front Y shape pillar and rear layout side pillar (Pending patent) boost operator’s confidence and productivity in all grader operations. Well-positioned blade linkage provides an unobstructed view of the moldboard and front tires. The tapered engine hood provides good visibility to the rear of the machine, especially the rear ripper.

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 (equivalent).

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.