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Komatsu debuts 112-tonne dozer

Hot off the back of launching three new excavators, Komatsu Europe has also announced the launch of the 112-tonne D475A-8 crawler dozer with improved production levels and new features for comfort and safety. Its powerful and economical Komatsu engine integrates the latest emission control technologies and fuel-saving features. Increased engine power provides faster reverse climbing speed, lower cycle times and a drastic increase in productivity, Komatsu says.

The D475A-8 has an operating weight of 112,600kg. A new Komatsu SAA12V140E-7 engine, EU Stage 5 compliant, provides 934hp at 2,000rpm in forward gear and 1,040hp at 2,000rpm in reverse. For greater efficiency during long pushes, the torque converter lockup clutch can be automatically engaged. Engine power is then sent directly to the transmission, increasing ground speed and machine efficiency, for less fuel consumption and faster cycle times.

At any time, the working mode can be set to either ‘P mode’ for maximum production (Power) or ‘E mode’ for energy-saving operation (Economy). Combined with the automatic or manual gearshift mode, this allows to select optimal machine operating conditions for the work at hand. Standard features can be activated by the operator for comfortable operations and high productivity.

The variable giant ripper is ideal for digging through tough material. The Auto Downshift function, reverse slow mode or Track shoe slip control mode are all easily available and can be quickly cancelled. The K-Bogie undercarriage system increases the length of track on ground to improve machine stability and traction. The D475A-8's main frame enhances machine stiffness by 125%, and increases its durability. The new mono-blade linkage provides less blade sway movement and extends the maintenance intervals of blade joints. Meanwhile, a swing fan gives easy cleaning access to the front-side of the radiator core. 

Key features of the cabin include new dampers for the mounts, a reclining air-suspension seat, and a new equaliser bar shoulder pad and upgraded K-bogies that further increase driving comfort. Noise and vibrations are said to be greatly reduced, too. There’s also a large, multi-lingual high resolution LCD monitor, and refreshed steering console/equipment lever layout.

The layout for the steering console and work equipment lever was renewed, and the height of the steering console can be adjusted electronically. The Palm Command Control System (PCCS) is ergonomically designed to provide the operator with a relaxed posture and superb control. Gear shifting is simplified with push buttons. The electronically-controlled work equipment joystick allows to move both the blade and the ripper quicker and more accurately than ever before.

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