Doosan launches company’s largest ever excavator

DOOSAN has launched the largest excavator in the firm’s history.

The DX1000LC-7 is a Stage V-compliant, 100-tonne crawler digger, which Doosan said also has the highest hydraulic flow for this size of machine.

The model boasts a new ‘very spacious’ cab, equipped with ergonomic controls and instrumentation. To ensure noise is minimal, there is enhanced sealing of the engine compartment and use of sound-dampening materials.

Multi-stage filters and features such as track guards and cylinder guards for the boom and arm, the auto grease system, and greased and sealed track links, have been designed to provide ‘superior reliability and a long service life’, the manufacturer added.

The excavator is powered by the new stage V version of the Perkins 2806J diesel engine, providing a high power output of 469 kW (629 HP). The engine meets Stage V regulations by utilising exhaust gas recirculation, selective catalyst reduction, diesel oxidation catalyst and diesel particulate filter (DPF) after-treatment technologies. The DPF automatically regenerates every 25 hours and the excavator continues to work unaffected during this regeneration phase.

Doosan revealed its D-ECOPOWER+ FEH technology utilises an electronic pressure-controlled pump within a closed centre hydraulic system to optimise productivity and fuel consumption, depending on the mode selected. A closed centred main control valve minimises pressure loss, while the electric pressure-controlled pump is said to manage and optimises engine power more effectively.

Software electronically reproduces the benefits of an open centre hydraulic system with  little energy loss, Doosan added. The hydraulic system and engine output are also fully optimised and synchronised.

The acceleration and deceleration of the excavator workgroup functions are described as ‘smoother’, allowing operators to perform repetitive swinging and digging motions with less jerking movements.

Operators can switch between two modes – Boom or Swing – to best match how they are using the machine to the application they are working on.

New features in the cab include an 8-inch touch-enabled colour LCD gauge panel; stereo system integrated in the gauge panel (with Bluetooth streaming function); keyless start system; improved air conditioning/defrost performance; full LED lights pack; and side protection and catwalks.

There is a front camera, two side cameras and a rear camera. The camera display is separated from the gauge panel and provides full visibility around the excavator and allows the operator to see a top-down view of the area outside the machine. This is combined with an AVM (around view monitoring) system as standard.

The DX1000LC-7 is factory-installed with Doosan’s DoosanCONNECT wireless fleet monitoring system.

The machine is primarily intended for mining and quarrying applications, removing overburden and loading large amounts of material into ADTs or rigid frame trucks. The DX1000LC-7 may also be operated on large construction and infrastructure projects, particularly where considerable amounts of material need to be excavated and stockpiled or loaded into trucks to be moved.