Doosan has launched the new DX1000LC-7 Stage V compliant100 tonne crawler excavator, the largest excavator model ever manufactured by the company.
Driven by the most powerful engine in the 100 tonne class, the DX1000LC-7 also has the highest hydraulic flow for this size of machine, providing best-in-class performance, with higher productivity, lower fuel consumption and smoother controls.
Like all Doosan excavators, much attention has been given to operator comfort and safety. The DX1000LC-7 has a new, very spacious operator cab, equipped with ergonomic controls and instrumentation. Special care has been taken to ensure noise is kept to a minimum through enhanced sealing of the engine compartment and extensive use of sound-dampening materials.
All components and assemblies are designed, built and tested to ensure durability. 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 are designed to provide superior reliability and a long service life. The DX1000LC-7 is easy to maintain, further reducing downtime to a minimum.
The DX1000LC-7 excavator is powered by the new stage V version of the well-proven Perkins 2806J diesel engine, providing a high power output of 469 kW (629 HP), more than any other machine in this class. The engine meets Stage V emission 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. The operator can check the status of the DPF via the display on the gauge panel in the cab.
The high output of the engine is combined with a Virtual Bleed Off (VBO) hydraulic system (D-ECOPOWER+), and controlled by electric manipulator (FEH) providing a best-in-class hydraulic flow of (3x 523) – 1569 l/min and a high system pressure of 360 bar, together contributing to the best performance in the 100tonnemarket.
Doosan’s 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 manages and optimises engine power more effectively.
Software is utilised to electronically reproduce the full benefits of an open centre hydraulic system with very little energy loss. The hydraulic system and engine output are fully optimised and synchronised, further reducing losses within the system.
Improved feedback to the operator through the joystick results in improved machine control and less operator fatigue. The acceleration and deceleration of the excavator workgroup functions are smoother, allowing operators to perform repetitive swinging and digging motions with less jerking movements.
Boom and Swing Modes
To provide optimized operations when working with the DX1000LC-7 excavator, the operator can switch between two modes- Boom or Swing- giving priority to boom or swing movements, respectively, so they can best match how they are using the machine to the application they are working on.
Faster working speeds are ensured by the 2-spool Boom Down Regeneration system in the DX1000LC-7, which also reduces fuel consumption. The 2-spool hydraulic system for the bucket cylinder also increases hydraulic flow and the working speed of the bucket, again reducing fuel consumption. The DX1000LC-7also has a boom/arm cylinder lock valve (anti-hose burst valve) as standard for increased safety, preventing accidents caused by hydraulic hose rupture on site.
Comfort and Controllability
Already excelling in spaciousness and ergonomics, the new cab in the DX1000LC-7 is designed to significantly enhance operator comfort and ease of operation. The cab has a new high quality seat and offers more features as standard than other machines on the market, ensuring super controllability and high precision in all applications.
Key new features in the cab include a 8-inch touch-enabled colour LCD gauge panel, providing more information via a 30% larger screen; stereo system integrated in the gauge panel (with Bluetooth streaming function; and keyless start system.
A full camera array is standard, comprising 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.
LED working lamps are also standard on the DX1000LC-7, providing up to 75% better illumination of the workspace around the excavator, ensuring improved productivity in dusk and nighttime work and to help prevent accidents on site.