New Doosan excavator offers best performance in 100-tonne class
Doosan has launched the new DX1000LC-7 Stage V compliant 100-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 100-tonne market.
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.