New Doosan Machines: Meet the DX800LC-7 and DX420LC-7

We are pleased to announce the launch of two new DOOSAN Stage V compliant crawler excavators including the largest excavator model ever manufactured by the company – the DX800LC-7.

DX800LC-7

The new DX800LC-7 Stage V compliant 80 tonne crawler excavator is the largest excavator model ever manufactured by Doosan.

Driven by the most powerful engine in the 80 tonne class, the DX800LC-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 DX800LC-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.

The DX800LC-7 excavator is powered by the new stage V version of the well-proven Perkins 2506J diesel engine, providing a high power output of 403 kW (548 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.

Highest Hydraulic Flow in 80 t Class

The high output of the engine is combined with a Virtual Bleed Off (VBO) hydraulic system (D-ECOPOWER+), providing a best-in-class hydraulic flow of 1008 l/min and a high system pressure of 343 bar, together contributing to the best performance in the 80 tonne market.

Choice of Boom and Swing Modes

To provide optimized operations when working with the DX800LC-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.

Increased Comfort and Controllability

DX420LC-7

The new DX420LC-7 Stage V 43-tonne crawler excavator provides best-in-class fuel efficiency and productivity. To meet Stage V engine emission regulations, the DX420LC-7 excavator is powered by the new Scania DC13 Stage V compliant diesel engine, providing 257 kW (344.4 HP) of power, the biggest engine in this machine segment.

Using super-efficient DOC/DPF+SCR after-treatment technology, the Scania engine offers a new solution to exceed Stage V regulations, not requiring exhaust gas recirculation. This is combined with the new generation Smart Power Control Technology (SPC3) to provide 3-10% better fuel efficiency (m3/l) than the previous DX420LC-5 model.