Doosan in action


Doosan DX420LC Excavator Wins Quarry Battle


Waterloo, Belgium. A Doosan DX420LC crawler excavator has been purchased by Oberrheinische Baustoff GmbH (ORB) following a demanding three-month long competitive selection process to find a new machine for the company’s granite quarry in Rickenbach in the Black Forest region of Germany. The DX420LC excavator was supplied by the authorised Doosan dealer, F. Schünke, based at Wehr.

With the previous excavator at the quarry definitely showing its age, ORB invited various manufacturers to provide excavator models to compete in the stone quarrying test to find a replacement. Quarry work places especially high demands on excavators: as well as power, robustness and operator comfort, the machines must also offer minimal fuel consumption, a decisive criterion in the selection process. 

At the end of the test, the Doosan DX420LC excavator was the clear winner.  Markus Blum, a machine operator at ORB, is very impressed by the performance of the machine working on the hard Black Forest granite. He found the fuel consumption of the DX420LC especially impressive, the lowest in the test and up to 35% less than the other machines in the group.  Markus Blum is also happy with the driver comfort offered by his excavator.  The spacious cab, good visibility, the comfortable seat and air conditioning provide the best conditions, allowing Markus to work comfortably for hours at a time.

The Doosan DX420LC excavator

The platform for the excellent combination of productivity and efficiency in the DX420LC is the common rail diesel engine powering the machine. The engine provides 218 kW of power at 1800 RPM and offers a maximum torque of 1373 Nm at 1300 RPM. The common rail technology and 4 valves per cylinder optimise combustion and minimise emissions. When combined with the new e-EPOS system (Electronic Power Optimising System), which communicates directly with the engine management system via a Controller Area Network (CAN), this results in significantly reduced fuel consumption.                            

Good service is essential

ORB places a high value on the advice and aftersales service available from F. Schünke to support the DX420LC excavator. As the local authorised Doosan dealer, F. Schünke rents and sells Doosan and Bobcat branded construction equipment as well as attachment and accessory ranges from other reputable manufacturers.  ORB and Schünke have previously worked together as customer and supplier through the rental business at Schünke. 

Norbert Buchheit, Managing Director of ORB, commented: "In addition to the performance capabilities of the machine and their proximity, Schünke was chosen for the positive experience we have had with regard to the dependability and service offered by the company."

ORB was founded in 1995 following the takeover of the company, Schuck, by the Swiss companies, Ernst Frey AG and Ziegler AG. In addition to quarrying, ORB also has asphalt mixing facilities and provides products mainly for road construction and flood protection.

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