Doosan launch new DX300LC-5 crawler excavator
Latest machine provides 27% more engine power and 30% boost in torque than previous LC-3 model
DOOSAN Infracore Construction Equipment have launched their new 30-tonne DX300LC-5 Stage IV-compliant crawler excavator, providing significantly improved performance compared with the previous Stage IIIB LC-3 model.
Bucket, arm and swing forces in the DX300LC-5 remain the same as the LC-3 model, but the drawbar pull has increased by 8%. The operating weight of the new excavator has increased by 900kg, leading to increases in lifting capacities of 1% over the front and 5% over the side.
Featuring a distinctive new styling scheme, the LC-5 excavator range improves on the already high standards set by the previous LC-3 line-up, adding enhanced comfort and controllability together with new features to increase fuel efficiency, uptime and return on investment, with a focus on delivering more power, robustness and agility.
The DX300LC-5 excavator is powered by a Scania DC9 five-cylinder diesel engine, with an output of 202kW at 1,800 rev/min, which provides a 27% increase in engine power and a 30% boost in torque over the LC-3 model. The engine meets Stage IV emission regulations without the need of a diesel particulate filter (DPF) through the use of cooled exhaust gas recirculation (EGR) and selective catalyst reduction (SCR) after-treatment technologies.
To help meet Stage IV regulations, Doosan have added a mass-airflow sensor and exhaust brake to the engine. The airflow sensor allows the electronic control unit to improve the management of airflow thanks to a variable-geometry turbocharger, and to optimize fuel delivery to the combustion chamber based on air intake volume and rev/min.
As well as the Scania engine, new features have been introduced on the DX300LC-5 machine that result in an average 10% reduction in fuel consumption compared with its Stage IIIB predecessor.
Among these features is: a new trip meter setting screen that allows operators to check fuel consumption daily (or over a desired period) directly from the control panel; an auto shut-off function that provides automatic shutdown for the engine after a pre-set time when the machine has been idling for a specified time; and a special Doosan-developed Smart Power Control (SPC) system that optimizes the balance between the pumps’ output and diesel engine.
SPC is standard on all LC-5 models and, according to Doosan, tests against previous generation machines have demonstrated additional fuel savings of up to 5%. The SPC system has four working modes (E, S, P, P+).
The DX300LC-5 model is factory-installed with CoreTMS – a new state-of-the-art wireless fleet-monitoring system previously not available as standard on Doosan excavators but now incorporated in all new LC-5 generation machines above 14 tonnes.
The CoreTMS system provides comprehensive information on machine performance in dual mode (satellite and GSM), which has been upgraded to communicate directly with the EPOS system on a Doosan excavator.
Already spacious and ergonomic, the new cab in the DX300LC-5 machine has been further refined for superior operator comfort and ease of operation. The cab offers greater controllability with a new system that allows attachments to be operated from either the joystick or a two-way pedal. Users also have the unique jog shuttle switch which remains a feature exclusive to Doosan excavators worldwide.
All current options including narrow tracks, short and long arms, articulated boom, shoes and hydraulic lines are available on the new DX300LC-5 excavator. A 10m boom and 7m arm will offer a 17.5m reach for special applications.
