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New-generation excavator from Doosan

Latest DX300LC-3 crawler excavator offers increased performance and better economy

DOOSAN Infracore Construction Equipment have launched their new Stage IIIB-compliant DX300LC-3 crawler excavator, which has been designed to meet customer demands for higher productivity, fuel savings, controllability, comfort and reduced operational costs in quarrying, earthmoving, road building, demolition, material handling and plant hire applications.

The DX300LC-3 excavator is powered by a Doosan DL08L common-rail six-cylinder turbocharged diesel engine, which meets Stage IIIB emission regulations through the use of exhaust gas recirculation and diesel particulate filter after-treatment technologies.

At 159kW, the excavator delivers 2% more power at lower rev/min (1,800) than the existing DX300LC Stage IIIA model. Factory tests have also shown a 5–10% reduction in fuel consumption, depending on the operating model selected and the work being done.

In addition, a new Eco gauge on the control panel helps the operator to reduce fuel consumption by providing real-time monitoring of fuel rate and actual engine-percent load. Two new operating modes (Power Plus and Lifting) help improve machine controllability and efficiency.

According to Doosan, workload per hour outputs have increased by an average of 6% across the different power modes on the DX300LC-3. A new travel device has increased the maximum travel speed to 5.3km/h, while the drawbar pull has been increased by 4% to 26,200kg and lifting capacities have improved by 6%.

New hydraulic pumps and valves have boosted pressure (350-370 bar) and hydraulic flow by up to 11%, to improve front, travel and power functions, as well as increase lifting capabilities and reduce cycle times.

The DX300LC-3 excavator also has a more robust undercarriage with longer durability in the boom and arm, extending mean time before failure by over 30%. The engine bonnet is split into four parts to improve serviceability, and components such as filters, valves, and batteries are all within easy reach for maintenance work.

The machine also offers increased operator comfort thanks to a new ROPS- and OPG-certified cab that provides more space and several convenient features, including direct control through the joysticks, which have proportional thumb wheel switches and integrated buttons for precise control of attachments. A new, high-quality, heated air-suspension seat reduces operator fatigue, while an enhanced cab suspension system helps to cut vibration by 20% and reduces the in-cab sound level to 71dBA.  


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