Doosan Infracore Construction Equipment has launched the new Stage IIIB compliant DX300LC-3 crawler excavator.
The new ROPS and OPG certified cab offers more space (+6%) for the operator and several convenient features, including direct control through the joysticks, which have new proportional thumb wheel switches and integrated buttons to provide precise, proportional control of attachments.
A new 7-inch colour high quality visual control console offers an attractive display and excellent functionality. All functions can be controlled both from the instrument panel as well as via a new jog/shuttle control next to the joystick, a feature exclusive to Doosan excavators. A new function allowing the operator to select and set engine speed, hydraulic flow and pressure for attachments, with several preset positions, is a standard feature.
A new high-quality, heated air suspension seat reduces operator fatigue, while a new cab suspension system helps to cut vibration by 20% and reduce the sound level in the cab to 71 dBA.
The cab is pressurised to prevent particles from entering the cab. Lighting capability has been increased 100% to facilitate working at night. A side camera is available as a safety option. Other features include fully automatic climate control, a USB port to play music and videos, and more storage compartments for paperwork and other items.
The DX300LC-3 excavator is powered by the Doosan DL08K ‘common rail’ 6-cylinder turbocharged diesel engine meeting Stage IIIB emission regulations through the use of EGR (Exhaust Gas Recirculation) and Diesel Particulate Filter (DPF) after-treatment technologies. At 159 kW, the Doosan DL08K engine in the DX300LC-3 excavator delivers 2% more power at a lower speed of 1800 rpm than the existing DX300LC Stage IIIA model. Factory tests show a 5 to 10% reduction in fuel consumption, depending on the operating mode selected and the work being done.
A new ECO Gauge on the control panel helps the operator to lower fuel consumption by providing real time monitoring of fuel rate and actual engine-percent load. Two new operating modes (P+ mode: Power Plus and L: Lifting) improve controllability and efficiency.
Workload/hour outputs have increased by an average of 6% across the different power modes in the DX300LC-3. A new travel device has increased the maximum travel speed to 5.3 km/h, while the drawbar pull is increased by 4% to 26,200 kg and lifting capacities have been increased by 6%.
New hydraulic pumps and valves increase hydraulic flow by up to 11% and pressure (350-370 bar) to boost front, travel and power functions as well as increase lifting capabilities and reduce cycle times. Overall, the new hydraulic system improves the productivity of the machine through highly responsive controls.