by Kyle Molyneux | Wed 12 Feb 2020
New Doosan DX380LC-7 Excavator
With the launch of the new DX380LC-7 40 tonne model, Doosan has completed the company’s 30- to 40-tonne family of Stage 5 excavators, including the new DX300LC-7 30-tonne and DX350LC-7 36-tonne models. The new Stage V excavators are based on the previous Stage IV machines, but introduce several enhancements in operator comfort, machine controllability, productivity, uptime and return on investment, with a focus on low fuel consumption, increased power, robustness and versatility. Key specs of the DX380LC-7 with a 3.95m arm include a bucket capacity of 2.32m3, a digging depth of 8,165mm, a digging reach of 11,930mm and a digging height of 10,940mm.
The DX380LC-7 is powered by the Scania DC09 Stage 5 compliant diesel engine, providing 326hp at 1,800rpm. There are now four power modes available, which help to simplify the operation of the new excavators compared to the more complex choice of eight power modes and SPC combinations in the previous generation machines. The operator is able to set the power mode (P+, P, S or E) in both one-way and two-way working modes.
In common with the DX350LC-7 crawler excavator, the DX380LC-7 features Doosan’s D-ECOPOWER technology, which utilises an electronic pressure-controlled pump within a closed centre hydraulic system to accomplish increases of up to 26% in productivity and up to 12% in fuel consumption improvements, depending on the mode selected. A closed centred main control valve minimises pressure loss, while the electric pressure-controlled pump manages and optimises engine power more effectively. The D-ECOPOWER system uses nine sensors to detect the amount of hydraulic oil necessary to accomplish a specific task and precisely meter the amount of oil required rather than continuously forcing a fixed amount of oil through the system, thereby improving efficiency. Software is utilised to electronically reproduce the full benefits of an open centre hydraulic system with very little energy loss. The hydraulic system and engine horsepower are fully optimised and synchronised, further reducing losses within the system.
As standard, the cab features a new high-quality seat, 8-inch touchscreen LCD panel, 360-degree cameras and DoosanCONNECT wireless fleet monitoring system. Optional extras include ultrasonic sonic detection of obstacles, LED lights, side protection and air compressor.
Read our review of the Doosan DX380LC-7 in the December 2019 issue of Earthmovers Magazine, available to purchase here.
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