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2022 / 2023 Edition

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Doosan enhance large crawler excavator range

Doosan DX490LC-7 excavator

New standard features and options now available on large machines from 36 to 53 tonnes

SEVERAL new standard and optional features are now available on large crawler excavators from Doosan, covering five models with operating weights from 36 to 53 tonnes, including the DX350LC-7, DX380LC-7, DX420LC-7, DX490LC-7, and DX530LC-7.

The main changes are in the cab and take operator comfort and ease of operation to the next level. As well as a new high-quality seat, the enhanced cab is said to offer more features as standard than other machines on the market, ensuring superior controllability and high precision in all applications.

Standard features include: Keyless start (Doosan Smart Key) and remote door lock/unlock; Parallel wiper system covering a larger window area; Operator ID/password functionality; Remote diagnostics functionality; New heating and cooling seat (cooling optional); DAB audio plus hands-free call system; 11 LED work lights as standard (two more optional); and Around View Monitor (AVM) with 360° cameras (ultrasonic sensors optional).

The newly designed operator’s seat includes a seat belt alarm as standard and offers an optional ventilation function. The same design is applied to standard and optional seats, but seats with the optional ventilation system have three-stage heating controls while the standard seat has two-stage heating controls, as before.

The 8in wide Doosan Smart Touch screen provides easy scrolling through the different menus available, providing a wide choice of work and power modes to suit the application being undertaken.

The Doosan Smart Key allows the operator to lock and unlock the door remotely and start or stop the engine. Using just one button on the Smart Key, the operator can also turn on all of the machine’s LED lights, with 11 as standard and two more optional.

Available as standard, a 360° around view camera system maximizes safety on the job site by giving the operator a full view of the machine’s surroundings, allowing the operator to see a top-down view of the area outside the machine. The camera display is separated from the gauge panel.

In all the large excavators, the main control valve (MCV) has also been changed, as standard, to a Doosan Mottrol MCV with no change in performance.

With the addition of the DX420LC-7 model, all of the latest versions of these Doosan large excavators now incorporate Doosan’s innovative D-ECOPOWER technology, providing operators with higher productivity and lower fuel consumption per hour, as well as smoother controls.

The D-ECOPOWER technology focuses on the role of the hydraulics system and demonstrates Doosan’s continuous iteration of all the processes and components utilized in the company’s new-generation products to achieve unprecedented levels of diesel energy efficiency.

Doosan’s D-ECOPOWER technology utilizes an electronic pressure-controlled pump within a closed-centre hydraulic system to achieve an increase of up to 26% in productivity and up to a 12% improvement in fuel consumption, depending on the mode selected. The closed-centred MCV minimizes pressure loss, while the electric pressure-controlled pump manages and optimizes 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 utilized 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 optimized and synchronized, further reducing losses within the system.

Improved feedback to the operator through the joystick results in improved machine control and less operator fatigue. The acceleration and deceleration of the excavator workgroup functions are smoother, allowing operators to perform repetitive swinging and digging motions with less jerking movements.

All Doosan large excavators are factory-installed with the company’s state-of-the-art DoosanCONNECT wireless fleet-monitoring system. The DoosanCONNECT system offers a web-based fleet-management solution which is very useful for monitoring the performance and security of machines and promoting preventative maintenance.

As a leading brand in information and communications technology (ICT), Doosan offer customers lifetime-free cellular service with all the large excavators. This means that customers can use the DoosanCONNECT service without any limitation as long as they use the service with a cellular network. Satellite service will be offered free-of-charge for a three-year period.

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