Doosan unveil new DX225LC-7 crawler excavator
Latest 23-tonne machine offers high performance, increased fuel efficiency and improved operator comfort
DOOSAN have launched the first of their new-generation medium-sized crawler excavators – the Stage V-compliant DX225LC-7.
The machine is also the first Doosan excavator of this size to feature the company’s innovative D-ECOPOWER virtual bleed-off (VBO) technology, providing operators with higher productivity and around 7% lower fuel consumption per hour than the previous Stage IV model, as well as smoother controls.
In addition to higher performance and cost savings, the DX225LC-7 excavator model offers more new features as standard than other machines on the market, including major enhancements in controllability, versatility, operator comfort, uptime and return on investment, with a strong focus on increased productivity and robustness.
The DX225LC-7 also comes with a 14% heavier, 4.9-tonne counterweight for working with heavier attachments such as tiltrotators, and a new lifting eye that forms part of the casting for a push link for the bucket attachment at the end of the arm.
Complementing the increased stability provided by the new counterweight, the Doosan excavator features a new smart hydraulic system that delivers a 30% improvement to attachment work, compared with previous models.
The new system applies a smart hydraulic logic for optimal distribution of the hydraulic flow rate when both the arm and attachment are working simultaneously, with a new priority valve and an additional hydraulic line maintaining continuous hydraulic flow to the attachment, even when the arm is being used.
Another new feature of the DX225LC-7 is the fine swing function which minimizes shaking at the start or stop of a swinging movement, increasing overall on-site safety.
More spacious and ergonomic, the state-of-the-art cab in the medium-sized excavator takes operator comfort and ease of operation to new levels. According to Doosan, the enhanced cab offers more features as standard than other excavators on the market, ensuring super controllability and high precision in all applications.
Key features of the cab include: a new 8in touch-enabled colour LCD gauge panel with 30% larger screen; a stereo system integrated in the gauge panel (with Bluetooth streaming function); a keyless start system; enhanced interior design; improved air-conditioning/defrost performance; an optional 360° AVM (all-around view monitoring) system; ultrasonic obstacle detection (optional); and more LED work lights (optional).
To meet Stage V engine emission regulations, the DX225LC-7 is powered by the latest generation Doosan DL06V diesel engine, which provides 129kW of power at 1,800 rev/min.
To exceed Stage V regulations without exhaust gas recirculation (EGR), the DL06V engine offers a new solution that boosts the quantity of air available during combustion, increasing the temperature of the process and greatly reducing the number of particulates produced. This, combined with super-efficient DOC/DPF+SCR after-treatment technology, ensures minimal emissions.
Four power modes are now available, helping to simplify the operation of the new DX225LC-7 excavator, compared with the more complex choice of eight power modes and SPC combinations on the previous-generation model. The operator can set the power mode (P+, P, S or E) in both one-way and two-way working modes.
In addition, the crawler excavator is factory-installed with Doosan’s state-of-the-art DoosanCONNECT wireless fleet-monitoring system. The DoosanCONNECT system offers a web-based fleet-management solution for monitoring the performance and security of machines and promoting preventative maintenance.