Doosan has continued the introduction of the company’s new generation medium-sized Stage V compliant excavators with the launch of the new DX140LC-7 14.6 tonne, DX140LCR-7 15.6 tonne and DX160HT-7 17 tonne high track crawler models.
All three excavators are powered by the Doosan D34 4-cylinder Stage V diesel engine providing 86 kW (115 HP) of power at 2000 RPM.
SPC3 Smart Power Controls
In all the new excavators, the enhanced fuel efficiency of the engines in combination with a new hydraulic main valve and the new generation SPC3 Smart Power Controls, provides increased fuel saving compared to the previous generation machines. There are four power modes now available on the excavators, 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 machines. The operator is able to set the power mode (P+, P, S or E) in both one-way and two-way working modes.
The DX140LCR-7 is a reduced tail swing model, allowing operators greater flexibility where space is a premium without sacrificing performance. The DX140LCR-7 also offers a new counterweight design that offers enhanced service accessibility.
The new DX160HT-7 High Track model is designed to meet the needs of customers requiring a combination of higher ground clearance, a reinforced track frame and a strong traction system with reinforced upper rollers for work in harsh environments and on projects where larger travelling distances are involved. This new High Track model is particularly suited for constructing roadways, mounding, earthmoving and other duties in the forestry industry.
Increased Comfort and Controllability
The state-of-the-art cab on the DX140LC-7, DX140LCR-7 and DX160HT-7 excels in terms of spaciousness and ergonomics, taking operator comfort and ease of operation to new levels. As well as a new high quality seat, the enhanced cab offers more features as standard than other machines on the market, ensuring super controllability and high precision in all applications.
Other key new features in and around the cab include:
• New 8-inch Doosan Smart Touch screen, giving more information via a 30% larger screen
* DAB audio (Hands-free calling system and Bluetooth)
* Keyless start (Doosan Smart Key) & remote door lock/unlock
* Fully adjustable air suspension seat with heating (with optional cooling function)
* Parallel wiper system and new design pedals
* Improved air flow for defrosting and air conditioning
* 8 x LED work lights as standard/4 more LED lamps as an option
* AVM – Around View Monitor with 360° cameras (option)
The new excavators utilise a new smart hydraulic system that offers an improvement of around 30% in attachment work, compared to previous excavator 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.
New Tiltrotator Mode
There is a new Tiltrotator Mode on the control panel in the new excavators, which can be selected to ensure an optimized hydraulic flow and helps to maximize the accuracy of tiltrotator work by eliminating back pressure. This new tiltrotator mode is a special two-way flow mode, but it is managed by the EPOS like a one way flow mode, with direct return to the tank in each direction, to avoid back pressure and increase flow and controllability.
New Fine Swing Function
Another standard new feature is the Fine Swing function which minimizes the shaking that a lifted object undergoes at the start or stop of a swing movement with the excavator, to increase the safety of nearby workers and to prevent damage caused by the object falling from the excavator. When Fine Swing activates, the overrun disappears, allowing the excavators to smoothly reach maximum swing speed, whilst removing the shock from the turn reversal at the moment of stopping, resulting in a smooth stop.
New Lifting Eye
The new excavators also incorporate as standard a new lifting eye that forms part of the casting for the push link for the bucket attachment at the end of the arm. The new lifting eye has a maximum capacity of 5 tonne and has a special bush insert to prevent deformation of the lifting hole.
DoosanCONNECT Telematics System
All three models are factory-installed as standard with Doosan’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. It is available as a standard feature on all new Doosan excavators (from 14 tonne), all new Doosan wheel loaders and Doosan ADTs.
For more on Doosan construction equipment, please visit the website: www.eu.doosanequipment.com
