New Doosan DX165WR-7 Reduced Radius Wheeled Excavator
Doosan has launched the DX165WR-7 Stage V compliant wheeled excavator, a new short tail machine that is perfect for jobs in tight spaces, particularly in urban areas or on narrow roads with heavy traffic...
The DX165WR-7 is built with the same undercarriage as the new DX160W-7 Stage V model, providing an optimal centre of gravity thanks to the long wheel base and the ideal weight distribution. As a result, the DX165WR-7 offers maximum performance, combining the very short swing radius with the best stability and lifting capacities for this class of machine.
Providing the extremely precise, powerful and smooth digging control required for trenching and lifting work, the DX165WR-7 provides significantly higher performance in every area than the previous generation Stage IV machine. Like Doosan’s other new ‘DX-7’ wheeled excavators, the DX165WR-7 brings together enhanced comfort, increased tool carrier capability and novel operator assist features, with new developments to boost fuel efficiency, uptime and return on investment, with a focus on increased power, robustness and agility.
New State-of-the-Art High Comfort Cab
The new state-of-the-art cab on the DX165WR-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.
The cab features as standard a deluxe steering wheel with a chrome plated spoke and logo. The new two spoke wheel design provides increased operator visibility. The steering column also has a new design including an 80 mm telescopic function, which allows the operator to bring the steering wheel closer to them, so that they can find their optimal driving position.
In addition, there is a new tilting lever, providing a 15-degree tilt towards the operator, to increase visibility over the top of the steering wheel, when they are doing trenching work, for example. The narrower design of the steering column also contributes to enhanced visibility.
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
* 7 x LED work lights as standard
* 4 more LED lamps as an option
* AVM - Around View Monitor with 360° cameras (option)
Enhanced Tool Carrier Capability
The DX165WR-7 offers improved front movement for rotating tools such as mulchers and the working range for articulated fronts has also been improved. The articulated boom cylinder stroke has been increased whilst the mounting position remains the same. A lock valve has now been added on top of the boom cylinder, to prevent unexpected releasing of the articulated boom cylinder when doing digging work.
The DX165WR-7 incorporates an impressive 3.3 tonne counterweight as standard, for both monoboom and articulated boom configurations, but can be equipped with an optional heavier 3.8 tonne counterweight. This contributes to the higher lifting and digging capacities in the DX165WR-7, compared to the previous generation model. With the optional 15% heavier counterweight, the DX165WR-7 is particularly suited for working with heavier attachments such as tiltrotators.
New Tiltrotator Mode
There is a new Tiltrotator Mode on the control panel in the DX165WR-7, 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.
To accommodate the heavier counterweight, the DX165WR-7 is equipped with the heavy duty ZF3060 axle. The DX165WR-7 also has a new upper structure providing the space and durability for the standard and optional heavier counterweights and articulated fronts. By adopting bolt-on type assembly, there is an increased overhang on the rear/front undercarriage, providing even better stability.
Complementing the increased stability provided by the new counterweights, the DX165WR-7 has a new smart hydraulic system that offers an improvement of around 30% in attachment work, compared to the previous excavator model. 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 Operator Assist Features
The DX165WR-7 wheeled excavator offers as standard the new Auto Digging Brake feature, which automatically holds the service brake in position when the vehicle stops (speed is zero), without the driver having to step on the brake pedal. The driver can activate or deactivate the Auto Digging Brake function by pressing the Auto Digging Brake button on the control panel. When the accelerator pedal is then pressed, the Auto Digging Brake function is released.
Joystick Steering is a new option, enabling the driver to steer the machine by using the joystick thumbwheel (without using the steering wheel) when working and driving in the work mode. The Joystick Steering system only works under 20 km/h when first or second speed gears are engaged. The function is activated or deactivated by pressing the thumbwheel steering button on the control panel for at least one second.
The Load Isolation System (LIS) is another new option that enhances the operator's driving comfort by mitigating the impact transmitted to the front of the machine, when driving off road on uneven and tough terrain. The Boom Suspension (LIS) function is also actuated by pressing a button on the control panel - it can be activated when the driving speed is 5 km/h ± 0.5 km/h or higher, and the function is deactivated at 4 km/h ± 0.5 km/h.
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 operator comfort with smooth movements and to help to protect the safety of nearby workers, whilst preventing damage caused by the object falling from the excavator.
The DX165WR-7 wheeled excavator incorporates 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.
SPC3 Smart Power Controls
To meet Stage V engine emission regulations, the new DX165WR-7 wheeled excavator is powered by the Perkins 1204J diesel engine, providing 102 kW (137 HP) at 2000 RPM. The enhanced fuel efficiency of the engine 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 machine.
There are four power modes now available on the DX165WR-7, which help to simplify the operation of the new excavator compared to the more complex choice of eight power modes and SPC combinations in the previous generation machine. The operator is able to set the power mode (P+, P, S or E) in both one-way and two-way working modes.
When driving the wheeled excavator, the operator can select two-pump travel mode via a touch control on the main panel. This reduces revs by about 300 RPM when engaged, resulting in up to 10% less fuel consumption when travelling. The acceleration function has also been improved, so the operator feels a faster response when pressing down on the acceleration pedal. When two pump travel is disengaged, it provides higher torque for driving uphill, but generally as long as the slope is not too extreme, the use of two pump travel is recommended.
DoosanCONNECT Telematics System
The new DX165WR-7 model is 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.