The DX420LC-7 is powered by the new Scania DC13 Stage V compliant diesel engine, providing 257 kW (344.4 HP) of power.
Doosan Infracore says the Scania engine uses super-efficient DOC/DPF+SCR after-treatment technology to offer a new solution to exceed Stage V regulations that does not require exhaust gas recirculation. This is combined with the new generation Smart Power Control Technology (SPC3) to provide 3-10% better fuel efficiency (m3/l) than the previous DX420LC-5 model.
There are now four power modes available, which is intended to simplify the operation of the new DX420LC-7 excavator compared to the more complex choice of eight power modes and SPC combinations in the previous generation machine. The operator can set the power mode (P+, P, S or E) in both one-way and two-way working modes.
Doosan Infracore says that, by bringing together the SPC3 system and a new Doosan Mottrol main control valve, the new DX420LC-7 also offers 2% more productivity than the DX420LC-5 in company tests, ensuring the best digging, swing and tractive forces together with the best lifting performances for this size of machine.
The new cab in the DX420LC-7 model features a touch-enabled colour LCD gauge panel with 30% larger 20.32cm size screen.
A stereo system is integrated in the cab's gauge panel (with Bluetooth streaming function), in addition to a keyless start system, enhanced interior cab design, improved air conditioning/defrost performance, seat heating (2-step), 360o cameras, and LED type cab space lamp
Optional cab features include ultrasonic sonic detection of obstacles, LED lights, side protection or catwalk and air compressor.
As standard, 360° cameras provide full visibility around the excavator and allow the operator to see a top-down view of the area outside the machine. The camera array comprises a front camera, two side cameras and a rear camera. The camera display is separated from the gauge panel.
The DX420LC-5 features new DOC/DPF+SCR technology that is designed to greatly reduce the maintenance of the diesel particulate filter (DPF), with a six times longer automatic regeneration interval (60 hours) and an ash cleaning interval of 6000 hours, compared with the previous DPF in the DX-3 generation machines. The operator is now able to see the amount of ash build up in the DPF from their seat in the cab via the gauge panel and that a regeneration has been successful.
The new DX420LC-7 model is also factory-installed with the DoosanCONNECT wireless fleet monitoring system, which system offers a web-based fleet management solution for monitoring the performance and security of machines and promoting preventative maintenance.
Doosan is offering customers lifetime-free cellular service with all DX-7 generation 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 3-year period.
