Develon, formerly Doosan Construction Equipment, has launched the new DX140LC-7K 14.6 tonne crawler excavator, replacing the company’s successful DX140LC-7 model. The new machine incorporates many improvements over its forerunner that enhance safety and convenience both for the operator and for working on site, together with a better operator experience.
The upgraded serviceability of the DX140LC-7K includes better access to the DEF tank and the fuel refilling hose. This is combined with a much easier approach for the operator to the engine compartment via new anti-slip steps and handrails positioned behind the cab. The anti-slip steps are protected and secured by a new door on the side of the excavator.
The DX140LC-7K also has a new flattened engine cover design that has reduced the maximum height of cover components on the back of the machine from 1285.5 mm and 1320 mm down to a uniform 1070 mm across all of the back of the machine. This now offers much better visibility for the operator both to the rear and to the right hand side of the machine.
Inside the engine compartment
Inside the engine compartment, changes have been made which have facilitated the new lower engine cover, including the repositioning of the PTO (Power take-off) for the rotation pump from the main pump to the engine itself. This has also allowed the size of the aftertreatment system to be optimized and for it to be lowered.
Elsewhere on the DX140LC-7K, Develon has removed holding valves from the main valve for better fluidity. These holding valves on the main valve are not needed in the EU, as they are standard on the boom and arm. This reduces pressure losses and creates less heat in the system. The air prefilter has also been moved for better performance and noise reduction.
Changes within the cab
Inside the operator’s cab, there is a new dashboard monitor with a state-of-the-art tablet design. The former hydraulic two-way pedal has also been replaced by an electronic two-way pedal, with a new PE3C electric pedal as a standard feature, together with a simplified hydraulic system.
The state-of-the-art cab on the DX140LC-7K continues to excel in terms of spaciousness and ergonomics, taking operator comfort and ease of operation to new levels. As well as the new monitor, the operator has a high quality seat and more features as standard than other machines on the market, ensuring super controllability and high precision in all applications.
Other key features in and around the cab include DAB audio (Hands-free calling system and Bluetooth), keyless start (Develon Smart Key) & remote door lock/unlock, fully adjustable air suspension seat with heating (with optional cooling function) and Around View Monitor with 360° cameras (option)
The new excavator utilises a smart hydraulic system that offers an improvement of around 30% in attachment work, compared to previous excavator models. This 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.
