Develon is now offering the DX140RDM-7 demolition excavator. As with the firm’s three larger models from 31-61 tonne, the new DX140RDM-7 22.5tonne demolition excavator offers different configurations for the customer with a range of solutions to suit a range of projects. There is also a multi-purpose version that can be used for other applications on site as well as demolition.
One option for the DX140RDM-7 is a Monolithic variant that features a demolition arm and without any interchangeability. As with the larger machines, the DX140RDM-7 is available in a dual format utilising a modular boom design and hydraulic lock mechanism, allowing the user to change between different arms for demolition and digging using the same machine.
For the fixed Monolithic version of the new DX140RDM-7, the working range allows the machine to work with a demolition attachment to a maximum height of 16m. The recommended maximum tool weight in this mode is 1.45tonnes. In common with the other models in the demolition excavator range, the DX140RDM-7 offers high visibility and a tiltable cab, particularly suited to high reach demolition applications and providing a 30° tilting angle.
In the dual purpose version of the DX140RDM-7, the pin height and maximum tool weight are 14m and 1.45tonnes, respectively (with a 2m extension as an option). All the components such as the undercarriage, the tilting cab and the shoes remain the same as in the fixed version, only the modular boom design and hydraulic lock mechanism are different, allowing the user to swap between demolition and digging arms.
The design makes it a simple process to change between demolition boom and earthmoving boom for different types of work on the same project. A special stand is provided for the boom changing operation, which is based on quick-change hydraulic and mechanical coupler connections. A cylinder-based system pushes the locking pins into place to complete the procedure.
The multi-boom design allows the earthmoving boom to be mounted in two different ways for further versatility with three different configurations for the dual purpose base machine.
The DX140RDM-7 has a hydraulically adjustable undercarriage, which extends to a maximum width of 3.7m to provide optimum stability when working on demolition sites. The width of the undercarriage can be retracted hydraulically to 2.5m in the narrow width position, which is ideal for transporting the machine. The mechanism is based on a permanently lubricated, internal cylinder design which minimises resistance during the movement and helps prevent damage to components.
Standard safety features on the DX140RDM-7 include a FOGS cab guard, safety valves for the boom, intermediate boom and arm cylinders and a stability warning system. Power for the machine comes from a diesel delivering 86kW that meets Stage V/Tier 4 Final emissions requirements.
