Develon’s new DX17Z-7 zero tail swing and DX19-7 conventional mini excavators are said to offer significantly increased performance, versatility, operator comfort and easier maintenance than the previous generation machines.
Both are powered by the Kubota D902 Stage V compliant diesel engine providing a 20% higher gross power output of 12.1kW (16.2hp) at 2400rpm. The engine also offers a 25% larger displacement and a 29% increase in engine torque to 54.6Nm at 1900rpm, translating into high overall reliability and reduced strain on the engine and other components.
Both models feature a 1.75m boom and 1.03m arm as standard, with an optional longer 1.23m arm available for both. The DX17Z-7 has a cast 180kg counterweight as standard with an additional 85kg counterweight for use with the optional longer arm. The tail swing radius in the DX17Z-7 has been reduced by 6.5% to only 645mm compared to the previous model. The tail swing radius increases to 720mm when the additional 85kg counterweight is used.
An integral 65 kg cast counterweight is used in both the standard and longer arm versions of the DX19-7. The front assembly in both is protected by cylinder guards to avoid any kind of potential damage, with a hydraulic hose layout which runs through and is protected by the boom structure. One- and two-way proportional flow is provided as standard with easy access to the selection valve. Flow is easily controlled via a thumbwheel on the right-hand joystick. With quick coupler piping already available on both models, the operator can switch to using a quick coupler by pressing a safety button on the left console – bringing up a warning message on the 5in digital display in the cab to notify the operator, who can then simply push a button on the right-hand joystick to begin quick coupler work.
Both come equipped with retractable 230mm tracks, where the width between the tracks can be automatically reduced from 1290mm to 994mm and both machines have a foldable blade. This allows operators to adapt the width and dimensions to navigate narrow spaces. The adjustable width allows operators to distribute the weight more evenly, reducing ground pressure and providing increased stability while digging or lifting.
The DX17Z-7 is available as a canopy machine, whilst the DX19-7 can be supplied with either a canopy or a cab. Both machines share a common set up for the joystick and switch controls:
Left hand console controls
- Left hand joystick for control of swing and arm movements
- Quick coupler switch
- Engine speed control lever
- Work light switch
Right hand console controls
- Right hand joystick with controls for the horn, breaker switch, the thumbwheel for the one- and two-way hydraulics and the quick coupler switch
- Blade control lever
- Track retraction/extension switch
- Travel alarm switch
- Rotating beacon switch
- 12V socket
LED lights and a rotating beacon are also standard on both models. The DX17Z-7 has an LED lamp as standard on the boom, whilst the DX19-7 has a light on the boom (in both the canopy/cab versions), with another light on the top of the rear section of the cab in the cabbed version.
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