The proven KR 805-3G universal drill rig is now also available with an extra long drill mast. This version was specially developed by KLEMM Bohrtechnik for drilling applications such as soil nails, augers or casings for drill depths of up to 6 m using the single-pass method.
With the optional swivel magazine type MAG 1.3, the drill depth can even be extended by a further 6 m without the need for manual reloading. The drill string magazine can also be adjusted to drill tools with a usable length of 3 m by means of flexible positioning of the upper grab system. The magazine can thus hold drill tools up to a diameter of 152 mm and 6 m or 3 m in length.
The rotary drives and hydraulic hammers are exactly matched to the drill rig. A KH 25 rotary drive with benchmark data of 25 kNm torque and 103 rpm or a KD 1011 hammer drill with 11 kNm torque and 180 rpm benchmark data can be installed. The drives are operated with a system pressure of 310 bar.
The kinematics enable the mast to reach drill points perpendicular to the crawlers at angles between 0° and 90°. The mast can also be positioned to drill vertically beside the tracks.
With the drill mast, it is possible to reach drill points up to a height of approx. 4500 mm – which is a great advantage when it comes to slope stabilization work.
The 129 kW Volvo Penta diesel engine complies with the latest emission regulations in Europe, the EEC 97/68 EC Stage 4, and in the USA, the EPA/CARB TIER 4 final.
The hydraulic system works with two load-sensing main pumps, each with a displacement of 190 l / min and a pressure level of 350 bar. In doing so, the optimum power level is automatically adjusted by the Energy Efficient Power System (EEP). Fuel consumption is reduced by up to 25% compared to machines of the same power class without EEP system.
Numerous machine parameters can be set using the modern 5.7″ touchscreen without the need for tools or the removal of hoods. In the event of an error, a detailed diagnosis can be carried out via the display.
The control system works with mobile control blocks with integrated CAN bus technology. The very direct communication with the control block allows significantly reduced reaction times for the valves and thus allows the drill master to operate the machine with extreme sensitivity and precision.
The standard way to operate the KLEMM KR 805-3G is by using a portable wireless remote control. Optionally, a fixed control arm is also available. KLEMM Bohrtechnik is the only manufacturer to offer the possibility of combining both types of control – wireless remote control and control arm.
The latest European standard EN16228 was taken into account in the development of the rig. That means that for work without a separating guard under special conditions a “special protective mode” (SPM) is available and a “restricted operation mode” (ROM) is available for manual drill string changes.
The rig will be officially presented to an international professional audience at BAUMA 2019 in Munich. Following the fair, the rig will make its first appearance at a job-site in the USA.