At bauma 2025, Klemm presented various innovations, from compact drilling rigs to high-performance anchor rigs to energy-efficient geothermal drills.
The KR 717-3GW geothermal drilling rig and the KR 806-4E with electrohydraulic drive attracted a great deal of attention from visitors to the Bauer booth, the parent company of Klemm.
The KR 806-4E drilling rig concept is a further development of Klemm’s field-proven electro-hydraulic drilling rig. It has more engine power at 241 hp, greater battery capacity (160 kWh) and a simplified electrical system.
The rig has the same lifting capacity as its diesel-hydraulic KR 806-4GM counterpart, which means that a MAG 6.1 magazine can be easily attached. The KR 806-4E is quiet, environmentally friendly and is just as powerful as conventional diesel-powered machines. Initial construction site testing has shown that it requires almost three times less energy than the diesel-powered model.
The KR 717-3GW and KR 805-3GW are Klemm’s next generation of geothermal drilling rigs. The KR 805-3GW is used for geothermal loop drilling for near surface geothermal energy extraction.
A loading crane, a rod manipulator and a hydraulic salvage and pulling device are integrated onto the drilling rig. With the Energy-Efficient Power Package (EEP) and the patented power-sharing system, the rig automatically ensures optimal energy efficiency. With an engine output of 335 hp, the new geothermal drilling rig is designed for drilling depths of more than 400 metres. The new drill mast provides a tractive force of 220 kN and facilitates rod lengths of up to 6 metres.
The functionality of the rig is extended through a newly developed 25-cm three-fold clamping and breaking device with sliding and recovery function with 400 mm stroke and 176 kN tensile force.
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It also has a new, patented, lateral sliding double head drilling system with newly designed KH 47 and KH 17 rotary heads. The drilling rig can be equipped with a mud pump that can be lowered hydraulically and there is an optional winch that has a 300 metre cable capacity.
Klemm also showcased its KR 806-4GM, a high-performance drilling rig for overburden drilling which includes an on-board magazine for double-head drilling. Based on the KR 806-3GS, the modified machine kinematics enable the use of a heavy mast with a double rod magazine. With a total machine weight of about 21.9 tonnes, the MAG 6.1 magazine can carry a maximum load of 1,100 kg.
The hydraulic system includes two load-sensing main pumps, each with 240 litres per minute of flow and a pressure level of up to 350 bar. Thanks to the patented power-sharing system, the power output automatically adjusts to the drilling situation, resulting in fuel savings of up to 25 per cent. A touchscreen is available to adjust machine parameters. The standard radio remote control allows safe operation of the drilling rig while having an optimal view of the work area.
With a maximum torque of 47 kNm and a piston weight of 24 kg, the newly developed KD 4724 is the most powerful Klemm hydraulic drifter to date. By changing the stroke of the piston and the pressure in the percussion unit, the impact energy of the hydraulic drifter can be adjusted to suit the job in hand.
