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Geothermal drilling rig

Drilling rig KR 708-3GW

The compact drilling rig for shallow geothermal work. Cased heat-loop bores in overburden soil, up to 300 m per individual probe length. Primed for the use of a downhole hammer.

Heat-loop bores for shallow geothermal energy

Energy-efficient work
As with almost all KLEMM drilling rigs, the Energy Efficiency Package (EEP) is also included as standard with the KR 708-3GW machine. The drilling rig adapts automatically to the respective situation where it is used and utilises its potential power to a maximum. This significantly reduces fuel consumption and noise emissions.

Safe operation
The radio remote control of the drilling rig for all drilling, tramming and set-up functions is in accordance with EN 16228, making ergonomic operation and the best view of the drilling point possible. The drilling rig complies with EN 16228, and the "SPM" mode (Special Protective Mode) is available for working without a guard under special circumstances, and the "ROM" mode (Restricted Operation Mode) for manually changing the drill rods.

Increased performance
The latest design stage allows -among others- a usable length of 4 metres (@ 100 kN retraction force) for double rods and the attachment of a loading crane above the right-hand crawler.


Powerful hydraulics
The hydraulics system rests on a load-sensing double pump and a volume flow control independent of the load. For this new development, the operating pressure for drilling functions was increased to 350 bar.

With the oscillating tracks installed as standard and the flexible kinematics, the drilling rig can also be used on uneven surfaces.

High drilling power
In combination with the motor-side power rating of 129 kW, the pump output for faster drilling progress has been increased as compared with previous models.


Optimised for geothermal drilling

The design of the drilling rig is optimal for vertical or almost vertical heat-loop bores.


The drilling rig allows for several layouts of the double-head drilling system.

Additional usage

Variably installable component carriers as preparation, e.g. for a downhole hammer operation.


The optional KLEMM DataLink AIR module for the transfer of machine, process and service data into the cloud.

Can be adjusted to the task at hand

  • Double-head drilling systems adjustable in their performance parameters and preventers
  • Plastic or rubber-coated grouser plates
  • Hydraulically powered water pump
  • DTH-lubricator
  • Multi-channel high-performance flushing equipment
  • Three-part, clamping and breaking device for double-head drilling systems, diameter 152 / 89 mm
  • Loading crane can be attached

Details and options

Crane attachment

Radio-controlled loading crane Palfinger PK 7.501 SLD5 mounted on a console supported on the right-hand crawler chassis.

Details and options

Component carrier

If a loading crane is installed, the component carrier is positioned on the left-hand side of the rig.

Details and options


A interlocking guard meeting the requirements of EN 16228 is available for the drilling rig.

Details and options

Machine control

The entire machine control is easily accessible. The readability is supported by an LCD colour display, intended for inputs.

Details and options

Radio remote control

The drilling rig can be operated from a safe distance using radio remote control for all drilling, tramming and set-up functions.

Details and options

Engine compartment

The diesel-hydraulic drive train with the powerful CAT C 4.4 engine is easily accessible.

Details and options

EEP technology

From the patented Power Sharing System results a smart performance control of the drive train which reduces fuel consumption as well as exhaust gas and sound emissions.

Details and options

Geothermal double-head drilling system

The double-head drilling system has an integrated preventer for controlled drainage of the flushing backflow and the cuttings. KH 25G with extra large inside passage for the preventer unit.

Details and options

Clamping and breaking device

Using the three-part arrangement, securing of the casing, fixation of the standing preventer and the threading in and out of the drill rods and casings are possible.

KLEMM benefits


Clear training sessions for your team. Custom-made training sessions at the KLEMM factory or in-house for your team.

On-site service

Maintenance and servicing, expert inspections and repairs by experienced staff on site.

Spare parts

Speedy processing, even in emergencies outside of normal working hours, readily available storage technology.

Complete solution

Drilling equipment and individual solutions perfectly suited to the drilling task and drilling rig, all from one source.

Technical data

Engine type

CAT C 4.4


Certified according to

EU Stage V / USA EPA TIER 4f


Rated power output

129 kW


DEF tank capacity

19 l


Fuel tank capacity

330 l


Sound power level LWAd

106 dB(A)


Full body vibration A(8)eff

< 0.5 m/s2


Hand-arm vibration A(8)eff

< 2.5 m/s2


1st circuit

150 l/min (load-sensing)


2nd circuit

150 l/min (load-sensing)


3rd circuit

25 l/min


4th circuit

20 l/min


5th circuit

40 l/min


Operating pressure max.

350 bar


Hydraulic oil tank capacity

550 l


Chassis type

Oscillating tracks


Total width

2,200 mm


Tractive force max.

100 kN


Crawler speed

1.6 km/h


Chain width

400 mm (3-rib)


Ground clearance

295 mm



20 deg


Ground pressure*

80 kN/m2


Drilling rig weight

15.1 t


*) Ground pressure of the machine with even weight distribution, taking the total weight into account


Type 202/10

Type 202/13


Frame length

7,700 mm

6,000 mm


Retraction force

100 / 50 kN

130 / 65 kN


Feed rate

5 / 9 m/min

4 / 8 m/min


Retraction rate

5 / 9 m/min

4 / 8 m/min


Fast feed rate

30 / 60 m/min

25 / 50 m/min


Fast retraction rate

30 / 60 m/min

25 / 50 m/min


Rotary head (Casing)

Rotary head (Drill rod)


KH 25G

KH 5



Sensitive environment

The drilling rig is suitable for drilling tasks in sensitive environments.


Sensitive environment

The drilling rig is suitable for drilling tasks in sensitive environments.

Range of application

  • Drilling depths up to 300 m
  • Casing depths up to 100 m
  • Drilling system 152 / 89 m

(depending on ground conditions and mast specification)

Do you need support?

Martin Bonzel

Regional Sales

Region: North America

+49 2761 705-138

+49 151 15124270


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