Klemm KR 709 usually refers to KLEMM’s vertical drilling-rig platform, with the current official product information centred on the KR 709-3G. It is intended for specialist foundation work including in-situ concrete piles, H-beam predrilling and high-pressure injection. Buyers and project teams should treat it as a configurable drilling system: mast, rotary head, clamps and optional equipment determine what the machine can actually do on site.
Klemm KR 709 model explained
The current KR 709-3G identity
The current manufacturer page names the machine KR 709-3G and presents it as a vertical rig with particular strength in auger piling. Searches for Klemm KR 709 may also lead to older machines, brochures or listings without the -3G suffix. That distinction matters because controls, emissions equipment, guarding and drilling assemblies can differ between generations and individual builds.
For a purchase, hire or method statement, record the complete model designation, serial number and installed equipment. A Klemm KR 709 label on its own is not enough to establish working weight or capability. The correct reference is the documentation supplied for that machine, supported by an inspection of the mast, rotary head, hydraulic circuits and safety systems actually fitted.
Intended foundation applications
KLEMM describes the KR 709-3G for SFA and CFA work, meaning segmented flight auger and continuous flight auger drilling. It also identifies predrilling for H-beams and high-pressure injection among the intended tasks. In practical terms, Klemm KR 709 selection should begin with the designed pile or treatment method rather than a desired production figure.
Continuous flight auger work combines drilling and concreting through the hollow stem as the auger is withdrawn, while segmented augers support work where the assembly is built in sections. Each process changes the required mast arrangement, spoil handling, concrete supply and monitoring. The Klemm KR 709 must therefore be reviewed alongside the complete site system, including pump capacity, delivery route and controls for the open bore or fresh pile.
Published technical characteristics
Power and hydraulic system
The official detailed page specifies a 175 kW Stage V engine for the current KR 709-3G. It lists two main load-sensing hydraulic circuits at 240 litres per minute each and a maximum operating pressure of 350 bar. These figures help identify the platform, but Klemm KR 709 performance still depends on the selected rotary head, mast and drilling resistance.
The manufacturer lists rotary heads up to approximately 54 kNm among the possible task-dependent equipment and describes mast torque transfer up to 53 kNm. These are configuration statements, not a promise that every used Klemm KR 709 has that equipment. A supplier should provide a build sheet showing the head type, torque characteristics and the hydraulic demand of auxiliary components.
Dimensions, mass and mast options
The detailed product page gives a total width of 2,600 mm for the fixed undercarriage and lists a 19.5-tonne drilling-rig weight. The manufacturer’s main range listing shows 18.2 tonnes, however, which may reflect a different configuration or reporting basis. Because these official figures differ, transport and platform design for a Klemm KR 709 should use confirmed machine-specific weights rather than either summary figure. Readers comparing the KR 709 with neighbouring models can find the wider Klemm rig range summarised separately.
The current page lists several mast arrangements, including a CFA mast and a high-pressure injection option. It also states that a removable upper mast can support work beneath a minimum room height of 7.6 m in the relevant arrangement. A Klemm KR 709 user should verify this against the exact assembly, since tooling projection, guard position and erection sequence can require more space than a headline mast figure suggests.
| Published item | Current KR 709-3G information to verify |
|---|---|
| Rated engine output | 175 kW |
| Main hydraulic circuits | Two load-sensing circuits, each listed at 240 l/min |
| Maximum hydraulic pressure | 350 bar for drilling functions |
| Undercarriage width | 2,600 mm |
| Application examples | CFA, SFA, predrilling and high-pressure injection |
| Configuration warning | Published weights vary between official pages; confirm the exact build |
Site planning and operating considerations
Access, assembly and working platform
Transport width is only one part of access planning. Delivery vehicles need a suitable unloading area, and the rig needs room to track, erect the mast and receive tooling without conflicting with structures or services. A Klemm KR 709 logistics review should show the complete route and each assembly step, including crane duties where components arrive separately.
The working platform must support changing loads as the mast moves and drilling progresses. Ground pressure on a level surface does not describe every operational condition, particularly near excavations or on gradients. Before a Klemm KR 709 mobilises, the project should define platform design, inspection, drainage and the response to damage or deterioration.
Controls, guards and the drilling zone
The current machine information describes radio remote control for drilling, tramming and set-up functions, together with guards and operating modes designed around EN 16228. These features support safer operation but do not replace an exclusion zone or a competent crew. With a Klemm KR 709, the method statement should address rotating augers, spoil discharge, pressurised hydraulics, concrete lines and access for cleaning or tool changes.
Remote control can help the operator choose a useful viewpoint, but positioning remains critical. The operator must be able to see the mast and communicate with assistants while staying clear of moving components and suspended loads. Safe Klemm KR 709 operation depends on agreed approach rules and isolation before anyone enters the guarded or hazardous area.
Deciding whether it suits the project
Strengths of the platform
The machine’s value lies in combining a stable vertical platform with several mast and drilling-system choices. Its official specification places it in a capable class for auger piling and related foundation work, while optional clamps, winches and injection assemblies broaden the possible configurations. A correctly equipped Klemm KR 709 can therefore cover more than one task within a specialist contractor’s programme.
Modularity also demands discipline. Extra equipment adds weight, transport complexity and maintenance requirements, and a versatile build may not be the most efficient answer for a single repetitive operation. The business case for a Klemm KR 709 should include utilisation, set-up time, tooling inventory, service support and the operator competence required for the chosen applications.
Questions for a supplier or hire company
Ask for the serial-number-specific specification, declaration and operating manual. Confirm the mast and rotary head designations, working and transport weights, guard package, remote control, optional jacks and any telematics fitted. For a used Klemm KR 709, obtain its modification and service history rather than assuming it remains in the original factory configuration.
Then compare the offered build with the bore schedule and site constraints. Check pile diameter, drilling depth, extraction demand, spoil handling, concrete delivery and headroom, together with parts and technical support in the UK. These checks reveal whether the Klemm KR 709 is a sound match or merely a machine that can be made to work with costly compromises.
Conclusion
The current KR 709-3G is a vertical specialist-foundation rig aimed particularly at auger piling, predrilling and injection work. A Klemm KR 709 should be selected through its full configuration, supported by current manufacturer documents and machine-specific weights. When the mast, head, access plan and working platform align with the design, the platform offers a capable and adaptable basis for demanding foundation operations across carefully planned sites.
