Choosing the right installation technology

KRINNER ground screw drivers

We have the right screw-driving technology and know-how for all our KRINNER ground screws. We have a range of screw drivers that we designed and manufactured ourselves to meet the diverse range of possible applications. You can choose from electric manual screw driving tools, hydraulic excavator add-ons and self-driving caterpillars. Each machine fulfils different requirements and has specific advantages. However, all KRINNER machines have one thing in common:  they are very light and simple to operate, but they are extremely powerful.

Manual screw driver

KR E 20 – The powerful step up

Manual screw driver

KR E 20 – The powerful step up

In principle, the KR E 20 covers the same areas of application as the KR E 17, but it is more powerful with more torque.

Performance characteristics:

  • 230 volt
  • Approx. 3,500 Nm torque
  • Compatible with all Krinner screw driving attachments
Hydraulic excavator add-on (drill attachment)

KR L – The perfect combination of precision and strength

Hydraulic excavator add-on (drill attachment)

KR L – The perfect combination of precision and strength

With the KR L, you can install ground screws extremely precisely and exactly with corresponding power thanks to the drill guide. This way all KRINNER ground screws can be installed for all types of application, but in particular the large V-series ground screws.    

Performance characteristics:

  • Approx. 15,000 Nm torque
  • Quick-change device
  • For projects with large foundations (diameters up to 140 mm; wall thickness up to 6.3 mm)
Self-driving caterpillar

KR D 30 – Lightweight but powerful

Self-driving caterpillar

KR D 30 – Lightweight but powerful

Just like the KR L, the KR D 30 provides an outstanding level of precision during installation thanks to its drill guide. In addition, due to its light and manoeuvrable design it can be used in particularly small and difficult to access construction sites. Adaptors for various different drilling tasks (down-the-hole-hammer, core drilling bit or augers) complete the performance profile.   

Performance characteristics:

  • Approx. 8,000 Nm torque
  • 2.4 m drill lift  
  • Only 1.1 t transport weight  
  • Precisely-defined feed force
Hydraulic Excavator Add-on

KRP System - The Power Solution

Hydraulic Excavator Add-on

KRP System - The Power Solution

With the KRP System, we offer you a reasonably priced hydraulic excavator attachment - as usual engeneered by KRINNER. 

For the installation of the KRINNER ground screws you can choose between two options. Depending on the project requirements, you can either get the KRP System with a 15,000 Nm or 25,000 Nm Auger-Torque drive.

Technical Data Type 15000 Max 

  • Max. operating pressure 240 bar 
  • Factor for torque 56 Nm/bar 
  • Net weigt approx. 180 kg 
  • Recommended carrier 8t -15t

 

Technical Data Type 25000 Max 

  • Max. operating pressure 240 bar 
  • Factor for torque 94 Nm/bar 
  • Net weigt approx. 270 kg 
  • Recommended carrier 12t -22t

 

By using the KRP System, it is possible to install preassembled, extended KRINNER ground screws. The preassembly leads to time savings, which in turn increases the speed of installation.

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