Ground screws

Our product range

The E-series ground screws can be optionally equipped with an excentre set depending on the application. The excentre set allows you to make precise adjustments and ensures a perfect, vertical positioning of the object that you want to install. The system is particularly suitable for the resonance and vibration dampening installation of poles and masts for example.

The F-series ground screws are equipped with round or square flanges. The fixation of the bearing object made possible by this ensures the highest possible stability and safety, even with large or extreme structural loads.

The G-series ground screws are equipped with either one, three or four threaded screws. They are ideally suited for the quick, vertical and permanent installation of masts and fence posts, for example. Optionally, the fence posts, for example, can also be quickly and permanently fixed into place with the special granulate.

The M-series ground screws have a centred M-thread which allows the object that is to be carried to be directly screwed onto the ground screw. They are particularly suitable for constructing prefabricated garages and containers, for example.

The U-series ground screws have been specially designed for all regularly-dimensioned timber beams. They are perfect for the simple and fast mounting of horizontal and vertical timber beams, for example during carport and wooden terrace construction.

The X-series ground screws were developed for special applications. This product can be used to produce made-to-measure foundations. The screws are tailor-made individually according to construction requirements.

Eco-friendly, efficient and safe

The advantages of Krinner ground screws

Eco-friendly

Eco-friendly

Our ground screws don’t harm the environment during installation or after use. No soil needs to be moved for the installation and the foundations can be removed without leaving behind any residue.

Efficient

Efficient

The installation process is significantly faster than that of traditional foundation solutions. Individual foundations can be created in just a few minutes and house foundations take just a day to be put in place.

Safe

Safe

Based on the thousand-year-old pile foundation principle, ground screws offer a safe and secure foundation solution. They can carry the same load as some conventional concrete foundations.

Insights

We are KRINNER

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KNOW-HOW AND NEWS

The KRINNER blog

Tips from the professionals

Which machines can be used to drive in ground screws?

Tips from the professionals

Which machines can be used to drive in ground screws?

Ground screws are an innovative and sustainable alternative to classic concrete foundations. The foundation construction process differs between the two variants, particularly when it comes to the installation. Special ground screw drivers, which are available in a variety of types and designs, are needed to install our ground screws. We’ll tell you a bit about the different tool categories below.

Entry-level manual ground screw drivers

The original aid for manual installation is the screw driving tool or rod. They can be used to drive ground screws into the soil by hand without electric or hydraulic help. However, these tools are recommended for the installation of very small ground screw foundations in garden and hobby construction projects, such as when building a small sunshade holder, for example.  

The electric manual ground screw driver should be thought of as an entry-level model for professional construction projects. It’s a comfortable option for installing ground screws at an affordable price. An electric manual ground screw driver consists of a drive unit, a handle and a telescopic rod for discharging the torque.

You can work effectively with this machine as it can be operated by one person and it makes it possible to easily install professional foundations, even on narrow and difficult to access construction sites. The device is relatively easy and light to transport and it even fits in the trunk of a car.

Manual ground screw drivers enable torques of up to 3,500 Nm and, depending on the soil composition, can be used to drive in ground screws with a diameter of up to 140 mm and a pipe length of 1600 mm. Despite the electrical drive, some manual force is still required. With the KRE 17 and the KRE 20, KRINNER Schraubfundamente GmbH offers two different variations of this type of machine.

Add-ons for caterpillars

For firms that already have a caterpillar in their fleet, optimal machine utilisation can be achieved with hydraulic add-ons that can be used for driving in ground screws. This can either be a free pendulum or a so-called drill attachment. The free pendulum can be acquired for a fairly low price, it can be used to drive in long ground screws and can cope with torques of up to 20,000 Nm.

The pendulum also offers further advantages thanks to the carriage on the hydraulic driver which automatically orients in the correct direction and supports a perpendicular driving in. In addition, you can use the same unit to carry out any pre-drilling work. Free pendulums are particularly suitable for use with very hard ground, or even grounds with a rocky substrate or on building sites on sloping ground which can only be reached with the aid of an excavator arm. With the KRB 250, KRINNER now has one variant in the range.

In principle, the drilling attachment offers the same advantages as the free pendulum but it is slightly more precise. The drilling attachment guide ensures a very precise and perpendicular driving with low installation tolerances. In addition, the feed force can be exactly controlled and any pre-drilling can be done precisely. With the KRL, KRINNER can offer customers this type of machine with a torque of 15,000 Nm.

Self-driving ground screw drivers

Drilling attachment-guided ground screw drivers are also available in the form of self-driving caterpillars. Not only are they useful in terms of installation thanks to their attachment-precision, but also due to their manoeuvrability and light weight. Because of this, they can easily reach narrow construction sites that larger caterpillars cannot without significantly damaging the ground.

Here the relatively low weight of just one ton means that they can be easily transported with a standard trailer. The KRINNER KRD 30 is clear example of this type of machine. It has a torque of 8,000 Nm and can be driven over surfaces with a gradient of up to 15°.   

KRINNER as a leading provider

While the machines are all very different, there are some features that they all have in common. On the one hand, there is a wide range of accessories for screw-in tools and screw drivers which are needed for the various different ground screw series, and on the other hand the machines sometimes need different levels of experience and skill to be operated. As when it comes to the correct installation of ground screws, not only do you need the right machine but you also need the right installation expertise.

Another common feature: you can acquire all these machines from KRINNER Schraubfundamente GmbH. KRINNER is a leading provider of ground screws and is one of the only ground screw manufacturers on the market that also manufactures their own ground screw drivers.     

Areas of application

A stable foundation for all types of buildings

Grounds screws are a real all-rounder for surface and deep foundations and they are often an economic solution for various structural issues. You can use them for a variety of different applications, like for sustainable construction projects or in road and traffic engineering.

Best practice

Our reference cases

Specialist retailers and installers

Find an expert near you!

Do you have a project that our ground screws would be ideal for? Here you can find a list of specialist retailers and installers that can help you with the realisation of your project.

Stay up-to-date

Do you want to read the latest news?

Stay up-to-date

Do you want to read the latest news?

Do you want to know what's going on in the world of ground screws? With our blog posts, we regularly inform you about new projects, products and all other news about KRINNER and the world of ground screws.

Careers

Challenging tasks and considerable scope for action

Careers

Challenging tasks and considerable scope for action

We are looking for dedicated and motivated people who will help us to drive forward our company in an exciting and innovative industry. We place great value on personal initiative, responsibility and personal development. You can expect a welcoming working environment that offers all the amenities of a modern employer. This includes flexible working hours, options for continuous further development and exciting career opportunities. Interested?

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