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RELIABILITY REDEFINED

STRIKINGLY SMART

For more than five decades, the GRUNDOMAT soil displacement hammers stand for on-target underground pipe installation. Our “moles” owe their special longevity and high accuracy to the intelligent construction, uncompromising quality and consistent further development based on the requirements of the users and the trends in pipeline construction. To enable you to solve your tasks faster and easier, we have now made the complex technology even more durable, more reliable and simpler to use. That‘s what we call “simple & easy”.
 

Discover the new Generation Grundomat

OPTIMISED CONSTRUCTION

The new generation of GRUNDOMAT soil displacement hammers corresponds exactly to this principle. The optimised construction combines all the benefits of previous series with new technical solutions. Proven concepts have been kept – such as the two-stroke principle and the crowned head for maximum on-target precision and high percussive impact. Improvable features have been optimised. A new solution, for instance, is the non-detachable front machine part for improved durability and reduced service effort. The soil displacement hammer‘s versatility of use has also been preserved, while new options such as the servo control for small machine versions ease handling. For you as a user this means maximum productivity and profitability in pipe installation.

OPTIMISED

FOR HEAVY-DUTY WORK

The construction of the new GRUNDOMAT generation is the result of a thorough development process focussing on the reliability of the technology. Well thought-out down to the last detail, it impresses with unique features that guarantee maximum power and on-target impact in various conditions. The clever and durable construction also considerably reduces the service and repair effort.
  • TWO-PART, NITRIDED AND PHOSPHATED PISTON

    The piston possesses high creep resistance even when exposed to maximum strain. Optimum energy transmission ensures high penetration force and powerful thrust.
  • REPLACEABLE SLIP BELTS AND SEALING RINGS

    protect valuable machine components from wear and tear and ensure optimum and safe running behaviour of the piston with maximum power. Replacement is fast and inexpensive.
  • WEAR SLEEVE FOR THE CHISEL BEARING

    protects the front housing from wear and tear and substantially increases the chisel‘s service life. The wear sleeve can be easily replaced when worn.
  • FORCE- AND FORM-FIT FIXATION OF THE HEAD

    Optimum power transfer for maximum penetration force. The simple elastic fastener is heavy-duty and easy to detach even when extremely worn.
  • CLOSED HEAD SEAL

    prevents dirt from entering and ensures that the two-stroke cycle works reliably.
  • 01. The crowned head with two-stroke cycle displaces the soil in three steps with maximum accuracy and high running stability.
  • 02. The concentration of impact energy in thrust direction onto the sharp cutting edges guarantees a high penetration force.
  • 03. No front machine seal – enormous longevity and optimal energy transfer. All disassembly and service works are easily carried out via the rear opening.
  • 04. The wear parts (crown and cone) of the two-part bore head can be exchanged separately in order to reduce the repair effort.
  • 05. The inner and outer chrome-plated housing, which is honed on the inside, is low-wear and low-maintenance, highly durable and ensures sustained maximum performance.
  • 06. The smooth outer housing has an easy-to-read wear indicator.
  • 07. Various mounting options for a variety of applications beyond the standard, e.g. pile foundations or driving out steel pipes.
SHREWD HEADS
The two-stroke principle helps to overcome peak resistance and surface friction so the highest possible directional stability is achieved. This way the GRUNDOMAT soil displacement hammer achieves its almost legendary precision, also in difficult soils.

STROKE ONE

During the first stroke, the piston strikes the cutter so that the head cuts the borehole and crushes and removes any obstacles. The impact energy of the piston is concentrated on the cutter and the bore head.

STROKE TWO

In the second stroke, the bore head moves freely in the borehole and the full impact energy of the piston is transferred to the housing. The entire machine follows up, with a pipe attached as the case may be.

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TECHNICAL SPECIFICATIONS





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