RELIABILITY REDEFINED

STRIKINGLY SMART

For more than five decades, GRUNDOMAT soil displacement hammers have stood for on-target underground pipe installation. Their exceptional longevity and high precision stem from the smart design, uncompromising quality and consistent development of our "moles". We never lose track of the requirements of users and the trends in pipeline construction. So that you can tackle your jobs faster and easier, we made the complex technology even more durable, reliable and easy to handle. That's what we call "simple & easy".

Discover the new Generation GRUNDOMAT

Reliability revisited

The new generation of GRUNDOMAT soil displacement hammers corresponds exactly to this principle. The optimised design combines all the benefits of previous series with new technical solutions. The distinctive characteristics of the GRUNDOMAT, such as the movable head for unbeatable power and pinpoint accuracy and the use of the highest quality materials for long construction site operations, make the GRUNDOMAT a reliable partner on your construction sites. The servo control for small machines is new and an intelligent internal design guarantees a long machine life. For the user this means the highest possible productivity and maximum efficiency for pipe installation.

SUSTAINED MAXIMUM PERFORMANCE

The design of the new GRUNDOMAT generation is the result of a careful development process focussing on user-friendliness. Combined with the proven reliability of our technology, we can give the user durable technology for trenchless pipe installation that is customised to their construction sites.

High penetration force and powerful thrust

also with maximum load thanks to specially hardened, corrosion-protected pistons.

Minimum air consumption at highest power

thanks to innovative piston technology and a sophisticated sealing system.

Optimum performance

through regular service with replacement of inexpensive slip belts and sealing rings.

Extremely long service life of chisel

with use of bearing bush.

Reliable and on-target thrust in two-stroke cycle

thanks to movable head with unique seal.

EASY SHIFTING

Servo or thrust control

SERVO CONTROL

Our servo control simplifies shifting between forward and reverse gear with a simple flip of the lever (1-gear). The integrated oil-fog lubricator supplies the machine with GRUNDOOIL and at the same time guarantees maximum power and penetration force.

THRUST CONTROL

Our GRUNDOMAT with the proven thrust control is switched from forward to reverse gear by simply turning the compressed air hose. The soil displacement hammer is supplied with oil by the oil-fog lubricator.

01 Crowned or stepped head with two-stroke method for maximal target precision and high running stability.
02 Concentration of impact energy in thrust direction onto the sharp cutting edges for high penetration force.
03 No front machine seal – enormous longevity and optimal energy transfer.
04 Low-wear and low-maintenance housing – chrome-plated inside and outside, also honed inside for high durability, ensure a sustained maximum performance.
05 Easy-to-read wear indicator on the smooth outer housing.
06 Various mounting options for a variety of applications beyond the standard, e.g. immediate piping, pile foundations or driving out steel pipes.

ALL IN THE HEAD

Crowned or stepped head

For optimum adaptation to various soil conditions, the GRUNDOMAT soil displacement hammers can be equipped with movable crowned or stepped heads. Both versions operate with equal precision, stability and efficiency, each in their own way.

Our users appreciate the crowned head especially in loose, stony and densely packed soils, thanks to its aggressiveness and enormous penetration force in hard ground conditions. Experienced drilling professionals are of the opinion: "This head lets nothing hold it back in achieving its goal".

The stepped head, which has been tried and tested for decades, is universally applicable in all displaceable soils and is the "classic" among the soil displacement hammers.

The intelligent 2-stroke principle brings the impact energy to where it is needed. To overcome surface friction or peak resistance. This way the GRUNDOMAT soil displacement hammer achieves its almost legendary precision, even in difficult soils.

Stroke one

During the first stroke, the piston acts on 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 drill 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.