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The latest version of the Grundomat pneumatic piercing tool from TT Technologies, Aurora, Illinois,
is now available. The new Grundomat-P version includes several
advancements. Development of a more advanced reciprocating
stepped cone chisel head assembly has increased the tool’s
effectiveness and a new automatic reverse makes it easier
to use.
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The
reciprocating stepped cone chisel head assembly hammers
through obstructions, keeping the Grundomat piercing
tool on track and on target.
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Stepped Cone Chisel Head
Conventional fixed head piercing
tools have a tendency to follow the path of least resistance.
When faced with obstacles or difficult soils, conventional
tools are often knocked of course. The uniquely designed reciprocating
stepped-cone chisel head of the Grundomat powers through obstacles.
The
stepped-cone chisel head assembly employs a two-part process.
First, the piston strikes the chisel head, propelling it forward.
The chisel head creates a pilot bore for the rest of the tool
to follow. Second, the piston strikes the tool casing propelling
the tool forward in to the newly created pilot bore. To reduce
wear and maintenance, Teflon™ seals (not plastic) are
used to ensure no direct metal-to-metal contact between the
piston and internal casing.
The
reciprocating stepped cone chisel head assembly on the new
Grundomat P has been redesigned to allow greater surface area
contact between the piston and the chisel head. This greater
surface area provides even more power to the chisel.
Weight
The overall weight
of the Grundomat-P version has decreased compared to older
models. The overall piston weight, however, has been increased,
giving the Grundomat-P version greater impact power. This
greater impact power gives the tool more power to bore through
tough obstructions faster and more accurately than ever before.
The
combination of greater impact power and the redesigned step
cone chisel head assembly is improved directional stability,
reduced soil friction and higher boring speed, even in the
most challenge soil conditions.
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By
adjusting a lever on the in-line lubricator, the Grundomat can be easily reversed, during the bore.
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Reverse Made Easy
In addition, 5- through 7-inch
diameter Grundomat-P
models are equipped with a new patented reverse mechanism.
The Grundomat-P
is easily reversed, during the bore, by adjusting a lever
on the lubricator control system. Smaller Grundomat models
are reversed by simply turning the air a hose quarter
turn.
Lubricant
for the Grundomat is fed to the tool through an in-line lubricator.
The lubricant, Grundo-Oil, is specially formulated for pneumatic
tools and is both biodegradable and environmentally friendly.
Piercing Tool Applications
The Grundomat is ideal for water,
sewer, landscape and irrigation, gas, electrical and plumbing
contractors. Grundomat piercing tools are easily launched
by hand, or from a starting cradle. The tools can be used
to pull steel or plastic pipe, or drive steel pipe. The tools
are also easily configured for pipe pushing (extraction) applications.
During pipe extraction, a pipe-pushing adapter is placed on
the front of the piercing tool. The tool’s percussive
force is then used to literally drive out an existing service
line.
There
are twelve Grundomat models ranging in diameter from 1 3/4
inches to 7 inches. A full line of accessories, including
aim and launch equipment, as also available. Grundomat tools
and accessories are available in packages or individually.
Because of their simple design, all Grundomat tools are field
repairable.
Utility Products Showcase,
April 2000
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