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Hard-bearing Horizontal Balancing Machine UHK0 pages
Hofmann.
Intelligent Balancing Solutions
Balancing of general rotors
Horizontal Hard-Bearing Balancing Machine UHK 16-26
Balancing a crankshaft on a UHK 19.1
Application
• Balancing of any kind of medium up
to large rotors
• with own bearing journals
• on an auxiliary shaft
• as complete assembly in an
adapter frame
• Applicable in
• manufacturing (single or
series)
• maintenance
• Balancing of rotors like
• electro armatures
• generators
• ventilators
• turborotors
• rolls
• crankshafts
Description
The Hofmann balancing machines
UHK 16 to UHK 26 are being used
for balancing of any kind of rotors in
the weight range up to 150 kg or
12,5000 kg.
The hard-bearing machines are per-
manently calibrated. For a new rotor
type the unbalance measuring system
has to simply be set to the specific
locations of the unbalance correction
planes and the correction radii, only.
Then the balancing process may in-
stantly start. Time consuming calibrati-
on runs are being omitted.
The pedestals comprising the
Hofmann force measuring principle
provide a high stiffness. The integrated
piezo-electric force sensors are mea-
suring the centrifugal force generated
by the rotor unbalance on a direct way
and with a very high sensitivity. As a
benefit those sensors are not sensitive
to temperature fluctuations and exter-
nal electro-magnetic fields. As a result
unbalances may be measured already
at low speeds with a very high precise-
ness.
Advantages
• Efficient balancing due to
• fast changeover
• permanent machine
calibration
• electronic protractor
„Posiquick C"
• high availability
• Perfectly balanced workpieces
through Hofmann force meas-
uring principle
• Universal application
• Useful extensions based on a
modular design
To speed up the rotors to measuring
speed, belt drives are being widely
used. Their application is very flexible
and their influence on the meas-uring
result is small. End drives will be used
to fast and safely accelerate
rotors having a large moment of inertia.
The unbalance measuring system
MC 10 H provides a digital processing
of the measuring data with a high
selectivity for precision unbalance
measurement. The Windows ® opera-
ting system guarantees an intuitive,
simple and reliable operation. The
unbalance correction is being
displayed in terms of mass-,
unbalance- or correction-units.
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