SCHENCK HM 80 Horizontal Balancing Machine 250 Tonnes – Year 1990

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Description

SCHENCK HM 80 Horizontal Balancing Machine – Year 1990
SCHENCK H80 ROLL BALANCER equipped with:

SERIAL: AHM0083
AGE: 1990
UNDER POWER FOR INSPECTION
LOCATED IN PLANT
BUYER RESPONSIBLE FOR REMOVAL

SCHENCK Catalogue Information about Horizontal Balancing Machines
SCHENCK Series HM6/HM60, HM7/HM70, HM8/HM80.
Range of Application
Universal balancing machines series
HM are designed for accurate balan-
cing of a wide spectrum of rotors.
They are suitable for balancing
cylindrical rotors with integral shaft
journals and for balancing disc
shaped rotors on balancing arbors.
Typical rotors are electrical armatures,
rolls and turbines up to 250 tonnes,
ventilators, pump impellers and drive
elements.
Permanent calibration, ergonomic
design and logical operating
sequences facilitate operation.
Their modular design principle and a
wide range of accessories make the
machine highly flexible.
Schenck universal balancing machi-
nes series HM are a highly efficient
investment both for one-off rotors
and small batches.

Sequence of operation
• Manual loading of the rotor on
the bearing pedestals, closing of
counter bearings and coupling
the drive system (belt or univer-
sal joint shaft).
• Closing of protection device and
start of the automatic measuring
sequence:
• Acceleration, determination and
display of unbalance on the
measuring instrument, decelera-
tion. The measured unbalance
values are retained after the
measuring run is completed.
• Opening of the protection device,
manual unbalance correction (if
necessary).
• Verification of residual unbalance
(measuring unit indicates whe-
ther the required tolerance has
been reached) and unloading of
the rotor from the machine.

Special features
• High ease of operation: Hard-
bearing design eliminates the
need for calibration runs.
• Machine provides for unbalance
correction in two planes or sepa-
rate correction of static and
couple unbalance.
• Rotors can be mounted on their
original shaft or balancing arbor
on roller bearings or with oil slee-
ve bearings (available as option)
• Indexing angle display in case of
belt drive.
• Automatic measuring cycle with
selectable, infinitely variable
acceleration, measuring and
deceleration times.
• Upgradable with many supple-
mentary modules, e.g. for mass
correction.

HM bearing pedestals: Slim, robust bearing
pedestals ensure high overall stiffness,
high linearity and extremely low damping.
Use of the Schenck hard-bearing principle,
with the middle section of the bearing
pedestal designed as a sturdy dynamome-
ter. Sensors are arranged outside of the
force path and are therefore insensitive to
impacts.

Underslung Belt Drive (BU) Universal-Joint Drive (U)
Selection of a drive system is determined
by the shape of your rotors. Combinations
of different drive systems on one machine
are possible. Underslung belt drives (BU)
provide for smooth operation and are uni-
versally applicable. Universal joint drives
(U) in cases where high drive power is
required.

Measuring units

Proven measuring technology
This machine series includes measu-
ring technology in the accustomed
Schenck top quality in two levels:
The CAB 920 SmartTouch combines
maximum precision with simplest
operation: the CAB 920 offers an
ingeniously simple operating con-
cept, whose logical relationships are
clearly apparent at the first glance.
The result is totally convincing: rapid
and safe working with the minimum
learning requirement – for every con-
ceivable technical rotor variant.
The CAB 820 is the basic measuring
unit, which sets the standards for its
class. It offers absolute peak perfor-
mance combined with every opera-
ting convenience, all at outstanding
value for money.
The choice of protective enclosure is
determined by the danger the rotor
presents, with due consideration to
the balancing speed, the method of
unbalance correction and the maxi-
mum penetration energy of rotor
components or fragments.
Depending upon the varying protec-
tion requirements, ISO 21940-23
specifies five protection classes (0,
A, B, C, D) for balancing machines.
Series HM balancing machines
usually require Class B or C enclosu-
res. Safety class B should be chosen
if contact with the rotor or parts of
the drive systems may result in inju-
ry. Class C is to be used in cases
where the hazard of fragments deta-
ching from the rotor cannot be ruled
out entirely. The size, shape, hard-
ness and tangential speed of a pro-
jected fragment are used to calcu-
late the pene tration potential.
This measuring unit is always the
right solution when you want to
achieve the balancing objective in
your business quickly and without
major effort.
Measuring units
Measuring unit CAB 920 Measuring unit CAB 820

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