 CTRL
Systems, Inc. |
Technical
Bulletin
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No.00-003 |
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Bearings in the base of these
large and heavy tub mixers are prone to failure. The weight
of the mixer and the weight and consistency of the pigments
cause the bearings to fail, shutting down production and
necessitating a clean out problem. The customer had tried
to predict failure using Vibration Analysis and/ or Infra-Red.
Both tools were incapable of solving this problem. The
size, mass and weight of the mixer preclude an accurate
reading on vibration. The size allows the heat signature
to dissipate. |
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Using the long probes we
were able to clearly identify the location and condition
of the three bearings that supported this mixer. We distinctly
ascertained that one had serious problems and one was
close to complete failure. Since this unit was due for
P.M. it was decided to rebuild immediately. When the bearings
were exposed our diagnoses were correct. The one bearing
had indeed failed and was removed in pieces. Vibration
had failed to detect this. |
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| A means to
monitor the operating conditions of these
bearings has been established. Operating
expenses and overtime caused by down time
should be eliminated. The operator on the
floor can quickly check the equipment between
batches. |
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©2000 CTRL Systems, Inc. All rights reserved.
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