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5) Simplified Diagnose of the Management Trend and Abrasion of the Bearing
The simplified diagnose of the steel dust concentration in the grease would provide
abrasion status of the bearing, the criterion can be made with a single measurement
data, also important for the management trend by conducting periodical
measurement.
Generally, the steel dust concentration in the grease of the bearing is a low
development, but with the progress of abrasion the steel dust concentration shows a
conspicuous increase.
The management trend is possible by obtaining the increase trend of steel dust
concentration in the early stage of abrasion, by conducting an appropriate lubrication
countermeasure at the early stage of abrasion, for the life extension of the bearing.
The graph below shows the management trend of the steel dust concentration at the
stage of insufficient lubrication of the bearing used in an agitator.
Grease lubrication volume increased
Abnormal value level
Precaution value level
Unit: %Wt
Time course (month)
St
ee
l dus
t co
nc
en
tr
at
ion
in t
he greas
e
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Summary of Contents for SDM-72
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