Maintenance Technology May 2017 - 25

RELIABILITY STRATEGIES

Fig. 3. Pay Attention to Particulates in Lubricants

Gearbox Failures

14

Millions of Cycles
to Failure

12
10
8
6
4
2
0
0

10

20

30

40

50

Particle Size Removed (Microns)
Tiny 3-µm particles cause more damage than 40-µm and 10-µm particles (Reference: A Study by Dr. P. B. McPherson)

Research was performed to determine which particles
caused the greatest damage. It wasn't the 40-µm particles
or the 10-µm particles, it was the tiny 3-µm particles (see
Fig. 3).

According to Tranter, personnel may think that if they
can't see water in oil then the oil must be fine. Sadly, that
is not correct (see Fig. 4). By the time water can be seen
in the oil, the life of the bearing has been halved. "We

REVOLUTIONARY VIBRATION
AND BEARING ANALYSIS

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first class condition monitoring products for more profi table maintenance.
Use SPM HD for accurate rolling element bearing analysis. Reduce data
collection time with tri-axial vibration measurements. Add balancing,
laser alignment, orbit analysis and much more, all in a rugged and lightweight
instrument.
An intrinsically safe version of Leonova Diamond is also available.
For a total Condition Monitoring package, contact us today!

Tel. 1-800-505-5636
leonovabyspm.com
spminstrument.com
MAY 2017

MAINTENANCETECHNOLOGY.COM | 25


http://www.spminstrument.com http://www.leonovabyspm.com http://www.spminstrument.com http://www.MAINTENANCETECHNOLOGY.COM

Table of Contents for the Digital Edition of Maintenance Technology May 2017

Maintenance Technology May 2017 - Cover1
Maintenance Technology May 2017 - Cover2
Maintenance Technology May 2017 - 1
Maintenance Technology May 2017 - 2
Maintenance Technology May 2017 - 3
Maintenance Technology May 2017 - 4
Maintenance Technology May 2017 - 5
Maintenance Technology May 2017 - 6
Maintenance Technology May 2017 - 7
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Maintenance Technology May 2017 - Cover3
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