BA 9137 en 12/2015
10.9
Vibration measurements
DANGER
Danger to life from rotating and/or moving parts
Risk of being gripped or drawn in by rotating and/or moving parts.
If a mobile vibration measurement is taken on a gear unit while it is in operation, it is imperative to ensure
that the measurement is not taken directly near rotating parts in order to avoid accidental contact with
the rotating parts.
3H
3V
4H
5H
3H
4V
4H
5V
Fig. 10:
Measuring points
V
Vertical measuring point
H
Horizontal measuring point
(Measuring points 1 and 2 are located at the bearing points on the motor.)
The measuring points shown in Figure 10 are the standard measuring points in a mobile measurement.
All gear units of this type in the field can be measured on these measuring points. This enables direct
comparison with other gear units of the same type and same size. A detailed illustration of the gear unit is
contained the drawings in the gear unit documentation.
Vibration measurements and their evaluation should be conducted by Siemens personnel and/or in close
collaboration with Siemens personnel. This way, experience gained from measurements conducted on
comparable bevel-gear planetary gear units can be incorporated into the measurement and the evaluation
of its results.
When measuring vibration, the following should be observed in general:
a) Measure only at the measuring points indicated in Figure 10 above.
b) Do not measure on resonance cavities (e. g. fins, inspection covers, pipes, etc.).
c) The motor output should also be recorded at the time of measurement, as output fluctuations may result
in different measurements.
