Page 269 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

Gear and Coupling Best Practices Be st Practice 4.5

Fig 4.5.11 Vibration severity chart (Courtesy of Dresser-Rand and C.J. Jackson, P.E.)

Figure 4.5.14 presents an example of a radio tuner as an
analogy to a filtered vibration signal. By observing the pre-
dominant filtered frequencies in any overall (unfiltered) vibra-
tion signal, valuable information can be gained to add in the
troubleshooting procedure and thus define the root cause of the
problem.

Fig 4.5.12 Shaft vibration and displacement

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