everything that rotates
                        needs to be balanced


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Vibration Information for rotating machinery applications.


Spectral Vs. Waveform Data

Friday, January 13, 2012

Spectral data is displayed in the frequency domain while waveform data is in the time domain. Spectral information is obtained by applying a Fourier transform to waveform data; this converts the data to show that amplitude and phase of the vibration at different frequencies. Read More

Rolling Element Bearing: Forcing Frequencies

Tuesday, September 06, 2011

Rolling element bearings are used in all sorts of rotating applications. Unfortunately, because of poor machine setup and maintenance, fewer than 10% of bearings reach their intended design life; this is because even marginal increases above the maximum allowable load on a bearing can dramatically shorten its life span. For example, if the load is increased by 20%, the bearing life decreases by almost half. Read More

Rigid Body Modes

Saturday, July 16, 2011

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Gearboxes: Gear Mesh Frequency

Monday, July 11, 2011

Gear mesh frequency, which is also called tooth mesh frequency, is the frequency at which gear teeth mate together in a gearbox. There are three important frequencies involved in gearboxes: input speed, gear mesh frequency, and output speed. Gearboxes will always have a strong vibration component at the gear mesh frequency. Read More


Monday, July 04, 2011

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