Bearing Frequency Calculator

[flacrkr]

I am looking for an ACCURATE calculator software supplier for bearing frequencies. I currently have The Bearing Expert from International Source Index Inc. and am finding some serious descrepencies with between it and manufacturers info. i.e. - # of rollers,dimensions, etc.
Any suggestions?

 

[alexit]

Look to software called Kuegellager (v4) from University of Aachen in Germany. At least for angular contact bearings it is excellent match to real world measurements.

Alex

 

[alexsurf]

each manufacturer of bearing got his own internal construction for bearing
for FAG bearing contact :

http://www.fag-industrial-services.com

there are friendly

)

 

[lyngengr]

You can easily write your own calculator using Excel. You will need to know the internal geometry of the bearing, which can be obtained from the manufacturer. I can send you the spreadsheet we use for doing these calculations. If you have SKF bearings, they have a frequency calculator in their web site tools.

 

[electricpete]

Why do fault frequencies change:
1 - bearing manufacturs may periodically change their bearing designs slightly. The SKF6308 that you buy today may not have same fault frequency as the one installed in your pump 5 years ago.
2 - Bearing fault frequency depends upon contact angle which in turn may depend on loading. Can change for example with changing load on a pump which changes the axial load on the bearing.
3 - Extreme wear can have a slight effect.

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[electricpete]

My comments about load and wear were addressing slight deviations in fault frequency - perhaps 1% or less. If you are talking about bigger deviations these are probably not applicable.

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