Often, requests for rolling element bearing calculations appear here. I'd attached a simple bearing frequency calculator which may be useful.
You need to know the following information:
Bearing pitch diameter or bearing bore and outer diameter
The number of balls or rollers
The contact angle (use 0 if unknown)
The rotation rate.
Bearing dimensions may be inch or metric as long as the same units are used throughout.
The calculated frequencies are in the same units as the rotation rate. IF the roation rate is in Hz, the bearing tones are in Hz; if the rotation rate is entered as RPM, the calculated tones will be in CPM. Enter a rotation rate of 1 to calculate the results in orders.
No installation is needed. Just put the program file (BearingCalcs.exe) and the help file (help.pdf) in the same directory.
You may be familiar with my VibCon program for converting between various vibration units. You can find it on CTC's web site at www.ctconline.com. Bearing calculations may be incorporated into VibCon in the future.
I hope you find this a useful program.