Shaft Critical Speed - Between Bearings Arrangement:
 
Rotating Machinery - Between Bearings Arr. - Shaft 1st Critical Speed

(Freely supported shaft with disc between bearings and rigid (infinitely stiff) bearing supports.)

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Disclaimer: Although every effort was made to ensure accuracy of calculated results, use of the software is at the users risk. The software is intended for use by experienced rotating machinery specialists.


Enter shaft dimensions, disc weight and position of disc. (Shaft is assumed to be steel).

Shaft Diameter (in): Disc Weight (lbs):
Bearing Centers (in): Distance - Bearing to Disc (in):

Shaft Critical Speed =  rpm