Example Gear Calculation

Note: Slightly differing values for the Lewis form factor, Y, may be found according to which book you use to obtain the information. The tooth root fillet radius is given in some articles as 0.3 times the module and as 0.38 m in others, this latter value has been used.
From the notes on Stress Concentration, you can link to the java applet to check out the effects of varying dimensions on stress concentration, but note that the configurations are not the same as in this eg.

David J Grieve, 16th October 2001.