The pinion and gear tooth plots are made as shown below. These plots are also output to AutoCAD compatible files. These plots can also be copied to the Windows clipboard, for inserting in reports.
Specific sliding is plotted as a function of pinion radius. Specific sliding, plotted in the y-axis, is dimensionless. The pinion radius is plotted in inches. Note the rapid change in specific sliding of the pinion, as contact of the gear tip on the pinion (redline), approaches the form diameter of the pinion. Compressive stresses can be higher than those calculated by ISO or AGMA, when tooth contact occurs close to the base circle; this is when specific sliding is high.