Posted by Web Gear Services on February 08, 2001 at 00:15:47:
In Reply to: pinion gear posted by sam on February 02, 2001 at 17:29:41:
The numbers which you have indicated for tooth thickness show a DP slightly smaller than 4 (ie.approx 4.364) which also is correct to your observation.
There is not sufficient information here to calculate pressure angle. You best bet is that knowing your actual pitch diameter, you measure the pressure angle at that pitch diameter from the part itself.
Another way to is measure tooth thickness on the involute at other diameters and do a reverse calculation to see what pressure angle fits that profile.
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