On 23 Mar 2006 15:27:35 -0800, "John2005"
wrote:
snip
It's difficult to make the cam thicker than 3/8" due to various
design constraints, but there is a small chance I could go to a
thickness of 7/16" or possibly ½" at the very extreme. This would
give a maximum contact stress of 306,657.76 PSI & 286,852.07 PSI
respectively.
snip
Have you considered a laminated design like a master padlock.
Make thinner cams and stack them up.

What is your anticipated volume?