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Posted by Ned Simmons on March 23, 2006, 11:39 pm
Please log in for more thread options johnjmechanical@yahoo.com says...
>
> 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 =3F" at the very extreme. This would
> give a maximum contact stress of 306,657.76 PSI & 286,852.07 PSI
> respectively.
>
Most rolling bearings are made from AISI 52100, which is optimized for
heavy cyclical loads. At Rc60 or so it should be in the ballpark for
compressive strength; how long it'll hold up under cyclical loading at
300 ksi is another question. You may be better off looking for
information on the design of roller bearings where high cyclical
stresses are the norm. There's a wealth of experience predicting bearing
life vs. load which would be applicable to your problem.
Ned Simmons
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