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4340 rolls

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HUPE

Industrial
Joined
Apr 26, 2006
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1
Location
CA
Hi,

I have a set of corrugator rolls to make waves on pool walls. My rolls are about 8" dia x 60" long. The rolls flex in the middle. (0.006") Is it a normal situation? I have others of 52" and .200" bigger on diameter and they flex less. Could it be the difference or something is wrong with my rolls?
 
The shorter rolls are almost 70% stiffer, plus they see less load due to their shorter length.
 
Hupe,
Philrock is correct. I think this is why some roll makers design in a small increase in roll diameter toward the center of the length. It offsets some of the deflection and adds s bit of stiffness. You might check with the manufacturer as to whether this is the case with your setup.
 
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