Wear of PTFE (Teflon) for Spinner Support

[hafhaq]

I'm considering using Teflon as a support block pressed against a spinning cylinder in a roll forming machine. Currently it uses a steel roller, but it is a nuisance and expensive to replace the bearings, the roller, as well as the fact that the design is poor causing leaks in the hydraulic cylinders. I need to know how to determine what the wear would be on the block of teflon given the wear factor, the speed of the spinning cylinder, and the compressive load.

 

[Flamefront]

I've seen good results with a zirconia surface coating for steel rollers in tough situations. I have used the coating with success. Company is at

http://www.cccintl.com

It works on bearings as well.

 

[mjcook]

Posted values for maximum stress on PTFE before it starts to cold flow are around 5000 PSI. Will there be enough pressure on the PTFE block that it will cold flow rather than wear?