I am having issues with excessive wear on a drive roller on a labeling machine. Two pinch rollers (knurled aluminum) press lightly against it to pinch a label web between and drive it. Originally the drive roller was made of nitrile rubber. It was wearing too fast so I changed it to a higher durometr of nitirile rubber. It was better but eventually the roller would wear excessively again. My rubber vendor suggested switching to a carboxylated nitrile rubber which is supposed to have better wear properties. This did not help much.
Looking at material properties of different rubber, it looks like polyurethane might be a better option. Any thoughts?
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