Can a shaft be “too smooth”?
Yes. Regarding shafts for iglidur plain bearings, we recommend a roughness of 0.2 µm to 0.4 µm. A low degree of roughness can cause stick-slip effects or very fine nicks in the plastic, which can occur as a consequence of high adhesion forces. You can read more about “The right surface finish for shafts” in ourblog article.