Frictional characteristics of a fiber as a part of paper-based clutch facing

Abstract

Investigation on friction coefficient between steel and fibers as a part of paper-based clutch facing was carried out under different normal loads and sliding velocity using friction tester that steel rods nipped fibers in dry or lubricated condition. Fibers are made of cotton, aramid and carbon. Base oil is mineral oil. Lubricant additives are oleic acid, ZDTP, Ca-sulfonate and succinimides. Friction coefficient under dry conditions show lower than that under lubricated conditions. Friction coefficient show large value under small load and lubricated conditions, and the "μ-v" slope show almost constant in all conditions.