The study analysed the tribological performance of five different polymer composites: polyetheretherketone reinforced with 30% carbon fibres—PEEK CF30, 10% fibres, graphite and polytetrafluoroethylene—PEEK MOD, polytetrafluoroethylene 25% fibres—PTFE CF25, polyoxymethylene fibres—POM CF30 ultra-high molecular weight polyethylene—UHMW PE. polymers were tested under sliding regime a reciprocating...