By combining innovative measurement technology concepts in the field of distance and contact measurement and using detailed analysis methods, Maik Lazzara can present a comprehensive understanding of the motion mechanisms and tribological behavior of the piston pin bearing in an internal combustion engine. The author examines the relative movements of the bearing components and their mixed friction states under different operating conditions of the engine, identifying a sensitive and complex interaction between load-induced bearing contours, solid friction coefficients, and particularly the lubricant filling and supply.