Development of novel tribometer to measure boundary friction under wide speed range from ultra-low to moderate

Abstract

A new type of cylinder-on-disk tribometer was developed that can measure friction under the boundary lubrication with varying sliding speed ranging from ultra-low (5μm/s) to moderate (17cm/s). As the tribometer was designed to measure friction at the specific positions of the disk surface, fine distinction of friction characteristic depending on the surface condition can be evaluated. This paper presents a special feature of the tribometer by showing several experimental data with both model lubricants and commercially available automatic transmission fluids.