Regarding the measurement of the Coefficient of Friction (COF) of ropes and belts on sheaves standards often remain unspecific (e.g. DIN EN 81-20:2020 Chapter 5.5.3). COF assessment is often described only on a system level (e.g. DIN EN 81-20:2020 Chapter 6.3.3) in terms of preventing specific malfunction events. In contrast… Weiter lesen„How to preciscely measure friction – e.g. on elevator ropes and sheaves“