Tribological data is required for the consideration of the solid conveying in the feed section. These are the values of barrel friction $μ_z$ and the screw friction $μ_s$.

Platzhalter Abbildung 5.16 Eingabemaske Tribologische Daten

Obtaining the necessary coefficients of friction constitutes a problem. It is recommended that users establish the necessary data by conducting test series on their own.