a. Non‐linear mechanism stiffness coefficient, γ, as a function of the number of contacts of the mechanism nnR. Model predictions (hollow symbols) are compared to experimental data points (filled symbols). Star: change of number of rollers. Circle: change of number of contacts per roller. b. Load distribution predicted by the model for F = 30 kN (8 rollers, 25 contacts per roller, $\widehat{f}$ = 150 N). Load distribution is not uniform and concentrates at the force/clamping side. Blue circle: Roller‐screw thread contact. Green diamond: Roller‐nut thread contact.