If this option is selected, the static load capacity is calculated according to (ISO 3408-5, 2006). In this case, material properties like Youngs modulus have no effect on the static load capacity.
If the option is not selected the static load capacity is calculated according (ISO 3408-5, 2006), but using f0 according ( ISO/TR 10657, 1991) instead of k0. In this case, the static load capacity is based on a permissible contact stress of 4200 MPa as for axial ball bearings according (ISO 76, 2006).