Magnetic suspension, which replaces a mechanical guide means with a magnetic guide system, allows much lower losses. Magnetic suspension is a perfect candidate for holding and guiding the moving plate (rotor) of the linear parallelepipedic electric machine. It is an innovative solution to replace either conventional ball bearings or very sophisticated and expensive active magnetic bearings. The passive centering device with permanent magnets is used because it is combined with a system for compensating friction forces. In order to master the stable control of the centering device, we need to know all its static characteristics (without rotational movement). The normal force is calculated by the finite element method using the ANSYS MAXWELL software.