Motor for a steering system of a motor vehicle and steering system for a motor vehicle

An electric motor for a steering system of a motor vehicle, comprising:

• a stator;
• and
• a rotor mounted in the stator so as to be rotatable about a rotor axis;
• the stator having a stator outer diameter and a stator inner diameter and including stator teeth which project radially inwards and delimit the stator inner diameter, and the number of which corresponds to a number of stator teeth, and which each have a stator tooth width, and which are connected to each other externally via a stator yoke having a radial stator yoke thickness, and between each of which a stator gap having a stator gap width is formed, and which carry at least one stator winding;
• the rotor having a rotor diameter and magnets which are offset from each other over the outer circumference in each case at a pole angle and the number of which corresponds to a number of poles, and which extend parallel to the rotor axis, and which each have a magnet thickness in the radial direction and a magnet width in the circumferential direction, the magnet width extending over a magnet angle relative to the rotor axis, and the magnets are cylindrically curved with a magnet outer radius;
• wherein an air gap having a radial air gap width is formed between the stator teeth and the magnets;
• wherein the number of stator teeth is 12 or a multiple of 12;
• wherein the number of poles is 8 or a multiple of 8;
• wherein the ratio of the magnet thickness to the magnet width is between 0.2 and 0.3;
• wherein the ratio of the stator gap width to the stator tooth width is between 0.3 and 0.4;
• wherein the ratio of the stator inner diameter to the stator outer diameter is between 0.45 and 0.55;
• wherein the ratio of the stator inner diameter to the air gap width is between 45 and 55;
• wherein the ratio of the magnet angle to the pole angle is between 0.85 and 0.95;
• wherein the ratio of the magnet outer radius to the rotor diameter is between 0.2 and 0.3;
• wherein the ratio of the stator yoke thickness to the stator tooth width is between 0.65 and 0.75.