Radial coupling-free quadrupole hybrid magnetic bearing

The invention discloses a radial coupling-free quadrupole hybrid magnetic bearing which comprises a stator and a rotor located on the inner ring of the stator, wherein the stator comprises an X statorcore, a permanent magnetic ring and a Y stator core which are successively arranged from left to right; the rotor comprises a cylindrical rotor core and a rotation shaft; the X stator core is uniformly provided with two suspended teeth along the inner circumference and at symmetrical positions in the +x axis and the -x axis directions; the Y stator core is uniformly provided with two suspended teeth along the inner circumference and at symmetrical positions of the +y axis and the -y directions; all the suspended teeth have a zigzag structure, each suspended tooth is close to one end face of the rotor core, is fitted with the radian of a circumferential face of the rotor core, and has the same radial width with the rotor core with a face-to-face position, and a radial gas gap with a same gas gap length is formed b