Magnetic suspension bearing, assembling method thereof and motor

The invention provides a magnetic suspension bearing, an assembling method thereof and a motor. The magnetic suspension bearing comprises an inner iron core and an outer iron core arranged on the outer side of the inner iron core in a sleeving mode, wherein a plurality of pieces of magnetic steel are arranged on the outer circumferential wall of the inner iron core at equal intervals, and the magnetic steel is located between the inner iron core and the outer iron core so as to connect the inner iron core with the outer iron core. According to the magnetic suspension bearing, the assembling method thereof and the motor, the inner iron core and the outer iron core are positioned through the magnetic steel; a positioning aluminum ring in the prior art does not need to be adopted for positioning the inner iron core and the outer iron core; on the one hand, the structure of the inner iron core can be constructed into a symmetrical structure, the symmetry of an electromagnetic field is improved, the control diffic