<p>A spindle motor wherein a rotor (6) is supported by a stator (1) through a thrust bearing (13) and a radial bearing (8). At least the thrust bearing (13) is a hydrodynamic bearing. The spindle motor is provided with a device for adjusting the thrust load that is applied to the thrust bearing (13). The load adjusting device has an electromagnet (42) that is provided on the stator (1) and a permanent magnet (43) that is provided on the rotor (6) in opposing relation to the electromagnet (42). Either the repelling force or the attraction force, which acts between the electromagnet (42) and the permanent magnet (43) is controlled by changing the current supplied to the electromagnet. <IMAGE></p>
