Disk drive apparatus

A disk drive apparatus including a magnetic disk on which data is recorded, a spindle motor for rotating the magnetic disk in a predetermined direction, a magnetic head for writing data on and/or reading out data from the magnetic disk, a support arm for supporting said magnetic head, and a voice coil motor for pivoting said support arm and thereby moving said magnetic head in a radial direction of the magnetic disk, said spindle motor having a hub on which the magnetic disk is mounted, a rotor magnet mounted on said hub, and a stator disposed opposite to said rotor magnet,

• the improvement being characterized in that said stator includes a stator core having an annular proximal end portion disposed on an outer side of said rotor magnet, a plurality of coil winding portions extending from said annular proximal end portion, and stator teeth portions each of which is provided on a free end portion of each of the plurality of coil winding portions, in that an armature coil is wound around each of said plurality of coil winding portions, and in that said stator teeth portions are disposed substantially equiangularly in a circumferential direction while at least part of said plurality of coil winding portions are disposed non-uniformly in the circumferential direction, whereby the armature coils wound around said plurality of coil winding portions are retracted from a path in which said support arm is moved.