Patent ID: 8867165

Claim:
A spindle motor comprising: a stationary portion; and a rotating portion which is supported rotatably with respect to the stationary portion and centered on a center axis extending vertically; wherein the stationary portion includes: a base portion extending in a direction orthogonal or substantially orthogonal to the center axis extending vertically; a stator core arranged on a side of an upper surface of the base portion; and a coil attached to the stator core; the rotating portion includes: a magnet arranged on a radially inner side of the stator core; and a disk supporting portion including a first supporting surface which is in contact with a lower surface of a disk, the disk supporting portion being arranged radially outward of the magnet; the stator core includes: a ring-shaped core back; and a plurality of teeth protruding from the core back toward a radially inner side; the disk supporting portion is positioned radially outward from a radially inner end portion of the teeth and is positioned radially inward from the coil; the radially inner end portion of the teeth, the disk supporting portion, and the coil overlap each other in a radial direction; and all portions of the disk supporting portion which are in contact with the lower surface of the disk are arranged radially inward from the coil and radially outward from the radially inner end portion of the teeth.