Patent ID: 8324776

Claim:
A spindle motor comprising: a shaft arranged in a vertical direction along a central axis; a base member including a substantially cylindrical holder portion arranged around the central axis; a bearing unit arranged radially inward of the holder portion; and a rotating portion including a mounting surface on which a disk is to be mounted, the rotating portion being arranged above the base member to rotate about the central axis; wherein a portion of an adhesive containing an electrically conductive material and a portion of an adhesive containing an externally stimulated curing material and/or an anaerobic curing material are arranged in a clearance space defined between a radially innermost circumferential surface of the holder portion and a radially outermost circumferential surface of the bearing unit; the adhesive containing the electrically conductive material is arranged above the adhesive containing the externally stimulated curing material and/or the anaerobic curing material; a lower opening is defined between a lower radially inner surface of the holder portion and a lower radially outer surface of the bearing unit, the lower opening having a radial dimension that is greater than a radial dimension of the clearance space; the adhesive containing the electrically conductive material is arranged only in one or more portions of the clearance space in a circumferential direction such that the bearing unit is not completely surrounded by the adhesive containing the electrically conductive material in the circumferential direction; and a total amount of the adhesive containing the electrically conductive material is smaller than a total amount of the adhesive containing an externally stimulated curing material and/or an anaerobic curing material.