Disc drive spindle motor having tuned stator with adhesive grooves

A disc drive spindle motor includes a central axis, a stationary member, a rotatable member which is rotatable with respect to the stationary member and a bearing interconnecting the rotatable member with the stationary member. A data storage disc is attached to the rotatable member. A stator is supported by the stationary member at an interface for rotating the rotatable member about the central axis with a driving force frequency. The stator has a resonant vibrational frequency. The interface has a plurality of recesses which are spaced axially from one another with respect to the central axis. An adhesive is applied within a selected set of the plurality of recesses and forms a bond between the stator and the stationary member. The set of recesses is selected such that the resonant vibrational frequency is different than the driving force frequency.