Disk drive device with motor coil wiring arrangement to reduce thickness and suppressed torque decrease

The disk drive device includes a base member, a hub, a bearing unit which is arranged on the base member and which rotatably supports the hub, and a spindle drive unit which drives the hub to rotate. The spindle drive unit includes a stator core having a salient pole, a coil wound around the salient pole and a magnet opposed to the salient pole. The hub formed of magnetic material includes an outer cylinder portion engaged with an inner circumference of a recording disk and an inner cylinder portion to which an outer circumference of the magnet is fixed. The base member having a wire hole through which a wire from the coil passes, and a concavity that is formed at a bottom surface of the base member wherein the wire passes through the wire hole along a bottom face of the base member to a wiring member at the concavity.