Abstract: A spindle motor is disclosed, the spindle motor including a bearing assembly including a first floor plate, a first lateral plate extended from an upper edge of the first floor plate, a second lateral plate formed by being protruded from the first floor plate to a direction facing a bottom surface, a bearing housing including the second floor plate and a bearing formed with a rotation shaft hole by being accommodated in the bearing housing; a base plate formed with a burring unit coupled to a periphery of the first lateral plate; a stator including a core coupled to the periphery of the first lateral plate and a coil wound on the core; a rotation shaft inserted into the rotation shaft hole of the bearing; a rotor including a yoke coupled to the rotation shaft and a magnet arranged on the yoke to face the core; an adhesive member arranged at a space formed by the first floor plate, the second floor plate and the burring unit; and a strength reinforcement member including a body fixed to a bottom surface of the