A power tool includes a motor housing defined by cooperating clamshell halves, a front housing portion coupled to the motor housing, and an end cap coupled to the motor housing opposite the front housing portion. A motor is supported within the motor housing. The motor includes an output shaft defining an axis. A fan is coupled for co-rotation with the output shaft. The power tool also includes a bearing configured to support the output shaft for rotation about the axis and a bearing retainer axially and radially securing the bearing within the end cap.