A motor includes a base having a shaft tube. A rotor includes a shaft rotatably supported by a shaft supporting assembly in the shaft tube. The shaft includes a retaining groove. A stator is coupled to the shaft tube of the base and includes at least one limiting member. A distal end of the at least one limiting member is received in the retaining groove of the shaft and prevents disengagement of the shaft from the shaft supporting assembly. The at least one limiting member further includes a bottom facing the shaft supporting assembly. A gap is formed between the bottom of the at least one limiting member and a top portion of the shaft supporting assembly. The gap provides a space for deformation of the at last one limiting member so that the distal end of the at least one limiting member extends into the retaining groove.