An apparatus comprising a motor comprising a rotor and a stator, wherein the rotor is located at least partially in a rotor receiving area of the stator, wherein the stator comprises: a stator member having teeth and at least one component receiving area spaced from the rotor receiving area, wherein the teeth comprise a first set of the teeth and a second set of the teeth, wherein the teeth of the first set of teeth are longer in a radial direction from the rotor receiving area than the teeth of the second set of teeth, and wherein the second set of teeth are located closer to the least one component receiving area than the first set of teeth, and at least one coil winding on the stator member, and a motor housing having the stator therein; and at least one component movably located in the at least one component receiving area, wherein the at least one component comprises a rod having a screw thread located in the at least one component receiving area, wherein the motor housing is connected to the screw thread of the rod such that rotation of the rod causes the motor housing to longitudinally move along the rod.