A blower (100), comprising a housing including an inlet (123) and an outlet (125), a bearing-housing structure (130) provided to the housing and adapted to rotatably support a rotor (170), a motor (140) provided to the bearing-housing structure and adapted to drive the rotor and an impeller (180) provided to the rotor. The bearing-housing structure includes a bearing shaft (170) having a bearing surface that rotatably supports the rotor. The motor includes a stator assembly, a magnet (150), and a rotor cap (160). The rotor cap includes an interior surface that supports the magnet and an exterior surface that supports the impeller. The rotor cap is engaged with the rotor such that the stator assembly acts on the magnet to retain the rotor cap and hence the impeller on the rotor, and to cause spinning movement of the rotor cap and hence the impeller in use.
