Motor

A motor comprising:

• a stator unit including,
• a base mount having a central area and a marginal area surrounding said central area,
• a tubular shaft extending from said central area and having an axial hole along a shaft axis, and
• a coil winding assembly sleeved on said tubular shaft;
• a rotor unit including,
• a carrier top having a center region and a peripheral region surrounding said center region,
• a spindle extending from said center region and configured to be inserted into said axial hole along the shaft axis and to be rotatable relative to said tubular shaft,
• a carrier surrounding wall extending from said peripheral region to terminate at a wall end, and having an inner surrounding surface which has a major surrounding region and a marginal surrounding region distal from and proximate to said wall end, respectively, said marginal surrounding region being spaced apart from said coil winding assembly in radial directions to define an annular space therebetween, and
• a permanent magnet assembly disposed on said major surrounding region to radially confront said coil winding assembly such that said rotor unit is permitted to rotate relative to said stator unit as a result of electromagnetic forces acting between said permanent magnet assembly and said coil winding assembly;
• and
• an anti-friction bearing unit disposed in said annular space, and having a plurality of bearings, each of which includes an outer race configured to rotate with said carrier surrounding wall.