The first part, the polar axis (Pole Core) made with thin sheet metal insulation is enclosed by rods attached to frame. The end part that is curved so curved round of the rotor are called magnetic polarity. (Pole Shoes) have a purpose polar magnetic rotor most closely to achieve minimum air channels. To achieve minimum air channels will result in the path the magnetic force of magnetic poles from the magnetic poles through to most rotor and then cause a torque or torque of the motor as much. There are rotating (Torque).
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