What is the difference between a high-speed outer rotor motor and an inner rotor motor?
Lvbu wheel has two kinds of motor: high-speed outer rotor motor (MFO series) and high-speed inner rotor motor (MFI series). D series are outer rotor motors, and V series are inner rotor motors. The difference between the two is one has an outer rotor while the other has an inner rotor.
Inner rotor motors place the stator on the outside with the rotor on the inside. Outer rotor motors place the stator on the inside with the rotor on the outside.
The outer rotors generally have more magnet poles, lower speed, bigger torque, a relatively bigger size, smaller reduction gear, and a relatively cheaper price. The inner rotors generally have less magnet poles, higher speed, smaller torque, and smaller size. A larger reduction gear is required to increase the torque, and the price is higher.
The external rotor motor is easier to repair and has better heat radiating. The repairing of the inner rotor motor is more difficult
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