一、常用电动自行车轮毂及其特点1、低速有刷电动轮毂这是一种外转子低速电机,电机转子与轮毂外壳一体,直接带动车轮转动,由于电动自行车对车速有20km/h的限制,故这种轮毂的额定转速大致在200-300r/min左右。这种轮毂的优点是没有齿轮减速系统和超越离合器,结构简单,制造工艺要求低,噪音低,可靠性较高。另外,因其转速较低,电刷寿命较长。由于具有可靠性高和价格比较便宜的特点,使该种轮毂在市场上有着很高的占有率。 First, the commonly used electric bicycle wheel hub and its characteristics 1, low-speed brush electric hub This is an external rotor low-speed motor, motor rotor and hub shell, directly driven wheel rotation, as the electric bicycle speed limit of 20km / h The rated speed of this hub is about 200-300r / min. The advantage of this hub is that there is no gear reduction system and clutch, the structure is simple, low manufacturing process requirements, low noise, high reliability. In addition, because of its low speed, longer brush life. Due to its high reliability and cheaper price, this kind of wheel hub has a high market share.