空心转子优势：
advantages of hollow rotor:
1.空心转子重量减轻后，与常规转子的轴向扭力减弱，油田螺杆泵转子，启动扭矩降低，减速电机选型偏小，客户使用成本大-低，达到节能效果。
1. after the weight of the hollow rotor decreases， the axial
torsion of conventional rotor will recede， break-out torque will lower， gear
motor type will be relatively small， as well as customers use cost will
greatly lower with effect of environmental protection&energy saving
obtained.
2.因摩擦力与重量有密切关联，因此与同等实心转子对比，重量减轻后，泵在运行过程中转子摩擦力减弱，使用寿命同比增大。
2. because the force of friction is closely related to
weight， the force of friction of the rotor lowers&service life increases on
a year-on-year basis in the operation process of the pump after the weight1
decreases in comparison to the equivalent solid rotor.
3.泵在快速启动和高速运转过程中的震动明显减小。
3. pump vibration iously decreases in the process of quick
start&high-speed operation.
4.设备运行过程中，噪音分呗大幅度降低，不会有噪音污染。
4. in the operation process of the equipment， noise decibel
is greatly lowered without noise pollution.
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