The Difference Between Hollow Cup Motors And Ordinary Motors

The hollow cup motor uses a coreless rotor, also known as a hollow cup type rotor, which replaces the rotor structure of an ordinary motor. There are many differences between hollow cup motors and ordinary motors, which are outlined below.
1. Structural differences
Ordinary motors consist of a stator, rotor and other components
In a hollow cup motor, a coreless rotor, also known as a hollow cup rotor, replaces the rotor structure of a normal motor. The unique rotor structure completely eliminates the power loss caused by eddy currents in the core.
Because the weight and rotational inertia of the rotor itself are simultaneously reduced significantly, the rotor loses less mechanical energy. As a result of the change in the hollow cup rotor structure, the motor's operating performance is significantly improved. The hollow cup motor not only has special energy-saving characteristics, but also has control and dragging capabilities that cannot be achieved with iron core motors.

2. Different characteristics
Hollow cup motors are more efficient than ordinary motors.
(1) Energy-saving characteristics, hollow cup motor energy conversion efficiency is very high, the maximum efficiency can reach 70%, some goods can reach more than 90%.
(2) control characteristics, hollow cup motors start and brake quickly, extremely fast response, mechanical time constant is less than 28 ms, some can reach within 10 ms (iron core motors are generally more than 100 ms); within the working range of the specified high-speed operation, the speed can be adjusted sensitively and easily.
(3) dragging characteristics, as a micro-motor, speed fluctuations can be controlled within 2% at any time, and the operating stability is quite reliable, with very slight speed fluctuations.

3. In addition, the weight and volume of the hollow cup motor can be reduced by up to half compared with the iron core motor of the same power, and the energy density is significantly increased.
The above is the difference between hollow cup motor and ordinary motor for your reference, for more information, please feel free to contact us!