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High-speed Hollow Cup Motor

High-speed Hollow Cup Motor

There is no iron core in the rotor of this High-speed Hollow Cup Motor. Instead, it rotates around the outside of the cylindrical magnet with a copper wire wound in a basket structure (coil). Its lighter basket rotor makes the moment of inertia smaller, allowing for rapid acceleration and deceleration. The absence of a core in the rotor prevents the cogging caused by magnetic induction, so the rotation is smooth and the noise and vibration are minimal.

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Product features:

1. There is no iron core in the rotor of this High-speed Hollow Cup Motor. Instead, it rotates around the outside of the cylindrical magnet with a copper wire wound in a basket structure (coil). Its lighter basket rotor makes the moment of inertia smaller, allowing for rapid acceleration and deceleration. The absence of a core in the rotor prevents the cogging caused by magnetic induction, so the rotation is smooth and the noise and vibration are minimal.

2. High-speed Hollow Cup Motor becomes feasible to miniaturize the motor itself by using a rare earth magnet having high magnetic properties and a rotor of a basket configuration. In order to obtain a better coil space factor, we have developed an automatic winding machine inside it to achieve high winding density and precise alignment. Auto-winding technology allows us to increase motor torque while reducing current consumption. A well-balanced coreless coil winding and no cogging function for smooth rotation, low moment of inertia and miniaturization of the motor body. It has no cogging and can quickly respond to fine-tuning of voltage and current. The rotor diameter is reduced to control the moment of inertia, the stator side coil is thickened to increase the current, the number of windings is increased, and the air gap between the stator and the rotor is as small as possible. These adjustments all contribute to increased torque.

3.Hollow cup motor breaks through the Rotor structure of traditional motor and use a coreless rotor, so it is also called coreless rotor. This novel rotor structure completely eliminates the loss of electrical energy due to eddy currents caused by iron core. At the same time, its weight and moment of inertia are greatly reduced, thereby reducing the mechanical energy loss of the rotor. Due to the structural changes of the rotor, the performance of the motor has been greatly improved. High-speed Hollow Cup Motor not only has outstanding energy-saving features, but more importantly, it has the control and drag characteristics that the iron core motor cannot achieve.

Product advantages:

1. Energy conversion efficiency is very high, its maximum efficiency is generally above 70%, and some products can reach more than 90% (iron core motors are generally 70%).

2. Start and brake quickly, the response is extremely fast, the mechanical time constant is less than 28 milliseconds, some products can reach within 10 milliseconds (the iron core motor is generally more than 100 milliseconds); it can be conveniently operated under the high speed operation in the recommended operating area. The ground is sensitive to the speed.

3. The running stability is very reliable, the fluctuation of the speed is very small, and the fluctuation of the speed of the micro motor can be easily controlled within 2%.

Product application:

Optical equipment

Construction tools

Measuring equipment

High-end toys

Medical equipment

Mobile communication device

Product specifications:

Model: ZW-18

Brand: SHJ

Material:SS

Application: Aerospace 

Power: 30W

Rotating speed: 15000r/min

Torque: 0.03Nm

Product drawing:

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