What are the characteristics of hollow cup motors?
Coreless motors are divided into brushed and brushless types, featuring a rotor without an iron core and a stator without an iron core. The coreless motor breaks through the traditional rotor structure in design, adopting an ironless rotor, also known as a coreless cup-type rotor. This innovative rotor design completely eliminates energy loss caused by eddy currents from the iron core. Simultaneously, it significantly reduces weight and rotational inertia, thereby minimizing mechanical energy loss in the rotor itself. The structural modification of the rotor greatly enhances the motor's operational characteristics, not only delivering outstanding energy-saving features but also achieving control and driving capabilities unattainable by iron-core motors.
The coreless motor boasts outstanding energy-saving characteristics, sensitive and convenient control features, and stable transmission performance. The coreless motor primarily exhibits the following characteristics:
Energy-saving characteristics: The energy conversion efficiency is very high, typically exceeding 70%, with some products reaching over 90% (iron-core motors generally around 70%).
2. Control Characteristics: Rapid start-up and braking, with extremely fast response times—mechanical time constant less than 28 milliseconds (some products can achieve under 10 milliseconds, while iron-core motors typically exceed 100 milliseconds). At high-speed operation within the recommended range, speed can be adjusted sensitively and conveniently.
3. Transmission characteristics: Minimal rotational fluctuations, high energy conversion efficiency, and rapid speed adjustment;
4. Small specifications: The minimum diameter can be as small as 3.4mm.
5. High Precision: The transmission accuracy of the planetary gearbox can be as high as 1-2 arc minutes.
6. Maintenance-free: Hollow cup motors require no maintenance.
7. Long lifespan: Continuous transmission for up to 500 hours;
8. High transmission efficiency: The planetary gearbox achieves a transmission efficiency of over 95%;
9. Drag Characteristics: The operation is highly stable, with minimal speed fluctuations. As a miniature motor, its speed variation can be easily controlled within 2%.
10. Wide Range of Applications: Hollow cup motors are widely used in smart homes, electronic products, automotive drives, communication devices, industrial automation, and robotic drives.
