Description:
Coreless Dc Motor is a specialized form of DC Motors. These motors are used where small motors and rapid acceleration are needed. The difference of a coreless motor is; this type of motor has a rotor that is constructed without any iron core. They can be in cylindrical, or a disc form.
Applications:
- robot projects like small positioning systems, small wheel systems, pan-tilt systems.
- small devices like cell phones, tablets, smart devices, etc.
- medical devices and lab equipment like small pumps, for shaking, for stirring
- office devices like printers, shutters, card readers...
Advantages of Coreless Dc Motors:
- High-efficiency rates (up to 85%) (Cored Dc Motors can reach 50%)
- High acceleration and deceleration rates and good controllability
- Small and compact design
- Smooth operation
- Lighter than cored DC Motors
- Longer battery life (low electricity consumption)
- Low electrical noise
Disadvantage of a Coreless Dc Motor:
As Coreless Dc Motors usually can reach very high RPMs and has a compact structure, these motors can heat quickly. Especially when running at the full load for a short time. So it is usually advised to use a cooling system with these motors. Overheating can be an important problem especially for Coreless Micro Dc Motors. So a disadvantage of a coreless motor is, it cannot handle overloads when compared to a cored motor. The bonding adhesive that holds the windings can lose its bonding character and the motor will be broken.
Features:
Size : 7 x 16.5mm
Output shaft: 0.8 mm
Output shaft length: 4.5mm
Lead length: about 50mm
Voltage: 3.7 V
No-load speed: 55000 RPM (the actual speed may be high or low)
No-load current: 60-100mA
Load speed: with 45mm propeller, the speed is about 30,000 rpm, the current is 1000mA