Product Description
Micro Coreless Brushed DC Motors are ultra-small, high-performance electric motors that use a coreless (ironless) rotor and brushes for commutation. Unlike traditional brushed motors with an iron-core armature, coreless motors use a lightweight coil winding suspended inside a permanent magnetic field. This design makes them faster, smoother, and more efficient, especially at small sizes.
They are typically found in applications requiring high speed, fast response, low vibration, and compact size.
On stock series: 10 series, 12 series, 13 series, 15 series, 16 series, 17 series, 22 series coreless brushed DC motors. Voltage range from 5V to 12V.
Advantage: high power density, small moment intertia, quick start and stop, small size but high conversion efficiency. Easy to mount with micro planetary gear reducer.
We offer these DC coreless brush motor mainly for Military Industry and Precision Medical Instruments.
Vol Range: 5V-12V
No-loading Speed: 3000-25000RPM
Rated Power: 0.11-50 W
No-loading Current: 0.035-0.5A
Rate Torque: 0.5 - 40.12 mN.m
Efficiency: 69%-85%
1. Coreless (Ironless) Rotor
Uses a hollow, basket-shaped copper winding instead of an iron core.
Results in very low inertia, enabling extremely fast acceleration and deceleration.
2. Brushed Commutation
Simple electrical design using brushes and a commutator.
No ESC (electronic speed controller) required—just connect to a DC power supply.
3. Micro Size
Extremely compact, usually 4–20 mm in diameter.
Ideal for portable, battery-powered, or miniaturized devices.
✔ Fast Response & High Speed
Coreless design allows the rotor to spin rapidly with minimal lag.
✔ Smooth, Low-Noise Operation
No iron teeth → no cogging → stable rotation, ideal for precision movement.
✔ High Efficiency
Reduced weight and magnetic losses improve energy conversion.
✔ Lightweight & Compact
Perfect for micro devices where space and weight matter.
✔ Easy to Drive
Runs directly from DC power, no complex control electronics required.
Micro coreless brushed DC motors are widely used in:
Drones (mini quadcopters)
RC toys and hobby models
Medical devices (pumps, surgical tools)
Wearable electronics
Micro pumps and micro fans
Camera autofocus and lens systems
Precision micro-robots
Electric toothbrushes and shavers
Portable instruments
| Motor Type | Advantages | Disadvantages |
|---|---|---|
| Micro Coreless Brushed | Fast response, smooth, lightweight, simple control | Brush wear, limited heavy-load capability |
| Micro Brushless (BLDC) | Long life, high efficiency, no brushes | Requires controller, higher cost |
| Micro Iron-Core Brushed | Cheap, rugged | More vibration, slower response, heavier |
DC power flows into the motor through the brushes.
Brushes transfer power to the commutator.
The coreless rotor coil becomes an electromagnet.
Magnetic interaction with the permanent magnets causes rotation.
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