Description
The 12mm Micro Planetary DC Gear Motor is a compact high-efficiency coreless geared motor designed for miniature robotics, smart locks, electronic devices, automation mechanisms, precision transmission systems, and DIY motion control projects.
Featuring a precision planetary gearbox and coreless DC motor structure, this motor delivers smooth low-noise operation, stable low-speed torque output, and efficient power consumption in an ultra-compact form factor. The motor supports forward and reverse rotation as well as PWM speed control, making it suitable for embedded motion applications and micro robotic systems.
Multiple RPM variants are available from high-speed 1992RPM to ultra-low-speed 20RPM versions for different torque and speed requirements.
Features
- Ultra-compact 12mm planetary gearbox motor
- Coreless DC motor structure
- Low noise operation
- Supports PWM speed control
- Forward and reverse rotation
- High torque at low speed
- Precision planetary reduction gearbox
- Low power consumption
- Suitable for continuous operation
- Lightweight design
Applications
- Mini robot projects
- Smart locks
- Electronic valves
- Precision transmission devices
- DIY automation systems
- Camera modules
- Medical equipment
- RC projects
- Embedded motion systems
- Micro actuators
- Small mechanical devices
Specifications

RPM Variant Specifications
Technical Dimensions
| Item | Size |
|---|---|
| Motor Diameter | 12mm |
| Total Length | 35.6mm |
| Shaft Diameter | 3mm D-shaft |
| Shaft Length | 8.5mm |
| Mounting Hole | 2 × M2 |
| Mounting Hole Depth |
2.5mm |
Why This Variant Structure Is Best
For micro gear motors, overseas buyers search primarily by:
- RPM
- Torque
- Voltage
- Shaft type
Using RPM as the primary Shopify variant is the most SEO-friendly and conversion-friendly structure for independent robotics stores.
What’s Included
- 1 × 12mm Coreless Planetary DC Gear Motor
FAQ
Q1: Does this motor support forward and reverse rotation?
A: Yes. The motor supports bidirectional rotation by reversing polarity.
Q2: Can this motor be speed controlled?
A: Yes. PWM speed control is supported.
Q3: Which RPM version has the highest torque?
A: The 20RPM version provides the highest torque output.
Q4: Is this motor suitable for robotics?
A: Yes. It is widely used in mini robots, smart mechanisms, and precision motion systems.
Q5: What shaft type does this motor use?
A: It uses a 3mm D-shaped output shaft.
Q6: Can this motor run continuously?
A: Yes. The motor is designed for long-duration operation under proper load conditions.
Q7: What is the advantage of a planetary gearbox?
A: Planetary gearboxes provide higher torque density, smoother transmission, and improved durability compared to standard spur gear systems.



