Product Description
The 1220 Coreless Planetary Gear Motor is a compact high-precision micro DC gearmotor designed for robotics, automation systems, smart devices, miniature mechanisms, and electronic equipment requiring stable low-speed output and compact size.
Featuring a 3-stage planetary reduction structure with a 1:144 gear ratio, this miniature gear motor delivers smooth torque transmission, low noise operation, and improved efficiency compared to traditional spur gear motors. The compact 12mm diameter body combined with a lightweight 17g design makes it ideal for space-constrained robotic and industrial applications.
This micro metal gearmotor supports a wide DC input voltage range from 3V to 12V, allowing flexible integration into battery-powered robotics projects, small automation modules, miniature actuators, smart locks, RC devices, camera systems, DIY robotics, and precision electronic mechanisms.
The D-shaft output design improves coupling stability and reduces slippage during operation, making it suitable for wheel drive systems, robotic joints, precision transmission systems, and compact motion control assemblies.
Built with a coreless motor structure, the motor provides smoother startup characteristics, lower inertia, reduced vibration, and improved responsiveness for precise low-speed control applications.
Key Features
- Compact 1220 micro coreless planetary gear motor
- 3-stage planetary gearbox design
- DC 3V–12V wide voltage operating range
- 1:144 gear reduction ratio
- Low-speed high-torque output
- Lightweight 17g miniature structure
- Stable D-shaft output design
- Compact 12mm diameter body
- Suitable for robotics and precision automation
- Smooth and low-noise operation
- Ideal for battery-powered systems
- Compatible with DIY robotics and smart devices
Specifications
| Parameter | Value |
|---|---|
| Product Type | Coreless Planetary Gear Motor |
| Motor Diameter | 12mm |
| Motor Body Length | 20mm |
| Total Length | 38mm |
| Output Shaft Length | 5.5mm |
| Output Shaft Diameter | 3mm |
| D-Shaft Flat Diameter | 2.5mm |
| Weight | 17g |
| Operating Voltage | DC 3V–12V |
| Gear Reduction Ratio | 1:144 |
| Gearbox Type | 3-Stage Planetary Gearbox |
| Motor Structure | Coreless DC Motor |
| Output Shaft Type | D Shaft |
| Rotation Speed @3V | 30 RPM |
| Current @3V | 27mA |
| Rotation Speed @6V | 61 RPM |
| Current @6V | 27mA |
| Rotation Speed @12V | 123 RPM |
| Current @12V | 27mA |
Package Includes
- 1 × 1220 Coreless Planetary Gear Motor
Applications
- Miniature robotics
- Smart electronic devices
- Precision automation systems
- DIY robot projects
- Micro actuator systems
- RC models and mechanisms
- Camera sliders and pan-tilt systems
- Electronic locks
- Medical miniature mechanisms
- Compact conveyor systems
- Educational STEM robotics
- Precision transmission equipment
FAQ
What is the gear ratio of this micro gear motor?
This motor uses a 1:144 three-stage planetary reduction gearbox designed for low-speed and higher torque output applications.
What voltage does this gear motor support?
The motor supports a wide operating range from DC 3V to 12V.
What is the speed of the motor at different voltages?
- 3V: 30 RPM
- 6V: 61 RPM
- 12V: 123 RPM
Is this motor suitable for robotics projects?
Yes. Its compact size, lightweight structure, and stable low-speed output make it suitable for robotics, automation, and miniature motion systems.
Does this motor use a planetary gearbox?
Yes. It features a 3-stage planetary gearbox for smoother transmission, improved durability, and stable torque output.
What type of output shaft does this motor use?
The motor uses a 3mm D-shaft output with a 2.5mm flat section for secure coupling installation.
Can this motor be used with battery-powered devices?
Yes. The low current consumption and wide voltage range make it suitable for portable battery-powered robotics and electronic systems.
Is this motor compatible with motor drivers and PWM speed control?
Yes. The DC motor can typically be controlled using compatible DC motor drivers and PWM speed controllers within the rated voltage range.
