Greartisan N20 DC 12V 600RPM Gear Motor with Metal Gearbox for DIY Robotics
Greartisan N20 DC 12V 600RPM Gear Motor with Metal Gearbox for DIY Robotics
The Greartisan N20 DC gear motor operates at 600 RPM with a 1:50 reduction ratio, offering a rated torque of 0.4 Kg·cm from a tiny 15.2 x 12 x 10 mm frame. Designed for DIY enthusiasts and small automation builders, this metal-gearbox motor fits into projects like electronic locks, smart switches, and 3D printer upgrades. Its D-shaped 2.5 mm output shaft provides a secure mechanical connection for gears or wheels.
What torque does this N20 motor deliver?
According to the manufacturer, the motor provides a rated torque of 0.4 Kg·cm at 12 V and 200 mA. This is suitable for light-duty tasks such as driving small mechanisms in RC toys, label dispensers, or curling devices. The metal gearbox and precision-cut steel gears help maintain consistent torque output under load. Note that stalling the motor or exceeding the rated current may cause overheating and damage.
Built with precision materials
The motor uses an imported steel plate machined on seven different lathes, followed by four secondary processes for dimensional accuracy. The armature employs a three-layer copper stamping for better wear and heat resistance. The gears are M0.15 micro-module type, made using clock-gear technology with six processing steps. The housing uses high-temperature black plastic with double rivets to prevent separation at high speeds. These details contribute to the motor's reliability in continuous operation.
Technical specifications at a glance
| Voltage | 12 V DC |
| No-load Speed | 600 RPM |
| Rated Torque | 0.4 Kg·cm |
| Rated Current | 200 mA |
| Reduction Ratio | 1:50 |
| Output Shaft | 2.5 mm diameter, 9.2 mm length (D-shape) |
| Gearbox Size | 9 x 12 x 10 mm |
| Motor Size | 15.2 x 12 x 10 mm |
| Weight | 9 g |
Frequently asked questions about the N20 gear motor
How do I connect the motor wires?
The red lead connects to the positive terminal and the black to negative. Reversing the polarity changes the rotation direction.
What is the recommended operating temperature?
The motor can be used between 0°C and 70°C. Store it in a dry place away from corrosive gases and high humidity.
Can I run this motor at a lower voltage?
The manufacturer specifies 12 V DC as the rated voltage. Using other voltages may affect performance and durability. Always stay within the recommended voltage and current range to avoid premature failure.
Handling and usage guidelines for long life
To maintain performance, keep the motor within its rated voltage and current ranges. Handle the motor by its shell whenever possible to avoid shaft damage. Never stall the motor or run it near stall condition for extended periods, as this can cause overheating and permanent failure. Store the motor in a cool, dry environment between 0°C and 40°C with humidity under 90% RH. The recommended operating temperature is 0–70°C. Avoid exposure to high heat, moisture, or corrosive fumes.
The N20 motor suits a wide range of compact mechanisms: from electronic door locks and smart switches to label strippers, 3D printer parts, curling irons, and safe locks. Its small size and metal gearbox make it a popular choice for DIY RC toys and robotic projects.