N20 Motor
12×10mm body. Fits tight spots, runs real loads.
3V, 6V, 12V, 24V. Reduction ratio from 15:1 to 1000:1.
Used in robot wheels, smart locks, peristaltic pumps. We ship to 40+ countries.
Metal gear train for shock loads. Plastic gears for lower noise and budget.
Pre-wired JST/Molex, custom shaft length, IP54. We modify the motor.
Magnetic encoder available.
Kechen Motor – N20 Motor Manufacturer in China
N20 motors combine a miniature DC motor with a precision gear train, delivering reliable torque and controlled speed in a compact form factor. Designed for applications where space is limited but performance cannot be compromised, these gear motors are widely used in smart locks, medical devices, robotics, automotive actuators, and office automation equipment.
Our N20 series features all-metal or metal-plastic hybrid gearbox options, low noise operation, and high efficiency. Voltages from 3V to 24V, no-load speeds from 10 rpm to 1000 rpm, and stall torque up to 3 kg·cm are available. Output shafts can be D-cut, double flat, or custom-machined to your specifications.
N20 Gear Motor Specifications
| Parameter | N20 Gear Motor Series Range (Example) |
|---|---|
| Motor Diameter / Size | 12mm × 10mm × 15mm (housing) |
| Rated Voltage | 3V / 6V / 12V (custom 1.5V–24V available) |
| No‑load Speed (output shaft) | 10 – 1000 rpm |
| Stall Torque | Up to 3 kg·cm (depending on gear ratio) |
| Gear Ratio Options | 10:1, 30:1, 50:1, 100:1, 300:1, 500:1, 1000:1 |
| Gearbox Material | All-metal or plastic-metal hybrid |
| Output Shaft Types | Round, D‑shaft, double flat, spline, custom |
| Optional Features | Encoder mounting, custom shaft length, connectorized cable, EMC filter |
Product Documents & Downloads
| Document Description | File Details |
|---|---|
| KC-N20-07265 3V Drawing & Performance Curve | PDF · English · 218 KB |
| KCGM12-N20-00301 6V Drawing & Performance Curve | PDF · English · 245 KB |
| KC-GM12-N20VA-01711 12V Drawing & Performance Curve | PDF · English · 241 KB |
| KC-GM12-N20-02981 24V Drawing & Performance Curve | PDF · English · 216 KB |
Kechen N20 Motor 3D Design
Key Advantages of Kechen N20 Gear Motor Series
- High torque in a small footprint – Gear ratios from 10:1 to 1000:1 allow you to match output speed and torque precisely to your load requirements.
- Quiet and smooth operation – Precision-molded gears and balanced rotors minimize vibration and acoustic noise, critical for consumer-facing products.
- Long service life – Carbon brush or precious metal brush options; all-metal gear trains for high-cycle applications.
- Flexible customization – Shaft length, shaft shape, wiring harness length and connector type, mounting flange dimensions – we adapt to your PCB or housing design.
- RoHS and REACH compliant – Materials and processes meet international environmental standards.
Typical Applications of N20 Gear Motors
Kechen N20 gear motors are widely used in global markets for:
- Robotics and hobby robots: small robot chassis drive, wheel drive, steering and joint actuators.
- Smart locks and access control: door locks, cabinet locks and safe box locking mechanisms.
- Smart home and office devices: mini curtain openers, small valves, switch actuators.
- Automotive and mobility devices: mirror adjustment, small actuators and model vehicles.
- Medical and laboratory equipment: micro pumps, small positioning and sample handling mechanisms.
Custom N20 Motors – Built to Your Drawing
Standard catalog models are only a starting point. We focus on modifications that actually matter for N20 brushed motor applications:
- Shaft customization – diameter (2.0mm, 2.3mm, or 3.0mm), length, flat surface, or knurled end for press‑fit gears.
- Pre‑soldered connectors – JST or Molex leads ready to plug into your PCB. No crimping or soldering on your assembly line.
- EMI filtering capacitors – directly soldered to the motor terminals to reduce radiated noise and help pass FCC/CE testing.
- IP54 protection – for outdoor or humid environments (dust‑splash resistant, not submersible).
All custom specifications are documented with a dedicated drawing and kept on file for repeat orders – no re‑quoting for the same modification.
Global OEM support – We serve customers in Europe, North America, Asia, and beyond. From prototype to mass production, our engineers provide drawing-based customization, sample verification, and fast response. Contact us for your N20 project.
How to Select the Right Kechen N20 Gear Motor
Choose the Correct Voltage
Select 3V, 6V or 12V N20 gear motor according to your power supply and system design. Battery‑powered devices often use 3V or 6V, while industrial and automotive projects usually prefer 12V for higher efficiency and lower current.
Choose Gear Ratio and Output Speed
For light‑load, higher‑speed applications, choose a lower gear ratio N20 gear motor. For low‑speed, high‑torque applications such as locks or valves, choose a higher gear ratio model. The correct ratio depends on your required torque, target rpm and duty cycle.
Shaft, Mounting and Wiring Options
Kechen offers different N20 gear motor shaft diameters, D‑shaped or round shafts, and customized shaft length for easy mechanical integration. We can also provide customized wire length, connectors and optional encoders to match your controller and assembly assembly process.
Why Partner with Kechen Motor?
When you look for an n20 motor for sale, you are looking for reliability. As a leading manufacturer, Kechen Motor ensures:
- Consistency: Our n20 gearmotors undergo rigorous QC testing for noise, current, and torque consistency.
- Customization: We don’t just sell off-the-shelf parts. We modify the n20 motor gearbox, shaft length, and wiring to match your design.
- Competitive Pricing: We offer a competitive n20 gear motor price without compromising on quality, whether you are buying prototypes or mass-production volumes.
Not sure which Kechen N20 gear motor model is suitable? Send us your voltage, speed, torque and space requirements, and our engineers will recommend a solution within 24 hours.
Frequently Asked Questions (FAQ)
Q: What is the difference between an N20 and a standard DC motor?
A: An n20 dc motor is simply the raw motor. An n20 gear motor includes a reduction gearbox that trades high-speed rotation for significant torque, which is necessary for most real-world applications.
Q: Can I use an N20 motor with an Arduino?
A: Yes. Many hobbyists use an n20 motor driver (like an L298N or TB6612FNG) to control an n20 micro gear motor using an Arduino or similar microcontroller.
Q: What is the life expectancy of an N20 motor?
A: This depends on the load and duty cycle. For high-cycle applications, we recommend our all-metal n20 gearbox and premium carbon brush motors for extended service life.
Q: Do you provide N20 motors with encoders?
A: Absolutely. Our n20 motor encoder line is highly sought after for robotics projects requiring closed-loop speed control.
Q: Can you customize the shaft of the N20 motor?
A: Yes, we specialize in n20 motor customization. Whether you need a specific length, a D-cut, or a lead screw, our engineering team will produce a drawing for your approval.
Ready to Start Your Project?
Don’t settle for generic components. Contact Kechen Motor today to discuss your project requirements, request a technical drawing, or get a quote. Whether you need a single sample or ten thousand units, we are your trusted n20 gear motor manufacturer.
