Product Documents & Downloads
| Document Description & Details |
Download Link |
| KC-GM12-N20-02981 24V Drawing & Performance Curve (PDF, English, 216 KB) |
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Engineering Overview of the KC-GM12-N20 Series
When designing precision electromechanical systems, engineers require reliable actuation components that deliver consistent output torque and rotational control. The n20 gear motor series engineered by Kechen Motor provides an optimized solution for industrial automation, medical instrumentation, and robotics. Integrating a robust metal spur gear reducer with a brushed DC motor architecture, this n20 motor variant ensures stable mechanical transmission across diverse operating voltages ranging from 3 V to 24 V.
The specialized n20 dc motor configuration features a protective waterproof plastic housing measuring 29 mm by 14.5 mm, safeguarding internal components from environmental moisture and particulate exposure. As a versatile n20 micro gear motor, it supports customizable shaft dimensions, terminal connectors, and encoder integrations such as 3 PPR, 7 PPR, and 12 PPR configurations. Each unit is built to order under strict quality protocols, making it fully compatible with demanding B2B integration requirements where durability and precise positioning are paramount.
General Electrical and Mechanical Specifications
KC-GM12-N20VA baseline technical parameters
| Parameter |
Specification |
| Model Designation |
KC-GM12-N20VA |
| Gearbox Architecture |
Metal spur gear reducer with waterproof plastic housing |
| Rated Voltage Range |
3 V, 5 V, 6 V, 9 V, 12 V, 24 V DC |
| Rated Torque Output |
Max. 1.5 kgf·cm (0.098 to 0.15 N·m) |
| Rated Speed Range |
10 to 2000 rpm |
| Reduction Ratios |
3:1, 10:1, 50:1, 99:1, 145:1, 196:1, 230:1, 238:1, 378:1, 500:1, 760:1, 1000:1, 1200:1 |
| Shaft Configuration |
3 mm D-cut with 0.5 mm flat, M3, M4, or custom options |
| Shaft Diameter |
3 mm or 4 mm |
| Shaft Length |
8 mm to 15 mm custom-made extension |
| Encoder Feedback Options |
3 PPR, 7 PPR, or 12 PPR magnetic encoder |
| Commutation Method |
Brushed DC with carbon brush or graphite brush options |
| Gear Materials |
High-grade steel components |
| Terminal Connector |
2 pin connector with 1.25, 1.5, 2.0, or 2.54 pitch options |
| Unit Weight |
12 g nominal |
Performance Test Data Across Reduction Ratios
Model KC-GM12-N20-07310-12.0V operating at 12.0 V DC
| Reduction Ratio |
Gearbox Length |
No-load Speed |
Rated Speed |
Rated Torque |
Stall Torque |
| 10:1 |
9 mm |
2300 rpm |
2050 rpm |
0.016 kg·cm |
0.147 kg·cm |
| 30:1 |
9 mm |
767 rpm |
683 rpm |
0.042 kg·cm |
0.386 kg·cm |
| 50:1 |
9 mm |
460 rpm |
410 rpm |
0.060 kg·cm |
0.552 kg·cm |
| 100:1 |
9 mm |
230 rpm |
205 rpm |
0.120 kg·cm |
1.104 kg·cm |
| 150:1 |
9 mm |
153 rpm |
137 rpm |
0.150 kg·cm |
1.380 kg·cm |
| 210:1 |
9 mm |
110 rpm |
98 rpm |
0.210 kg·cm |
1.932 kg·cm |
| 250:1 |
9 mm |
92 rpm |
82 rpm |
0.250 kg·cm |
2.300 kg·cm |
| 298:1 |
9 mm |
77 rpm |
69 rpm |
0.298 kg·cm |
2.742 kg·cm |
| 330:1 |
9 mm |
70 rpm |
62 rpm |
0.330 kg·cm |
3.036 kg·cm |
GM12-N20 Outline Dimensions and Technical Drawing
Detailed dimensional specifications for system integration
Engineering Advantages and Performance Integration
- Optimized Torque Delivery: Delivers robust torque output up to 1.5 kgf·cm for demanding mechanical loads
- Durable Gearbox Construction: Utilizes high-grade steel gear components within a protective waterproof plastic housing
- Precise Speed Control: Supports rotational speeds from 10 rpm to 2000 rpm across multiple reduction ratios
- Versatile Electrical Compatibility: Operates efficiently across standard DC voltages from 3 V to 24 V
- Customizable Integration: Adaptable shaft dimensions, terminal connectors, and encoder feedback options tailored to specific B2B project parameters
Associated Industry Tags
n20 gear motor | n20 motor | n20 dc motor | n20 micro gear motor | 12 V DC gear motor | Waterproof plastic housing motor | Metal spur gear reducer | Miniature electromechanical actuator | Custom B2B motor manufacturing
