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Standard & Custom N20 Micro DC Spur Gear Motors: Compact Power for Smart Devices & Robotics

Standard & Custom N20 Micro DC Spur Gear Motors: Compact Power for Smart Devices & Robotics

2026-09-10

https://mao.ecer.com/test/masingmotor.com/sale-51582438-geared-brushed-motor-reducer-gearbox-12mm-n20-n30-dc-motor-for-locks-and-robots.htmlMeta Description: Looking for a reliable 12mm N20 micro DC gear motor supplier, Explore high-torque 6V & 12V N20 spur gear motors designed for smart locks, medical devices, and robotics. Custom engineering available.

Introduction: Big Performance in a Micro Footprint

In the era of dynamic miniaturization, design engineers across Europe and North America face a continuous challenge: How do you deliver precise, high-torque motion in tight mechanical spaces?

Whether you are designing next-generation smart home security, medical auto-injectors, or autonomous service robots, power density is key. Enter the MS-GM12-N20 Micro DC Spur Gear Motor series — a compact, highly efficient, and ultra-reliable precision motion solution optimized for modern industrial and commercial applications.

Key Technical Specifications at a Glance

The MS-GM12-N20 series integrates a high-efficiency DC motor with a precision-machined 12mm spur gearbox, offering exceptional torque-to-size ratio, low noise, and stable current draw.

Below is the performance data for our standard models (6V & 12V configurations):

Technical Parameter Model 1: MS-GN20-06360A-50 Model 2: MS-GN20-1000-0605
Rated Voltage 12V DC 6V DC
No-Load Speed 320 RPM ± 10% 5 RPM ± 10%
No-Load Current ≤0.04A ≤0.02A
On-Load Speed 280 RPM ± 10% 4 RPM ± 10%
On-Load Current ≤0.12A ≤0.05A
On-Load Torque 9.8mN.m 107.8mN.m
Stall Torque ≥68.6mN.m ≥323.4mN.m
Stall Current ≤0.46A ≤0.12A
Max Efficiency 41.84% 36.62%
Rotation Direction CW / CCW CW / CCW
Shaft Diameter φ3 φ3
Dimensions 24*12*10mm 24*12*10mm

Note: Full performance curves (Torque vs. Speed, Current, and Efficiency) are available in our downloadable datasheets.

Mechanical Dimensions & Form Factor

  • Motor Body Length: 24mm 

  • Cross-Section: 12*10mm

  • Shaft Length: 4mm

  • Shaft Profile:φ3*D2

The standard mounting holes and compact rectangular cross-section ensure seamless integration into existing $12\text{mm}$ motor housings without requiring expensive tool redesigns.

Key Applications: Where Precision Meets Reliability

The versatility of the N20 micro gearhead motor makes it an essential component across diverse industries throughout Western markets:

  1. Smart Lock & Access Control Systems:

    • Applications: Fingerprint locks, Bluetooth door handles, express parcel lockers, shared bicycle locks, parking space barriers, and EV charging gun locking mechanisms.

    • Why N20? Delivers instantaneous high stall torque to actuate locking bolts reliably under low power consumption.

  2. Smart Home & Consumer Electronics:

    • Applications: Automated air switches, 3D printing pens, smart kitchen appliances, motorized window blinds.

  3. Medical & Healthcare Automation:

    • Applications: Smart syringe pumps, medical dosage delivery devices, automated diagnostic tools.

    • Why N20? Predictable, step-free rotational accuracy and minimal electrical noise.

  4. Robotics & Industrial Automation:

    • Applications: Service robots, sweeping/vacuum robots, educational STEM robotics, dexterous robotic hands, and mechanical grippers.

Tailored Engineering: Custom OEM/ODM Capabilities

We understand that standard off-the-shelf motors don't always fit unique engineering constraints. As an experienced motor designer and manufacturer, we offer complete non-standard custom modifications:

  • Custom Shaft Modifications: D-shaft lengths, knurling, cross-drilled holes, or threaded lead screws.

  • Voltage & Speed Tuning: Custom windings for $3\text{V}$, $6\text{V}$, $9\text{V}$, or $12\text{V}$ operation targeting specific output RPM.

  • Gear Ratios: Tailored gear reduction ratios to maximize torque output or high-speed response.

  • Connectors & Cable Assemblies: Pre-wired terminal leads, JST/Molex connectors, and integrated PCB mounting options.

Why Partner With Us?

  • Strict Quality Control: Every batch undergoes dynamic performance testing, power consumption checks, and torque margin testing.

  • Fast Sample Turnaround: Rapid prototyping to support your design iteration cycles.

  • Global Supply Chain Support: Full compliance with Western export standards (RoHS, CE) with reliable lead times.