Open-frame 12mm N20 Spur gear motor

♦ Basic Info:

IND-GM12N20 is an open-frame 12mm N20 spur gear motor, specifically designed for compact OEM mechanical devices such as smart locks, small actuators, printers, and precision instruments. INEED motors offers a variety of reduction ratios and integration options, allowing for the locking of repeatable operating points based on the speed and torque under load, rather than being limited to no-load speed only.

♦ Key Features:

  • 2.5V / 5V / 9V / 12V options for easy integration with common battery packs and motor drivers.
  • The adjustable torque range (50–9000 g·cm) can be customized to match different loads and motion requirements.
  • Customized speed ratios, speeds and torques are provided, along with multiple practical structural options (shaft, cables/connectors, output gears).
  • Designed specifically for intelligent locking mechanisms, suitable for scenarios with high requirements for output repeatability in mass production.
  • Need help choosing specs? See our N20 gear motor guide for selection tips.

Gear Materials & Brush Options (Why Performance Can Differ)

Even with the same size, performance and lifetime can be different due to materials and manufacturing processes. For this Spur gear motor series, INEED Motors can provide:

Steel or brass precision straight‑cut spur gears (choose based on wear, noise, cost targets)
Carbon brush or metal brush options (choose based on lifetime, stability, and duty cycle)
After the sample approval, we can keep production consistent with batch inspection reports, and we can provide a COC upon request.

This product is field-verified by multiple smart-lock customers and has demonstrated stable performance in real applications. Our annual shipment volume reaches 1,000,000 units, with zero customer complaints, zero returns, and no reported quality issues—an important benchmark for OEM buyers who prioritize consistency, traceability, and long-term supply.
Share your target RPM, required torque, available installation space, and wiring/connector preferences, and we will recommend an optimized configuration and provide a fast quotation.

Outline drawing

 

Customizable items: 1. Length and shape (A ); 2. Voltage, output speed, torque, etc. ; 3. Adding connectors, lead wires; 4. Adding gears to shaft; 5. Adding encoder.

 

The basic parameters are for reference

 

Ratio MPN Voltage No Load On Load Stall
Operating                                  Range (V) Rated Voltage(V) Current (mA) Speed                  (rpm) Current (mA) Speed                       (rpm) Torque                    (g.cm) Current (mA) Torque                    (g.cm)
50 IND-12GMN20-50 2.0-3.0 2.5 60 200 85 120 75 500 420
100 IND-12GMN20-100 3.0-8.0 5 40 120 80 72 150 520 1000
298 IND-12GMN20-298 8.0-11.0 9 40 65 80 40 168 650 4100
1000 IND-12GMN20-1000 10.0-14.0 12 40 22 80 11 220 800 9000

Notes: These specs are samples. Please contact us to customize your parameters.

Gearbox sheet

Gear box length/L(mm) Gear Ratios
9.1 1/5 1/10 1/20 1/30 1/50 1/70 1/100
1/110 1/150 1/210 1/250 1/298 1/380 1/500
11 1/1000

 

How to Choose the Reduction Ratio (Quick Guide)

*50:1 – Higher output speed and lighter load
*100:1 – Balanced speed and torque for common mechanical structures
*298:1 – High torque margin, suitable for load variations
*1000:1 – Suitable for applications requiring extremely low speed and high holding torque

Please provide your target load speed, estimated load torque and working cycle. INEED Motors will recommend the best reduction ratio and winding combination for you.

 

 

FAQ for 12mm N20 Spur Gear Motor 

 

Q1. What is the difference between steel gears and brass gears?

A. Steel gears typically provide higher wear resistance and durability under repeated load cycles, while brass gears can be chosen to optimize noise behavior and cost depending on the application. The best choice depends on duty cycle, load spikes, and your noise/life targets.

Q2. How do I choose 50:1 vs 100:1 vs 298:1 vs 1000:1?

A. There is a trade-off relationship between speed and torque. A higher transmission ratio will reduce the output speed, while increasing the available output torque and maintaining margin. Start from the required load speed, and then select a transmission ratio that can provide sufficient torque margin and does not frequently approach stall.

Q3. Can you provide batch inspection reports and COC for production orders?

A. Yes. INEED Motors can provide batch inspection reports for production lots. We can also provide a Certificate of Conformance (COC) upon request—please confirm your required format and quality items when placing the order.

 

Motor Customization Guide

Please provide your detailed requirements, and our engineers will offer you the optimal solution tailored to your specific application.

Contact Us

You need our support, and we are ready to provide assistance.

Motor products pose complexities in understanding, specifying, and integrating, with no industry standards. We offer expertise to mitigate design, manufacturing, and supply risks.

Contact our team now.

You can easily upload your 2D/3D CAD design files, and our sales engineering team will provide you with a quote within 8 hours.

Motors Catalog Download

Download and view the full series catalog for free

Contact Us

You need our support, and we are ready to provide assistance.

You can easily upload your 2D/3D CAD design files, and our sales engineering team will provide you with a quote within 24 hours.

Contact Us

You need our support, and we are ready to provide assistance.

Motor products pose complexities in understanding, specifying, and integrating, with no industry standards. We offer expertise to mitigate design, manufacturing, and supply risks.

Contact our team now.

You can easily upload your 2D/3D CAD design files, and our sales engineering team will provide you with a quote within 24 hours.