N20 DC brushed motor with 1024 gearbox, output shaft can be customised

Short Description:

Model No.: N20-1024GB

Motor type N20 motor with gearbox
Driving voltage 5V DC
No-load speed 15000RPM
Run directio CW/CCW
Minimum order quantity 1 piece

Product Detail

Product Tags


This is an N20 DC motor with a 1024 gearbox.
The N20 DC motor is also a brushed DC motor with a no-load speed of approximately 15,000 RPM for a single motor.
When the motor is connected to a gearbox, it runs slower and with more torque.
The output shaft of this motor is a D-shaft and the customer can also choose a threaded shaft, if required.
Gearboxes are available in the following gear ratios: 10:1,30:1,50:1,100:1,150:1,300:1,323:1,483:1,500:1,668:1,945:1,1000:1, the customer can choose the gear ratio according to his needs.
When the gear ratio is less than 600:1, the gearbox height can be adjusted to 6 mm (short version).
The output can be a D-shaft with a diameter of 3mm*D2.5mm, or an M3 leadscrew, or other customised shaft type.


Model No. N20-1024GB
Driving voltage 5V DC
Resistance 25Ω
Inductance 4 mH
No-load speed 9000RPM
Reduction ratio 298:1
No-load output speed 25RPM
No-load current <60mA
Output torque 800g.cm
Run direction CW/CCW

Design Drawing

图片 1

About DC brushed motors

图片 2

DC brushed motors are the most commonly used motors on the market.
DC motors have brushes inside, l positive and negative poles (+ and -).
The speed of the DC motor can be controlled with different gear ratios or with PWM (pulse width modulation)
By means of a torque boost from the gearbox, the DC motor can achieve higher torques than the original torque of the motor.
It can also be installed in the following positions according to customer requirements:
1024GB Series + N20 DC motor

N20 motor performance curve (12V 16000 no-load speed version)

图片 3

N20 works on the following principles

图片 4

Gearbox Parameters

Gear ratio 10:1 16:1 20:1 30:1 35:1 39:1 50:1 66:1
Precise ratio 9.952 15.955 20.622 29.806 35.337 38.889 49.778 66.311
Tooth mumber 14 20 18 14 18 18 15 18
Gear levels 2 4 4 3 4 4 4 4
Efficiency 80% 64% 64% 71% 64% 64% 64% 64%
Gear ratio 87:1 102:1 153:1 169:1 210:1 243:1 297:1 350:1
Precise ratio 87.303 101.821 153.125 169.383 209.402 243.158 297.071 347.972
Tooth mumber 15 14 16 15 19 15 15 14
Gear levels 4 4 5 5 5 5 5 5
Efficiency 64% 64% 58% 58% 58% 58% 58% 58%


Medical devices, robotics field, smart home, automotive drive, aircraft, consumer electronics, industrial automation, optical instruments and equipment field, etc.

Advantages of DC brushed motors

1. cheaper (compared to stepper motors)
2. Smaller size
3. Direct connection, easy to use
4. Wide range of use
5. Fast speed of rotation
6. Higher efficiency (compared with stepper motors)

Customization service

Out of the shaft length (the tail can be out of the shaft matching encoder),
The voltage,
The rotational speed,
Outlet mode,
And connectors and so on

Lead time and packaging information

Lead time for samples:
Standard motors in stock: within 3 days
Standard motors not in stock: within 15 days
Customized products: About 25~30 days (based on complexity of customization)
Lead time for building a new mold: generally about 45 days
Lead time for mass production: based on order quantity

Samples are packed in foam sponge with a paper box, shipped by express
Mass production, motors are packed in corrugated cartons with transparent film outside. (shipping by air)
If shipped by sea, product will be packed on pallets


Shipping Method

On samples and air shipping, we use Fedex/TNT/UPS/DHL. (5~12 days for express service)
For sea shipping, we use our shipping agent, and ship from Shanghai port. (45~70 days for sea shipping)


1.Are you a manufacturer?
Yes, we are a manufacture, and we produces mainly stepper motors.

2.Where is your factory location? Can we visit your factory?
Our factory is located in Changzhou, Jiangsu. Yes, you are very welcome to visit us.

3.Can you provide free samples?
No, we don’t provide free samples. Customers won’t treat free samples fairly.

4.Who pays for shipping cost? Can I use my shipping account?
Customers pay for shipping cost. We will quote you shipping cost.
If you think you have cheaper/more convenient shipping method, we can use you shipping account.

5.What’s you MOQ? Can I order one motor?
We don’t have MOQ, and you can order only one piece sample.
But we recommend you to order a little bit more, just in case the motor is damaged during your testing, and you can have a back-up.

6.We are developing a new project, do you provide customization service? Can we sign a NDA contract?
We have over 20 years of experience in stepper motor industry.
We have developed many projects,  we can provide full set customization from design drawing to production.
We are confident we can give you few advice/suggestions for your stepper motor project.
If you are worrying about confidential issues, yes, we can sign a NDA contract.

7.Do you sell drivers? Do you produce them?
Yes, we do sell drivers. They are only suitable for temporary sample test, not suitable for mass production.
We do not produce drivers, we only produce stepper motors

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