• Changzhou Hetai Motor And Electric Appliance Co., Ltd.
    Rod S****
    I purchased the 3-pack of the smaller steppers for my current ender 3 pro project. For my applications, they work perfectly. It's a great deal for quality motors, and I'm going to purchase another 10 packs.
  • Changzhou Hetai Motor And Electric Appliance Co., Ltd.
    Sam N***
    These are great motors and they are very strong. They are operating quietly, and also need them to release their hold every time a move is complete.
  • Changzhou Hetai Motor And Electric Appliance Co., Ltd.
    Jim S**
    Please develop more low noise gearbox and with better prices, so we can sell your products to more clients and gain larger markets. Thank you.
Contact Person : Nora
Whatsapp : +8618661153149

Micro Gearbox Stepper Motor 28mm 600 G Cm 0.05 nm 1.8 Degree 4.22 V 0.67A

Place of Origin China
Brand Name HeTai
Certification CE ROHS ISO
Model Number 28BYGH102-39AG6
Minimum Order Quantity 50
Price USD
Packaging Details Carton with Inner Foam Box, Pallet
Delivery Time 25 DAYS
Payment Terms L/C, D/P, T/T, Western Union, MoneyGram
Supply Ability 10000 PCS/MONTH

Contact me for free samples and coupons.

Whatsapp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

Product Details
Product Name Stepping Gearbox Motor RATED VOLTAGE 4.22 V
Dielectric Strength 500VAC 1 Minute Step Accuracy ± 5%
Temperature Rise 80 ℃ Max Insulation Resistance 100MΩ Min.500VC DC
Ambient Temperature -20℃~+50℃ Radial Load(10mm From Flange) ≤80N
Shaft Axial Load ≤30N HOLDING TORQUE 600g.cm
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micro stepper motor with gearbox 0.05 nm


Stepper Motor 600 G Cm 0.05 nm


small stepper motor with gearbox 0.05 nm

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Product Description

28BYGH102-39AG6 micro-compact in space 1.8 degree 0.67A low noise step gearbox motor

Model Size Weight(g) Phase Current/phase Voltage Step Angle Accuracy
28BYGH102-39AG6 28*28*60.5 mm 215 2 0.67 3.9 ±5%
28BYGH507-02AG6 28*28*79.8 mm 305 2 2 5.4 ±5%


A planetary gearbox, also known as an epicyclic gearbox, is one of the most important types of gearboxes available in the motion control territory. They are often used as an important part of automatic transmissions.
Electrical Specification




*Products can be customized by special request.

Wiring Diagram

Micro Gearbox Stepper Motor 28mm 600 G Cm  0.05 nm 1.8 Degree 4.22 V 0.67A 0

Mechanical Dimension

Micro Gearbox Stepper Motor 28mm 600 G Cm  0.05 nm 1.8 Degree 4.22 V 0.67A 1

GEARBOX PART Electrical Specification:

Out diameter 28mm


Housing material Bearing at output Radial load(10mm from flange)N Shaft axial load(N) Shaft press-fit force max(N) Radial play of shaft(mm) Thrust play of shaft(mm) Backlash at no-load (°)
Powder metallurgy sleeve bearing ≤80 ≤30 ≤200 ≤0.03 ≤0.4 ≤1.5


Reduction ratio Rated tolerance torque (Nm) Max momentary tolerance torque (Nm) Efficiency% Length (mm) Weight(g) Number of gear trains
1/3 0.2 0.6 81% 28.5 105 1


Mechanical Dimension

Micro Gearbox Stepper Motor 28mm 600 G Cm  0.05 nm 1.8 Degree 4.22 V 0.67A 2


1. Are you a factory?

Yes, we are a factory. Our brand name Hetai is a well-known micro motor manufacturer for more than 20 years in

China. Main products including hybrid stepper motor, brushless DC motor, servo motor, and planetary gearbox.


2. Can I test the sample?

Yes, samples and freight are charged.


3. Can I get a Customized product?

Sure, all the products can be customized based on special requests.


4. How do you ship the goods?

We normally ship goods by express(DHL/UPS/FEDEX/TNT), by sea and by air, also accept freight forwarder.


5. What are the payment terms?

T/T(bank transfer), Paypal(0.5% paypal charges), ALIBABA assurance order accept


6. Is this your final price? May I have the discount?

Our price is the factory price. If you have a large quantity, we can negotiate about the discount.


7. What is the Warranty for your products?

Our warranty is for one year. If any quality problems occurred on our side during this period, we will take on the shipping cost and replacement. please note damage caused by improper use of the product is not covered by the warranty.