• Changzhou Vic-Tech Motor Technology Co., Ltd.
    Andres Blanco
    The thruster have arrived correctly. I tested them on the ROV and we are very happy with the result. The epoxy interior finish is very good and the power of the motors in relation to the size is quite good.
  • Changzhou Vic-Tech Motor Technology Co., Ltd.
    Gregoire Lange
    The cooperation between Changzhou Vic-Tech Motor Tech and our company was just great. Good understanding of our needs, great willing to solve our problems. I recommend !
  • Changzhou Vic-Tech Motor Technology Co., Ltd.
    David Molevelt
    Professional and clear communication. Order was shipped in time. Counter connectors where added to the shipment. Driver works like we agreed !
  • Changzhou Vic-Tech Motor Technology Co., Ltd.
    Buildstorm Private Limited
    The product works as expected, it was packed nicely. Seller responds very quickly and helps in making a buying decision. They are ready to customize the product for you.
  • Changzhou Vic-Tech Motor Technology Co., Ltd.
    Ashley Griffin
    Shipment was received very quickly. Product was well protected by packaging. Company rep was cordial and kind. A Plus rating!
Contact Person : Kangtai Lee
Phone Number : +86 17715451401
Whatsapp : +8617715451401

5VDC 8mm Length Output Worm Shaft Gearbox With 15mm Diameter PM Stepper Motor

Place of Origin China
Brand Name VIC-TECH
Certification RoHS
Model Number SM15-1812
Minimum Order Quantity 1Unit
Price $3.5~$7/Unit
Packaging Details The product is packed with pearl cotton, and the outside is in a carton.
Delivery Time 10~30 days after receiving sample payment
Payment Terms MoneyGram, Western Union,Credit Card,T/T, L/C
Supply Ability 100000\ Units/year

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
Motor Type 15mm Motor+worm Gearbox Motor Diameter 15mm
Gear Ratio 21:1 To 1030:1 Motor Resistance 10Ω/31Ω
Rated Voltage 5V Step Angle 18°/gear Ratio
High Light

5VDC Worm Shaft Gearbox


8mm Length Worm Shaft Gearbox


15mm Diameter PM Stepper Motor

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Product Description

5V DC 8mm length output shaft worm gearbox with 15mm diameter PM stepper motor



This is a 15mm motor attached with a worm gearbox.

We have different gear ratios on gearbox.

Also motor’s coil resistance/cable length/cable color is customizable.


About worm gear, it has low efficiency and self lock function.

Low efficiency: Efficiency of a worm shaft is only about 34%

Self lock function: motor’s shaft is completely lock when power is off. This function is very useful in some case.



Motor type PM stepper motor
Model No. SM15-1812
Motor diameter 15mm
Gearbox type Worm gearbox
Resistance 10Ω/31Ω
Rated voltage 5V DC
Step angle 18°/gear ratio
Possible gear ratio



Excitation mode 2-2 phase exitation


Design drawing:

5VDC 8mm Length Output Worm Shaft Gearbox With 15mm Diameter PM Stepper Motor 0


Product display:

5VDC 8mm Length Output Worm Shaft Gearbox With 15mm Diameter PM Stepper Motor 1




Application of stepper motors:

Stepper motors are used for precise control, widely used on medical equipment, 3D printer, industrial precise control, automation equipment, etc.

Stepper motors can be used in any mechanisms requirement precise conrtol and rotational/linear movement.

5VDC 8mm Length Output Worm Shaft Gearbox With 15mm Diameter PM Stepper Motor 2


Advantage of stepper motors:

Stepper motor can reach precise control even without close-loop encoders / without feed back system, also they do not have electrical brushed. Thus there is no electromagnetic interference and electrical sparks issues. In some cases, they can replace DC brushed motors/ brushless motors.

Stepper motors are easy to control with drivers, and this feature establish its important position in the field of precise control.

1. Precise control achievable, programmable

2. Without electromagnetic interference & electrical sparks

3. Small size

4. Reasonable price

5. Low noise

6. Long service life