12vDC geared stepper motor PM25 Micro gearbox motor

Short Description:

Model No. : SM25-048S-193/10

Motor type: Permanent Magnet geared stepper motor
Driving voltage: 12 V DC
Step angle: 7.5 degree
No. of phases: 4 phases
Coil resistance: 100Ω±10%
Current / Phase: 120mA
Diameter Diameter
gear ratio: 1:10 1:30 1:50 1:100 standard

Product Detail

Product Tags


This motor is a 25 mm diameter motor with a height of 25 mm. The basic step angle of the motor is 7.5 degrees. After the reducer decelerates, the step angle resolution can reach 0.075~0.75 degrees, which can achieve accurate position control and other functions.
Product standard gear reduction ratio: 1:10 1:15 1:20 1:30 1:30 1:60 1:75 1:100
On the basis of matching reducer with stepping motor, the stepping motor adopts an external reducer with built-in structure and metal gears, which are easy to transmit greater torque
This product is mainly used for toilet valve, camera, PTZ and other occasions.

图片 1


Model No. SM25-048S-193/10
Current Per Phase 120 mA/Phase
Winding Resitance 100±10% Ω at (25℃)
Rated voltage 12 V DC
No. of phases 4 phases
Step Angle 7.5°/10
Max Pull-in Rate 500PPS
Holding Torque 1000 g.cm
Pull-in Torque at 100pps 400 g.cm
Winding temperature at 900pps ≤65K

Design Drawing

pro 2

Example of the same type of motor

图片 3

About geared stepper motors

The gear box has high precision, high efficiency and low noise, which makes the product have good reliability.
The power input position of the stepper motor can be in the form of FPC, FFC, PCB cable, etc.
The output shaft of the motor can adopt various output structures, such as circular shaft, D-shaft and wire bar.

Typical Applications

* Saliva Analyzer
* Blood Analyzer
* Welding Machine
* Intelligent Security Products
* Fiber Fusion Splicer
* Digital Electronics

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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