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| Model | SM08133 |
| Brand | Vic-Tech |
| Motor type | 8mm micro stepper motor |
| Driving Voltage | 3.3 V DC |
| Coil resistance | 20Ω±10% ohm/phase(20℃） |
| Step angle | 18 |
| Minimum order quantity | 1 unit |
| Certification | Rohs |
A stepper motor is a motor that converts electrical pulse signals into corresponding angular
displacement or linear displacement. They have multiple coils that are organized in groups called
“phases”. By energizing each phase in sequence, the motor will rotate, one step at a time.
With a driver controlled stepping you can achieve very precise positioning and speed control. For
this reason, stepper motors are the motor of choice for many precision motion control applications.
| Model No. | SM08133 |
| Driving voltage | 3.3V DC |
| Coil resistance | 40Ω±7%/phase |
| No. of phase | 2-2 phases |
| Step angle | 18°/step |
| Max.starting frequency | 1000pps min.(AT 3.3V DC) |
| Max.slewing frequency | 1200pps min.(AT 3.3V DC) |
| Pull in torque | 0.8g min(AT 3.3V 900PPS) |
| Pull out torque | 1.0g min(AT 3.3V 900PPS) |
| Drive mode | Bipolar drive |
| Insulation class | Class e for coils |
| Insulation strength | 100v ac for one second |
| Insulation resistance | 1 MΩ（DC 100V） |
| Operating temperature range | -0~+55℃ |
8mm Micro Stepper Motor Design Drawing:
8mm Micro Stepper Motor Torque Diagram:
Example of the same type：
Motor’s diameter: We have 6mm, 8mm, 10mm, 15mm and 20 mm diameter motor
Connection method and direction：FPC，PCB
Cap：Round, square, binaural, other shapes can be customised
Outgoing shaft type:Round shaft, D-axis, screws
Shaft gear：Can be customised on request
Stepper motor gearboxes：Worm gearboxes, horizontal gearboxes, 12GB gearboxes, also customised stepper motor gearboxes on request
Reduction gearbox outlet shaft type: D-axis, screw
Gearbox Gear Ratio Specifications：Gearbox Parameters
| Gear ratio | 2:1 | 5:1 | 10:1 | 15:1 | 20:1 | 30:1 | 36:1 | 50: | 63:1 | 67:1 | 89:1 | 100:1 |
| Precise ratio | 2.002 | 4.995 | 9.677 | 14.754 | 20.501 | 29.120 | 36.122 | 51.103 | 63.071 | 66.801 | 89.227 | 99.002 |
| Gear ratio | 23 | 20 | 13 | 18 | 15 | 12 | 20 | 20 | 14 | 17 | 14 | 13 |
| Gear levels | 2 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 |
| Efficiency | 80% | 80% | 80% | 72% | 72% | 72% | 65% | 65% | 65% | 65% | 65% | 65% |
| Input and output directions | + | + | + | – | – | – | + | + | + | + | + | + |
| Gear ratio | 120:1 | 150:1 | 172:1 | 210:1 | 250:1 | 275:1 | 298:1 | 380:1 | 420:1 | 500:1 | 600:1 | 1000:1 |
| Precise ratio | 118.922 | 150.948 | 171.883 | 210.591 | 250.111 | 274.403 | 297.924 | 387:689 | 421.296 | 506.155 | 599.394 | 986.406 |
| Gear ratio | 17 | 18 | 13 | 12(15) | 13 | 12 | 12 | 12 | 12 | 18 | 16 | 12 |
| Gear levels | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 7 | 7 | 7 |
| Efficiency | 59% | 59% | 59% | 59% | 59% | 59% | 59% | 59% | 59% | 47% | 47% | 47% |
| Input and output directions | – | – | – | – | – | – | – | – | – | – | – | – |
Geared stepper motors or micro stepper motor + dust jacket：
10mm micro stepper motor with gearbox and encoder：
10mm micro stepper motor with resistor：
About micro stepper motor:
Our micro stepper motors generally have 18 degrees step angle.(full step driving)
That means it takes 20 steps to rotate one turn.
Motor’s step angle is related to internal stator’s design.
Stepper motor is speed is determined by driving frequency, and it has nothing to do with load (unless it’s losing steps).
Due to high precision speed control of stepper motors, with a driver controlled stepping you can achieve very precise positioning and speed control. For this reason, stepper motors are the motor of choice for many precision motion control applications.
We have micro stepper motors with different diameters, and motor’s torque is related to its size.
Here is relationship between motor’s diameter and torque(with suitable running frequency, at rated voltage):
6mm motor: About 1 g*cm
8mm motor: About 3g*cm
10mm motor: About 5 g*cm
15mm motor: About 15 g*cm
20mm motor: About 40 g*cm
Due to the excellent characteristics of small size, high precision and easy control, this miniature stepper motor is widely used in cameras, optical instruments, lenses, precision medical equipment, office automation, smart home equipment, adult products and other fields.
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
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)
Yes, we are a manufacture, and we produces mainly stepper motors.
Our factory is located in Changzhou, Jiangsu. Yes, you are very welcome to visit us.
No, we don’t provide free samples. Customers won’t treat free samples fairly.
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.
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.
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.
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