• 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

High precision 57HS51 57mm NEMA 23 hybrid stepper motor with optical encoder 500 PPR resolution

Place of Origin Jiangsu, China (Mainland)
Brand Name VIC-TECH
Certification RoHS
Model Number 57HS51-EN
Minimum Order Quantity 1 Unit
Price $25 - $45 / Units
Packaging Details Standard export package, or can be customized
Delivery Time 15-30 work days
Payment Terms T/T, Western Union, MoneyGram
Supply Ability 10000 Units per month

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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 Hybrid Stepper Motor Motor Size 57mm (NEMA23)
Current 1~4 A/phase Encoder Type Optical Encoder
Encoder Resolution 500 PPR Step Angle 1.8°/step
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Product Description

High precision 57HS51 57mm NEMA 23 hybrid stepper motor with optical encoder 500 PPR resolution

This is 57mm hybrid stepper motor with optical encoder at the bottom.

57mm hybrid stepper motor is 1.8° step angle, also known as NEMA 23 motor.

This motor is widely used for high precision control.

In order to reach closed-loop, for higher precision control. An encoder is required to provide feedback signal.

The encoder used is optical encoder, and we have different resolution including 500, 1000, 2000 PPR and more.

The encoder contains three channels: including signal A, signal B and signal Index.


The motor’s size is 57mm, and we have different height for option.

With bigger height, motor has bigger torque, bigger weight and higher cost.

Please confirm motor and encoder parameters before confirm order.


Mechanical Dimension:MM


High precision 57HS51 57mm NEMA 23 hybrid stepper motor with optical encoder 500 PPR resolution 0

Typical Applications

  • 3D Printer
  • Monitoring Equipment
  • Medical Machinery
  • Vending Machine
  • Engineering Vehicle
  • CNC Engraving Machine
  • ATM Machine

Motor parameters:

Step Angle


Motor length


Holding torque









No. of


Rotational inertia




0.9 41 3.9 1 5.7 8 6 120 0.45
1.8 41 3.9 2 1.4 1.4 8 150 0.47
0.9 51 7.2 2 1.6 2.2 6 280 0.59
1.8 51 9 2 1.8 2.7 8 230 0.59
0.9 56 12 2.8 0.9 3.3 4 300 0.7
1.8 56 9 2 1.8 2.5 6 280 0.68
0.9 76 18 2.8 1.15 5.6 4 480 1
1.8 76 13.5 3 1 1.6 6 440 1.1
1.8 100 30 4.2 0.75 3 4 700 1.3
1.8 112 31 4.2 0.9 3.8 4 800 1.4


Encoder parameters:

Encoder type Optical encoder
Resolution 100/200/500/1000/1024/2000/2500PPR
Output signal Signal A, B, Index
Power supply 5V DC
Max response frequency 100 kHz
Max rotation speed 3000 RPM



Torque Curve For ReferenceThe above products are only representative models, we can customize the products according to customer requirements. Includes the length and diameter of the shaft.Our company can also provide OEM services.

Product Detail Presentation

High precision 57HS51 57mm NEMA 23 hybrid stepper motor with optical encoder 500 PPR resolution 1



About hybrid stepper motor:

Hybrid stepper motors are in general square shape, and a stepper motor can be identified by its unique outer shape.

A hybrid stepper motor has 1.8°step angle(200 step/revolution) or 0.9°step angle (400 steps/revolution). Step angle is determined by tooth number on rotor’s laminations.

There are to ways to name a hybrid stepper motor:

By Metric unit (unit: mm) or by Imperial unit (unit: inch)

For example, a 42mm motor = a 1.7 inch stepper motor.

So a 42mm motor can also be called as NEMA 17 motor.

Explanation of hybrid stepper motor’s name:

For example, 42HS40 stepper motor:

42 means the size is 42mm, so it’s a NEMA17 motor.

HS means Hybrid Stepper motor.

40 means the height is 40mm motor.

We have different height for customers to choose, with bigger height, a motor will have higher torque, bigger weight, and higher price.

Here is internal structure of a regular hybrid stepper motor.


Application of Hybrid stepper motor:

Due to high resolution of hybrid stepper motor’s (200 or 400 steps per revolution), they are widely used for applications requiring high precision, such as:

3D printing

Industrial control(CNC, automatic milling machine, textile machinery)

Computer peripherals

Packing machine

And other automatic systems requiring high precision control.