1.8 Degree 57mm Nema 23 Hybrid Stepper Motor

Basic Information
Place of Origin: China
Brand Name: prostepper
Certification: CE/ISO/ROHS
Model Number: PST57H251-4P20
Minimum Order Quantity: 10pcs
Price: USD8.8-USD13.8/pcs
Packaging Details: 38.5*24*23 cm
Delivery Time: 5-8 working days
Payment Terms: T/T, Western Union, L/C, MoneyGram
Supply Ability: 250000pcs per month
Name: Nema23 Stepper Motor Step Angle: 1.8 Degree
Holding Torque: 1 N.m Related Current: 2A/Phase
Weight: 0.64kg Length: 51.5mm
High Light:

Nema 23 Hybrid Stepper Motor


57mm Hybrid Stepper Motor


57mm 2 phase stepper motor

1.8 degree 57mm two phase black hybrid stepper motor for Packaging machine



57mm series stepper motor is our most popular selling products, the output is very big, most customer like to choose prostepper brand. 


We have motor size:  NEMA8, NEMA11. NEMA14, NEMA17, NEMA23, NEMA34
Step angle: 1.8 degree, 0.9 degree or 1.2 degree.

The kinds of shaft is divided into Single shaft and double shaft,

So you can choose according to your different requirements



Prostepper brand motor always have own calling system as below:

·1.8 Degree 57mm Nema 23 Hybrid Stepper Motor 0



1.8 Degree 57mm Nema 23 Hybrid Stepper Motor 1


The product detailed specification of 2 phase 57mm hybrid stepper motor can be refered as below:


Mode No PST57H242-4P10




Holding Torque 0.6N.m
Related Current 1A/Phase 2A/Phase 3A/Phase
Resistance 4.2 Ω/Phase 1.2Ω /Phase 0.51Ω/Phase
Inductance 8.9MH/Phase 2.1MH/Phase 1MH/Phase
Inertia 140g.cm2
Weight 0.46kgs
Length 42.5mm
Connection P


Mode No PST57H245-4P10




Holding Torque 0.8N.m
Related Current 1A/Phase 2A/Phase 3A/Phase
Resistance 4.7 Ω/Phase 1.25Ω /Phase 0.57Ω/Phase
Inductance 10.8MH/Phase 2.7MH/Phase 1.2MH/Phase
Inertia 180g.cm2
Weight 0.52kgs
Length 45.5mm
Connection P


Mode No PST57H251-4P10




Holding Torque 0.8N.m
Related Current 1A/Phase 2A/Phase 3A/Phase
Resistance 4.7 Ω/Phase 1.25Ω /Phase 0.57Ω/Phase
Inductance 10.8MH/Phase 2.7MH/Phase 1.2MH/Phase
Inertia 180g.cm2
Weight 0.52kgs
Length 45.5mm
Connection P


Mode No PST57H255-4P20




Holding Torque 1.2N.m
Related Current 2A/Phase 3A/Phase 4A/Phase
Resistance 1.6 Ω/Phase 0.7Ω /Phase 0.45Ω/Phase
Inductance 5.2MH/Phase 2.4MH/Phase 1.4MH/Phase
Inertia 280g.cm2
Weight 0.72kgs
Length 55.5mm
Connection P


Mode No PST57H265-4P20




Holding Torque 1.7N.m
Related Current 2A/Phase 3A/Phase 4A/Phase
Resistance 2 Ω/Phase 0.9Ω /Phase 0.5Ω/Phase
Inductance 6MH/Phase 2.7MH/Phase 1.6MH/Phase
Inertia 280g.cm2
Weight 0.72kgs
Length 55.5mm
Connection P


Mode No PST57H276-4P30




Holding Torque 2N.m
Related Current 3A/Phase 4A/Phase 5A/Phase
Resistance 1.1Ω/Phase 0.65Ω /Phase 0.37Ω/Phase
Inductance 4.2MH/Phase 2.35MH/Phase 1.8MH/Phase
Inertia 480g.cm2
Weight 1.1kgs
Length 76.5mm
Connection P                                               L


Mode No PST57H280-4P30



Holding Torque 2.2N.m
Related Current 3A/Phase 4A/Phase 5A/Phase
Resistance 1.2Ω/Phase 0.65Ω /Phase 0.36Ω/Phase
Inductance 4.5MH/Phase 2.5MH/Phase 1.76MH/Phase
Inertia 520g.cm2
Weight 1.2kgs
Length 80.5mm
Connection P L


Mode No PST57H2100-4L40



Holding Torque 3N.m
Related Current A/Phase 5A/Phase
Resistance 0.88Ω/Phase 0.5Ω /Phase
Inductance 3.2MH/Phase 2.MH/Phase
Inertia 720
Weight 1.5
Length 101
Connection L

1.8 Degree 57mm Nema 23 Hybrid Stepper Motor 2

This out line shows a dual-shaft motor. The single-shaft motor does not have the blue part shaft and the * mark hole demensions.

Model    L
PST57H242 42.5mm
PST57H245 45.5mm
PST57H251 51.5mm
PST57H255 55.5mm
PST57H265 64.5mm
PST57H276 76.5mm
PST57H280 80.5mm
PST57H2100 101mm


Speed/Torque Characteristics (Reference Value)

1.8 Degree 57mm Nema 23 Hybrid Stepper Motor 3


How does a stepper motor work?

Every revolution of the stepper motor is divided into a discrete number of steps, in many cases 200 steps, and the motor must be sent a separate pulse for each step. The stepper motor can only take one step at a time and each step is the same size.

Since each pulse causes the motor to rotate a precise angle, typically 1.8°, the motor's position can be controlled without any feedback mechanism. As the digital pulses increase in frequency, the step movement changes into continuous rotation, with the speed of rotation directly proportional to the frequency of the pulses.

Prostepper's stepper motors are used every day in both industrial and commercial applications because of their low cost, high reliability, high torque at low speeds and a simple, rugged construction that operates in almost any environment.



Our company takes great importance of each parts of the stepper motors for all the process:

  1  Raw material-Famous brand in CHina or aboard  Control the quality of raw material
  2  Spare parts-checked by QA and QC person, Training the operation workers  Control the production process
  3  Design- High performance optimized in electromagnetic circuit

 Increasing the torque of motor

 Lower the rising the range of temperature on the motor

Promote the running stable

  4   Accurate position control  The angle accuracy can be controlled within ±0.09°
  5 Forward / reverse rotation, emergency stop and lock function  Maintain a certain torque output
  6  Long life, more than 5000hours  Stepper motor life usually determined by the life of the bearing. We have good quality bearing, and all inspection


The applications of our stepper motors 

· 3D Printing

· Flight Control Systems
   Agricultural Automation

          Material Handling – Conveyor, Diverter, Robotics, AGV

·         Metalworking – EDM, Waterjet, Laser, Wire Feed Welding

·         Food and Beverage – Filling, Valve, Fast Food Automation

·         Inspection, Vision & Test – CMM, Optical Comparator, Vision

·         Packaging – Converting, Wrapping & Strapping, Web guide, Slitter, Palletizing, Pillow

·         Positioning Systems – Linear Actuator, Linear Stage, Multi-axis stage, Rotary indexer

·         Robotics - Pipe inspection, Submersible, Cleaning

·         Textile – Loom, Shuttle, Cutting systems, Shear, Embroidery

·          Woodworking Automation – Panel saw, Router, Gauge

·          Pump – Metering, Down hole, Seal-less

·          Paint Spray


Our Service


Pre-Sales Service

• Provide details about the production procedure of stepper motor 

• Assign engineers for installation and testing stepper motor

Sales Service

• Customized solution designs of hybrid stepper motor 

• Product rendering and steel structure drawing of stepper motor

• Company successful  stepper motor project examples and visits to our production and R&D base

After-Sales Service

• One-year quality warranty of stepper motor  with lifelong maintenance.

• Free guarantee repair l): free repair service during the quality warranty period and reasonable charge for spare parts and maintaining service after the quality warranty period. We will never exempt our responsibilities on product owned defects.

• Responding time: upon receiving user’s notification, we ensure 24-hour after-sales technical support.

• Spare parts: necessary spare parts are provided together with products to customers.

• Free technical training: integrative and normative technology training is available for free to customers by our technical personnel to ensure they are skilled in regular operations of hardware and software of products and they are able to estimate and solve small problems.

• Telephone investigation: our after-sales team will phone the user every month during the warranty period to follow up the working condition of the products, and to discover and solve problems, if necessary.

• Site instruction service of installation is available.


Prostepper also provide OEM and ODM for a lot of BRAND-NAME companies.


We accept customized logo and customized packing


We warmly welcome Endusers and Agents to make inquiry to us, Prostepper would like to establish a widely cooperation with our esteemed customers.

Thank you for choosing Prostepper! We have strongly self-confidence to be your reliable and long-term motor provider.



Contact Details

Phone Number : +8618106129922

WhatsApp : +8618106129922