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NEMA 14 Stepper Motor

NEMA 14 Stepper Motor inch35x35 MM Series two-phase (four-phase ) stepper motor is a type of brushless DC motor known for its precise control of angular movements. The "NEMA" designation refers to the standard set by the National Electrical Manufacturers Association, which defines the motor's dimensions and mounting configurations. The number "14" specifies the motor size, indicating that the faceplate measures 1.4 inches in length.

  • 35H

  • CS

  • 8501109990

  • 35mm

  • 2 or 4 phase

  • 0.4A~1.0A


  • 20mm~36mm


High Torque NEMA 14 Stepper Motor made by the manufacturer&supplier -Cosda Automation

NEMA 14 Stepper Motor Description:

We're the professional hybrid stepper motor manufacturer. The NEMA 14 stepper motor is part of the National Electrical Manufacturers Association (NEMA) standard, which defines the dimensions and specifications of various motors. The "14" in NEMA 14 represents the mounting face's size, indicating that it measures 1.4 inches square (35mm). This compact size makes the NEMA 14 stepper motor ideal for applications with limited space, such as small robotic arms, camera gimbals, and medical devices.

NEMA 14 Hybrid Stepper motor made by the stepper motor manfacturer Cosda Automation has the following characters :

Small size NEMA 14 Stepper Motor 35mm hybrid stepper motor

Model: NEMA14, 35H

Phase: 2phase or 4 phase

Stepper Angle: 200 steps per revolution (1.8 deg/step)1.8º

Low Current

High Holding Torque

Lead wire no.: 4 or 6 wires

Speed: low or high speed

Shape: Square

NEMA 14 Stepper Motor Features:


Some of the main features of a NEMA 14 stepper motor include:

● High torque-to-size ratio

● Accurate positioning and repeatability

● Low power consumption

● Smooth and quiet operation

● Easy to control and program

● Available in a range of step angles and holding torques

NEMA 14 Stepper Motor Paramaters:

Step Angle----------------------------- 1.8°±5%

Temperature Rise-------------------------- 80℃ Max.

Insulation Resistant-------- 100MΩ Min.,500VDC

Dielectric Strength-------- 500VAC for one minute

Ambient Temperature ---------- —20~+50

Shaft Radial Play------------------------------- 0.02Max.(450 g-load)

NEMA 14 Stepper Motor Technical Specs:

Model No.

Rated Voltage




Holding Torque


No.of leads

Rotor Inertia


Signal shaft

Double Shaft

















































































NEMA 14 Stepper Motor Dimensions :

Nema 14 stepper motor

NEMA 14 Stepper Motor Wiring Diagram : 

4 wires6 wires

NEMA 14 Stepper Motor Wire Colors can be customized

The stepper motors can be customized according to the customers' requirements.

NEMA 14 Stepper Motor Customizable Factors:

● Motor Shaft

● Cable

● Connector

● Encoder

● Brake

● Gearbox

NEMA 14 Stepper Motor Data Sheet Download 

NEMA 14 Hybrid Stepper Motor.pdf

How does a NEMA 14 Stepper Motor Work?

Unlike traditional motors that rely on continuous rotation, a NEMA 14 stepper motor moves in discrete steps. Each step corresponds to a fixed angle, typically 1.8 degrees for full-step mode. The rotation of the motor shaft is controlled by energizing specific coils in a precise sequence. This magnetic field interaction generates the necessary torque to move the motor shaft from one step to another.

Types of NEMA 14 Stepper Motors

There are two main types of NEMA 14 stepper motors:

Unipolar Stepper Motor

The unipolar stepper motor is easier to control and commonly used in applications that do not require high torque. It has two windings per phase, with a center tap for each winding. This configuration allows for energizing one phase at a time, making it simpler to drive.

Bipolar Stepper Motor

The bipolar stepper motor is more versatile and powerful than the unipolar type. It has a single winding per phase and requires an H-bridge circuit to reverse the current flow and change the magnetic polarity. This results in better torque and performance, especially at higher speeds.

4. Advantages of NEMA 14 Stepper Motors

Precise Positioning

NEMA 14 stepper motors offer exceptional positioning accuracy, making them ideal for applications that demand precise and repeatable movements.

Compact Design:

With its small form factor, the NEMA 14 motor can fit into tight spaces without compromising on performance. This feature makes it an excellent choice for applications where size is a crucial factor.

Open-Loop Control

One of the significant advantages of NEMA 14 stepper motors is their open-loop control. They do not require feedback devices like encoders, simplifying the control system and reducing costs.

High Torque at Low Speeds

Stepper motors deliver substantial torque at low speeds, ensuring stability and control during slow movements, which is critical in many applications.

Energy Efficiency

Since the power is applied only when needed for each step, NEMA 14 stepper motors are energy-efficient, especially at idle or holding positions.

Applications of NEMA 14 Stepper Motors

NEMA 14 stepper motors find applications in various industries due to their versatility and precision. Some common applications include:

3D Printers

In 3D printing, NEMA 14 stepper motors are used to control the movement of the printer's extruder and build platform, enabling precise layer-by-layer deposition.

CNC Machines

In Computer Numerical Control (CNC) machines, NEMA 14 stepper motors are utilized for controlling the motion of the cutting tools, ensuring accurate and controlled machining operations.

Camera Systems

NEMA 14 stepper motors are employed in camera systems for precise panning, tilting, and focusing of the camera lens, allowing photographers and filmmakers to capture stunning shots.


In robotics, NEMA 14 stepper motors serve as actuators for various joints, enabling robots to move with precision and perform complex tasks.

Medical Devices:

In medical equipment, where space is limited, the NEMA 14 motor provides the necessary motion control.

How to Select the Right NEMA 14 Stepper Motor?

Choosing the appropriate NEMA 14 stepper motor requires consideration of various factors. Here are some essential steps to guide your selection process:

Identify Your Application Requirements:

Understand the specific requirements of your project, including torque, speed, and precision needed.

Determine Bipolar or Unipolar:

Decide whether you need a bipolar or unipolar motor based on your control preferences and torque requirements.

Check Voltage and Current Ratings:

Ensure that the motor's voltage and current ratings match your power supply and driver specifications.

Evaluate Shaft Configuration:

Consider the shaft type (single or double), diameter, and length that will best suit your mechanical setup.

Review Holding Torque:

Verify the holding torque to ensure it meets your application's demands, especially if the motor needs to maintain position against external forces.

Consider Microstepping:

Microstepping capability can improve motor resolution and reduce vibration, so evaluate if it's necessary for your application.

Installation and Wiring

Once you've selected the right NEMA 14 stepper motor, the next step is to install and wire it properly. Follow these general guidelines for a successful setup:

Read the Datasheet:

Review the motor's datasheet and documentation for specific installation instructions and wiring diagrams.

Use Compatible Driver and Controller:

Pair the NEMA 14 motor with a suitable stepper motor driver and controller for optimal performance.

Follow Wiring Standards:

Adhere to the manufacturer's guidelines for wiring the motor to avoid damage or malfunction.

Test and Calibrate:

After installation, test the motor and calibrate its movement using appropriate control software.

How to Drive a NEMA 14 Stepper Motor?

Driving a NEMA 14 stepper motor requires appropriate control circuitry. Two common methods are:

Using Driver ICs

Driver ICs (Integrated Circuits) are commonly used to control stepper motors. They provide step and direction inputs and handle the necessary current switching.

Connecting Arduino with NEMA 14 Stepper Motor

For hobbyists and small-scale projects, Arduino microcontrollers can be used to drive NEMA 14 stepper motors. The process involves connecting the motor to the Arduino and programming the controller to generate the required step sequence.

Tips for Optimal Performance

To ensure optimal performance and longevity of your NEMA 14 stepper motor, consider the following tips:

Avoiding Resonance

Stepper motors are susceptible to resonance, which can lead to erratic movements and reduced performance. Use appropriate dampening techniques or microstepping to minimize resonance effects.

Cooling and Heat Dissipation

If the motor operates continuously at high torque, it may generate heat. Ensure adequate cooling and heat dissipation to prevent overheating and potential damage.

Regular Maintenance

Perform regular maintenance, such as cleaning, lubrication, and checking for loose connections, to keep the motor in top condition and extend its lifespan.

Troubleshooting Common Issues

Even with proper maintenance, NEMA 14 stepper motors may encounter issues. Here are some common problems and their solutions:


Reduce the load or current supplied to the motor to prevent overheating. If necessary, improve the motor's cooling mechanism.

Vibration and Noise

Vibration and noise can result from resonance or mechanical issues. Check for loose connections or worn-out components and ensure proper dampening.

Erratic Movement

Ensure that the motor's driver circuitry is functioning correctly and that there are no loose connections or damaged cables.

Wiring Problems

Check the wiring connections and verify that they match the motor's specifications and the driver circuitry requirements.

NEMA 14 vs. Other Stepper Motors

While the NEMA 14 stepper motor has its unique advantages, it's essential to compare it with other stepper motor types to make an informed choice:

NEMA 14 vs. NEMA 17:

NEMA 17 motors are larger and generally provide higher torque, but they are not as compact as NEMA 14 motors. If space is limited, the NEMA 14 motor might be a more suitable option.

NEMA 14 vs. NEMA 23:

NEMA 23 motors are more powerful and can handle heavier loads, but they are bulkier than NEMA 14 motors. If you require a smaller motor with sufficient torque, the NEMA 14 is worth considering.

NEMA 14 vs. Servo Motors:

Servo motors offer higher accuracy and faster response times, but they are also more expensive. NEMA 14 motors provide a cost-effective solution for applications that don't demand extreme precision.

The Future of NEMA 14 Stepper Motors

As technology advances, NEMA 14 stepper motors are expected to become even more efficient, compact, and cost-effective. They will continue to play a significant role in various industries, especially where precision motion control is essential.

FAQs for NEMA 11 Stepper Motor

1. Can I use a NEMA 14 stepper motor in a 3D printer?

Yes, NEMA 14 stepper motors are commonly used in 3D printers for controlling the extruder and build platform movements.

2. What is the significance of the NEMA 14 designation?

The NEMA 14 designation refers to the motor's size, with the faceplate measuring 1.4 inches in length.

3. Can I control the speed of a NEMA 14 stepper motor?

Yes, the speed of a NEMA 14 stepper motor can be controlled by adjusting the step rate and the driving voltage.

4. Do NEMA 14 stepper motors require feedback devices like encoders?

No, NEMA 14 stepper motors operate in an open-loop control system and do not require feedback devices like encoders.

5. What are the key differences between unipolar and bipolar NEMA 14 stepper motors?

Unipolar stepper motors are easier to control but offer lower torque, while bipolar stepper motors are more powerful and versatile, providing higher torque at higher speeds.

FAQs for the factory : 

1. Are you a factory?

Yes, we are facotry, and we produce Stepper Motor& Stepper Motor Driver,  Switching Power supply, Short Cycle Press Line and other automatic machines.

2. How to select models?

Before purchasing, please contact us to confirm model No. and drawings to avoid any misunderstanding.

3. Do you offer OEM & ODM service? 

Yes.We can supply OEM&ODM and make customized design for any specific application.

4. How can we know the product quality?

We suggest you ording a sample. And you can also send us email with detailed photos and specifications for checking if you cannot get enough information in the product page.

5. What's the delivery time?

Except special order.For samples usually 10-14 working days .For batch order .Usually 17-25days. For Stock motors usually 1~2 days.

Cosda Automation is a manufacturer of a wide variety of automatic products.



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