How to Select the Right Can Stack Stepper Motor for Your Application


Are you in the market for a can stack stepper motor but unsure how to choose the right one for your specific application? With so many options available, it can be overwhelming to make the best decision. Fear not, as this article will guide you through the process, ensuring that you have all the necessary information to select the ideal can stack stepper motor for your needs.

Understanding Can Stack Stepper Motors

Before delving into the selection process, it's important to have a clear understanding of can stack stepper motors. These devices are a type of stepper motor that uses a cylindrical-shaped rotor and multiple stator windings, also known as stacks, stacked on top of each other. Can stack stepper motors are known for their high torque output and precise motion control, making them suitable for a wide range of applications.

The Importance of Torque and Speed

When selecting a can stack stepper motor, two key factors to consider are torque and speed. Torque is the rotational force generated by the motor, which determines its ability to move loads and overcome resistance. Speed, on the other hand, refers to the rotational speed at which the motor operates. Both torque and speed requirements will vary based on your application, so it's crucial to evaluate these factors carefully.

Identifying Your Application's Requirements

To choose the right can stack stepper motor, it's imperative to identify your application's specific requirements. Consider the following questions:

1. What is the required torque for your application? Determine the maximum load the motor needs to move and select a motor with sufficient torque to handle that load.

2. What is the desired speed range? Different applications have varying speed requirements, so it's essential to choose a motor capable of operating within your desired speed range.

3. Are there any space constraints? Consider the physical dimensions and form factor of the motor to ensure it fits within the available space.

4. What level of precision is necessary? Can stack stepper motors offer precise motion control, but the level of precision required may differ across applications. Determine the desired level of accuracy to select a motor that meets your needs.

5. What is the operating environment? Factors such as temperature, humidity, and vibration can affect the performance and lifespan of a motor. Ensure the selected motor is suitable for the specific operating environment of your application.

Considering Electrical Specs

Apart from torque and speed, it's crucial to consider the electrical specifications of a can stack stepper motor. Key electrical parameters to evaluate include:

1. Rated Voltage: This is the voltage at which the motor is designed to operate optimally. Choose a motor with a rated voltage that matches your power supply.

2. Current Rating: The current rating indicates the amount of current required to drive the motor. Select a motor that can handle the necessary current for your application.

3. Inductance: Inductance affects the motor's ability to accelerate and decelerate quickly. Lower inductance values enable quicker changes in current and, therefore, faster motor response.

4. Step Angle: The step angle determines the angular displacement of the motor per step. Common step angles for can stack stepper motors include 1.8 degrees (200 steps per revolution) and 0.9 degrees (400 steps per revolution).

5. Holding Torque: Holding torque refers to the maximum torque the motor can generate when stationary, holding its position. A higher holding torque is preferable when applications require holding a load without power.

Choosing the Right Stack Configuration

Can stack stepper motors come in different stack configurations, offering varying performance characteristics. There are primarily three types of stack configurations to consider:

1. Single-Stack: Single-stack motors feature a single stator winding and are known for their simplicity and cost-effectiveness. They are suitable for applications that don't require high torque or have limited space.

2. Dual-Stack: Dual-stack motors have two stator windings, which provide increased torque output compared to single-stack motors. They are ideal for applications with larger loads or where higher torque is required.

3. Multi-Stack: Multi-stack motors offer the highest torque output and are suitable for applications that demand substantial torque, such as robotics and industrial automation. However, they are generally larger and more expensive than single or dual-stack options.

Considering Mechanical Considerations

In addition to electrical and performance considerations, it's essential to evaluate mechanical factors when selecting a can stack stepper motor. Some crucial mechanical considerations include:

1. Mounting Options: Determine the mounting options available for the motor and ensure they align with your application's requirements. Common mounting options include face mounting, flange mounting, and threaded holes.

2. Shaft Options: Consider the shaft size, length, and configuration that best suit your application. Depending on your needs, you may require a single or double-ended shaft, round or D-shaft, or a specific shaft diameter.

3. Bearings: Different bearing options are available, including sleeve bearings and ball bearings. Ball bearings offer higher load capacity and durability compared to sleeve bearings, making them suitable for applications with heavy loads or continuous operation.

4. Environmental Sealing: If your application operates in harsh conditions or requires protection from dust, moisture, or chemicals, choose a motor with appropriate environmental sealing, such as an IP rating.


In conclusion, selecting the right can stack stepper motor is crucial for ensuring optimal performance and reliability in your application. By considering factors such as torque, speed, electrical specifications, stack configuration, and mechanical considerations, you can make an informed decision. Remember to thoroughly evaluate your application's requirements and consult with experts if needed. With the right can stack stepper motor in place, you can achieve precise motion control and meet the demands of your specific application.


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