Leadshine® Stepper Motor – Selection Guide

Introduction

Leadshine® CM Series hybrid stepper motors are designed for precision motion control applications, offering different frame sizes, holding torque ratings, and electrical specifications to meet a wide range of industrial and automation requirements.

RAM Electronics is an authorized Leadshine distributor in Egypt, supplying genuine Leadshine stepper motors for CNC machinery, robotics, industrial automation, and engineering applications.

Use the comparison table below to find the right motor based on frame size, holding torque, motor length, rated phase current, and shaft dimensions.

Leadshine Stepper Motor Comparison

The following table compares the available Leadshine CM Series stepper motor models offered by RAM Electronics.

Note: Torque values represent holding torque. Shaft dimensions and motor length should be checked against your mechanical installation requirements.

How to Choose the Right Stepper Motor

When selecting a stepper motor, consider the following key specifications:

1. NEMA Frame Size

The NEMA size determines the motor's mounting dimensions and helps ensure mechanical compatibility with your machine.

2. Holding Torque

Choose a motor with sufficient holding torque for your application. For moving loads, also consider the available torque at the required operating speed.

3. Rated Phase Current

Make sure the motor's rated phase current is compatible with the selected motor driver.

4. Motor Length and Shaft Diameter

Check the available installation space, shaft diameter, and mechanical connection requirements before selecting a motor.

5. Shaft Configuration

Some models feature a dual-shaft design, allowing mechanical connections from both ends of the motor. Check the complete model number to identify the correct configuration.

Important Model Differences

Some Leadshine motors have similar model numbers and mechanical dimensions but different electrical specifications.

• 42CM04 vs. 42CM08-1A: The 42CM08-1A offers twice the holding torque but has a longer motor body.
• 57CM23-3A vs. 57CM23-SZ: Both offer 2.3 N·m holding torque, but the SZ version features a dual-shaft design and a higher rated phase current.
• 86CM45C vs. 86CM45-SZ: Both have similar motor dimensions, but the SZ version features a dual-shaft design, 4.6 N·m holding torque, and a higher rated phase current.

Always check the complete model number and its technical specifications before ordering.

Frequently Asked Questions (FAQs)

1. What is the difference between NEMA 17, NEMA 23, and NEMA 34 stepper motors?

The main difference is their frame size and mounting dimensions. NEMA 17 motors are smaller, NEMA 23 motors are medium-sized, and NEMA 34 motors are larger and generally offer higher torque capacity.

2. How do I choose the correct holding torque?

Consider the load, friction, acceleration, and required operating speed of your application. Select a motor with sufficient torque under actual operating conditions.

3. What is the difference between holding torque and running torque?

Holding torque is the torque produced when the motor is energized and stationary. Running torque is the torque available while the motor is rotating and varies with operating speed.

4. What does the -SZ suffix mean in Leadshine motor models?

The -SZ suffix identifies a dual-shaft motor configuration in the Leadshine CM Series.

5. Can two motors with the same NEMA size have different holding torque?

Yes. NEMA size specifies the motor's frame dimensions, not its holding torque. Motors with the same NEMA size can have different torque ratings, lengths, and electrical characteristics.

6. Can I use a motor with a higher rated current?

Yes, if the selected driver supports the motor's rated phase current and the electrical requirements of the application are properly met.

7. Does a longer stepper motor always provide higher torque?

Not necessarily. Motor design, winding characteristics, and magnetic specifications also affect torque performance. Always compare the actual specifications of each model.

8. Why is the complete motor model number important?

Model suffixes can indicate differences in current rating, winding characteristics, or shaft configuration. Always verify the complete model number before selecting or ordering a motor.

Explore Leadshine Stepper Motors at RAM Electronics

RAM Electronics is an authorized Leadshine distributor in Egypt, offering genuine stepper motors and motion control products for engineers, manufacturers, universities, and automation specialists.

Explore our Leadshine product range or contact our technical sales team for assistance in selecting the right motor for your application.