PM Stepping Motor Custom Guide: Reduce Assembly Time Through Optimal Customization

Prevent design compromises: flexible specifications tailored to your applications

Are you struggling with standard sizes that don't fit? Looking to speed up wiring assembly and parts procurement? MinebeaMitsumi's PM stepping motors offer comprehensive customizations, including shaft modifications and connector integration. This article explores custom options designed to increase your design flexibility and reduce costs.

View all shaft shapes and front plates not covered in the downloadable materials. Check the hybrid stepping motor customization guide here

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1. MinebeaMitsumi PM stepping motor custom options

• Torque

  

  Fine-tune torque for your specific speed range via optimized resistance and magnet materials.

• Lead Wires and Connectors

  

  Custom wiring and connector configurations tailored to your manufacturing environment.

• Shaft Shapes, Lengths & Diameters

  

  Customize output shafts for mounting pulleys or gears. We also offer custom shaft lengths, diameters, and dual-shaft options.

• Front Plate

  

  Available with standard round, tapped, or slotted mounting holes. Supports mounting angles from 30° to 150°.

• Motor Input Connection Type

  

  Select the connection type that minimizes total costs for your application.

• Nameplates and Labels

  

  Customized labels and nameplates featuring QR codes and Data Matrix codes to meet strict traceability requirements.

2. Torque adjustment through resistance optimization and magnetic materials

Torque comparison: bonded neodymium vs. plastic ferrite

Precise torque adjustment is achieved through resistance optimization and magnetic material selection. Choose the ideal magnet for your application, such as a plastic ferrite magnet with excellent temperature stability, or a bonded neodymium magnet for high torque output.

• Bonded neodymium: High torque
• Plastic ferrite : Superior temperature characteristics

For details on the resistance range, please refer to "Resistance range by series" on page 2 of the downloadable document

3. Integration of lead wires and connectors to reduce assembly time

Custom connector examples

While our standard models feature 300 mm flying leads, we offer extensive customizations to prevent on-site assembly errors. Customization options include connector attachment, cable sleeving, and printed marker tubes for identification.

• Compatible with major connector brands: HRS, JST, JWT, TE, and more.
  （Please contact us for specific model numbers.）
• UL/CSA standard-compliant lead wires

4. Customizing shaft shape, length, and diameter

Custom shaft examples

We offer custom machining tailored to your installation and output requirements, including modifications to the motor shaft length and diameter, alongside D-cuts, grooves, and holes on the shaft end. We also select materials and design power transmission components, such as pulleys and worm gears, optimized for the motor's application and operating conditions. Delivering motors with these components pre-assembled reduces your overall assembly time.

• Additional machining : 
  D-cuts, drilling, grooving, pin press-fitting, and knurling to match your mounting method.
• Component integration : 
  Delivering motors with pre-installed pulleys or gears to reduce your on-site assembly efforts.
• Length and diameter modifications : 
  Custom lengths not listed in the catalog, shaft diameter changes, and dual shaft configurations.

• Shaft diameter lineup : Φ1.5, Φ2, Φ3, Φ6.345 mm

For an illustrated list of shaft shapes and specification examples, please refer to the downloadable document

5. Front plates for resolving mounting issues

Custom mounting holes examples

Custom mounting angles examples

Customizing the front plate can resolve common mounting challenges, such as incompatible specifications or the inability to secure a nut on the back.
While round holes are standard, tapped (internal thread) and slotted options are also available. Tapped types (excluding the PM55 series) feature burring to ensure sufficient thread depth for secure bolt fastening.
The mounting angle refers to the angle between the right-hand hole and the terminal center when viewing the motor from the front. Angles from 30° to 150° are available. Please consult us for angles outside this range.

Supported mounting holes and angles by series

6. Five motor input connection types

You can choose from five motor input connection methods to best suit your equipment and assembly process. Specifying the optimal connection method in advance eliminates the complex wire harnessing or relay components, improving assembly efficiency and ensuring consistent product quality.
*For motors with a diameter of 8 cm or less, only the FPC method is available.

7. Nameplates and labels for enhanced traceability and quality control

Nameplate labels examples

To meet today's stringent quality control standards, we offer solutions that simplify individual unit management.
Our custom nameplate labels can be printed with standard text, QR codes, or Data Matrix (2D) codes. This ensures reliable traceability at manufacturing sites and in the field.

* QR Code is a registered trademark of DENSO WAVE INCORPORATED.

8. FAQ

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