Stepper Motor Bonded NdFeB Magnets

Engineered for uniform magnetic flux and precise angular positioning. Our bonded neodymium magnets are the standard for high-performance stepper motors in automation, 3D printing, and precision medical pumps.

Up to 48

Poles

±0.05mm

Tolerance

BNP-6~12

Grades

ISO 9001

Certified

Low

Cogging Torque

Consistent Step Accuracy for Demanding Automation

Our bonded NdFeB magnets are compression-molded to achieve complex geometries and high-pole-count magnetization patterns that sintered magnets cannot match.

• ✓ Up to 48 poles for high-resolution positioning
• ✓ Uniform pole pitch accuracy within ±1°
• ✓ Minimal cogging torque for smooth rotation
• ✓ Flux uniformity deviation ≤3% per pole
• ✓ Advanced epoxy coating for humid environments
• ✓ 100% automated magnetic flux testing

Production Workflow

→

→

→

→

→

→

→

Technical Datasheet

Structural Specs

• Density: 5.8-6.3 g/cm³
• Tolerance: ±0.05mm
• Pole Count: Up to 48
• Max Temp: 120°C – 150°C

Coating Options

Essential for protecting NdFeB against oxidation and humidity.

Where It’s Used

3D Printers

Ensures smooth layer deposition with high-resolution stepper motors.

CNC Machining

Critical for axis movement where precise angular steps are mandatory.

Medical Infusion Pumps

Ultra-stable flow rates achieved through high-pole bonded rotors.

Textile Machinery

High-speed yarn control with minimal vibration and cogging.

Office Automation

Paper feed and scanning mechanisms in multi-function printers.

CCTV Pan-Tilt

Silent, precise camera positioning for security surveillance.

Factory Direct

Eliminate middlemen and get competitive OEM pricing directly from the source.

Custom Tooling

In-house mold design and manufacturing for your unique motor geometries.

Magnetic Testing

Advanced flux distribution testing to ensure pole pitch and strength uniformity.

Global Shipping

Reliable logistics for just-in-time delivery to your production line.

What is the typical MOQ for custom stepper motor magnets?

Our MOQ usually starts at 1,000 units for custom molds, though we can accommodate smaller pilot runs during the prototyping phase.

Can you match a magnet from an existing motor sample?

Yes, we can perform magnetic and material analysis on your sample to replicate or improve the performance for your application.

What is the maximum pole count you can magnetize?

For standard stepper motor diameters (20mm-60mm), we can reliably magnetize up to 48 poles with excellent pitch uniformity.

How does pole pitch uniformity affect motor performance?

Uniform pole pitch is critical for reducing “ghost” steps and ensuring smooth, vibration-free rotation at low speeds.

Bonded vs sintered for stepper motors?

Bonded magnets are preferred for their ability to achieve complex multi-pole magnetization and tight tolerances without machining, which is often difficult and expensive with sintered magnets.