How to Avoid Magnet Pole Misalignment During Permanent Magnet Motor Assembly?

As an engineer with years of experience in the motor industry, I understand how a "small issue" like pole misalignment can cause "big trouble." Today, I’ll share practical solutions to help you easily tackle this frustrating problem.

Why Is Pole Misalignment Such a Headache?

Imagine your carefully designed motor losing 10-15% efficiency due to magnet misalignment—not to mention the annoying noise and vibrations. Worse, this issue often only surfaces during testing, leading to costly rework and waste.

The Three Main Culprits of Pole Misalignment

1. Limitations of Manual Assembly – Even skilled workers struggle with precision. Our tests show manual placement typically has ~0.3mm error.

2. Magnetic Interference – Attraction/repulsion between magnets makes alignment difficult, like forcing two repelling magnets together.

3. Thermal Expansion Traps – Many factories overlook how temperature changes cause tiny but critical deformations (0.x mm) in fixtures.

Three Practical Solutions

1. High-Precision Fixture Design