Neodymium Arc Magnets

Neodymium arc magnets are powerful, rare-earth magnets designed with a curved shape, making them ideal for motors, generators, and magnetic bearing applications. Their high magnetic strength and precision engineering ensure efficient performance in industrial, automotive, and renewable energy sectors. With various sizes, grades, and corrosion-resistant coatings available, our neodymium arc magnets offer durability and reliability for demanding applications. Whether for electric motors, wind turbines, or other high-performance systems, these magnets provide exceptional power and efficiency.

Description:

Neodymium arc magnets, also known as segment magnets, are curved, rare-earth magnets designed for high-performance applications. When assembled, they form a magnetic ring with key advantages:

Radial Effect: Closely mimics a radially magnetized ring.
Easy Integration: Fits tightly in motors, reducing air gap and increasing flux.
Cost-Effective: Easier and cheaper to manufacture than a single large ring.

These features make arc magnets ideal for permanent magnet motors, generators, torque couplings, pumps, voice coil motors, and Halbach arrays.

Specifications:

Material: Neodymium Iron Boron (NdFeB)
Shape: Arc (Curved Segment)
Tolerance: ±0.004″ (0.1mm) for all dimensions
Grade: N50 N52 (one of the strongest commercially available grades)
Plating/Coating: Nickel (Ni-Cu-Ni), Zinc, or Epoxy for corrosion resistance
Magnetization Direction:

North on the Outside Face South on the Outside Face

Magnetized through Circumference Magnetized through Thickness

Common Applications:

Motors & Generators – Essential for high-performance electric motors, alternators, and turbines.
Magnetic Bearings & Couplings – Used in precision engineering and mechanical systems.
Renewable Energy – Applied in wind turbines and other sustainable energy technologies.
Industrial & Automotive Uses – Found in automotive starters, power tools, and industrial machinery.