Super Neodymium Ring Magnet

Super Neodymium Ring Magnets are high-performance magnets made from rare-earth materials. Their unique ring shape and strong magnetic properties make them ideal for various applications requiring compact design, high magnetic strength, and precise alignment. Below are the common applications and technical specifications.

Applications

1. Motors and Generators
• Used in brushless DC motors, servo motors, and stepper motors to improve efficiency and power density.
• The ring shape allows for seamless integration with rotor designs.
2. Sensors and Encoders
• Provides high-precision magnetic fields for angular and rotational position detection in automotive and industrial applications.
3. Medical Devices
• Incorporated in MRI machines, dental equipment, and surgical tools for their strong and stable magnetic properties.
4. Electronics and Audio Equipment
• Found in high-fidelity speakers, microphones, and headphones to enhance sound quality.
5. Magnetic Couplings and Seals
• Facilitates non-contact torque transfer in pumps, mixers, and mechanical seals.
6. Research and Development
• Used in laboratories for magnetic levitation, particle separation, and other experimental setups.

Technical Parameters

1. Magnetic Properties
• Remanence (Br): 1.2–1.4 T (12,000–14,000 Gauss)
• Coercivity (Hc): ≥ 12 kOe (≥ 955 kA/m)
• Maximum Energy Product (BHmax): 30–52 MGOe (239–414 kJ/m³)
2. Temperature Resistance
• Operating Temperature: 80°C–200°C depending on the grade (e.g., N35, N52, or H-series).
• Curie Temperature: 310°C–370°C.
3. Material Composition
• NdFeB: Neodymium (Nd), Iron (Fe), and Boron (B).
• Optional additives for high-temperature grades include Dysprosium (Dy) and Terbium (Tb).
4. Mechanical Dimensions
• Inner Diameter (ID): As small as 3 mm.
• Outer Diameter (OD): Customizable, ranging from 10 mm to 200 mm.
• Thickness: Typically 1–50 mm, with tolerances of ±0.05 mm.
5. Coating Options
• Nickel-Copper-Nickel (Ni-Cu-Ni): Standard for corrosion resistance.
• Epoxy: For added protection in humid environments.
• Zinc or Parylene: Specific to medical and electronic applications.
6. Magnetic Orientation
• Axial or radial magnetization depending on the application.
7. Mechanical Strength
• Brittle material; requires careful handling to avoid cracking or chipping.