High-Performance Neodymium Ring Magnets for Industrial & OEM Applications
We are your reliable partner for Strong Neodymium Ring Magnets. We provide ISO 9001 and RoHS certified manufacturing, massive in-stock inventory, and direct-from-factory pricing. We engineer solutions for the most demanding applications in automotive, medical, motors, and consumer electronics.
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Neodymium Ring Magnet Engineering Data
How to Choose the Right Ring Magnet Grade? (Strength vs. Temp)
Grade selection is about finding the right balance between magnetic strength, cost, and heat resistance.
- Neodymium Ring Magnet Strength Grades: N55 offers highest force in a compact size. N35 provides the best cost-performance for holding applications.
- Neodymium Ring Magnet Heat Grades: Standard 'N' grades demagnetize above 80°C. For automotive, motor, or industrial sensors, you MUST use high-temp grades (e.g., M, H, SH, UH). Contact our engineers to validate your thermal requirements.
How to Choose the Right Ring Magnet Coating
Iron in Neodymium ring magnets rusts easily, so a protective coating is essential. Here is a simple guide to help you choose ring magnets plating.
Nickel Plated Ring Magnets (Ni-Cu-Ni)
Best for: Dry, indoor use in offices, schools, and homes.
Epoxy Coated Ring Magnets
Best for: Outdoor, wet, and marine environments.
Gold Plated Ring Magnets (Au)
Best for: Medical implants, life-long devices, and high-end scientific equipment.
Rubber Coated Ring Magnets
Best for: Outdoor use, vehicle mounts, and protecting delicate surfaces.
Zinc Plated Ring Magnets (Zn)
Best for: Automotive use or dry areas with scratch risk.
Black Nickel Plated Ring Magnets (Ni-Cu-Black Ni)
Best for: Hidden, or decorative uses requiring a sleek black finish.
PTFE Coated Ring Magnets (Teflon)
Best for: Medical labs, chemical plants, and low-friction applications.
Plastic Coated Ring Magnets
Best for: Waterproof applications, preventing scratches on delicate surfaces.
Technical Specifications: Magnetization & Tolerances
Neodymium Ring Magnet Tolerances:Our standard tolerances are determined by the dimension:
- Dimensions over 10mm: +/- 0.1mm
- Dimensions 10mm and under: +/- 0.02mm
Neodymium Ring Magnet Magnetization Directions:99% are Axially magnetized (through Thickness). Diametric magnetization (poles on the curved sides) and Multi-pole polarization are available for custom sensors and motors.
Your Quality & Supply Chain Partner for Neodymium Ring Magnets.
We are not just a Neodymium Ring Magnet supplier; we are a partner. Our quality systems ensure your production line never stops.
RoHS & REACH Compliant
Beyond Manufacturing: Custom Neodymium Ring Magnet Engineering
We don’t just build magnets; we design them for your success. As your direct factory partner, we create the perfect NdFeB Ring magnet for your application.
- Application-Driven Design: We create drawings based on your specific use case, including countersunk holes for flush mounting.
- Expert Recommendations: We help you choose the ideal grade, coating, and magnetization.
- Guaranteed Quality: ISO 9001 certified, RoHS & REACH, 100% inspection.
What Are Neodymium Ring Magnets?
Neodymium Ring Magnets, also known as donut magnets or circular magnets with a hole, are permanent magnets with a circular profile and a central hole (defined by an Outer Diameter, Inner Diameter, and Thickness). As a type of NdFeB magnet, they are sintered from an alloy of Neodymium, Iron, and Boron, making them the most powerful permanent magnets.
- Allows for easy mounting with screws, bolts, or rods.
- Countersunk Ring Magnets are available for a flush, clean finish.
- Ideal for mechanical fixtures, jigs, and holding systems.
- Enables concentric designs for sensors, speakers, and motors.
Neodymium Ring Magnets Applications
Neodymium ring magnets excel in applications requiring secure mechanical fastening and precise magnetic field alignment. They are the core component in high-performance motors, generators, speakers, and rotational sensors. Their ability to be mounted with screws makes them essential for industrial jigs, fixtures, and heavy-duty holding applications, while countersunk versions provide a clean, professional finish in cabinetry, signage, and OEM devices.
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