Neodymium Ring Magnets
We specialize in providing custom neodymium ring magnets tailored to meet the exact specifications of your business. Whether you need magnets for electric motors, sensors, medical devices, or other specialized applications, we have the expertise and capabilities to deliver solutions that drive your success.
Neodymium Ring Magnets Manufacturer
- Specifications to offer:
- Minimum order quantity: 1 piece
- Lead time:
- The fastest = 7 days for regular shapes the fastest shipping
- Standard = 20 days for custom designs
Ring Magnets Definition
Ring magnets are permanent magnets with a circular hole through the middle. This makes them like disc magnets, but with an opening in the middle. They’re sometimes called “donut magnets” because of their round shape.
Technical Specifications
Specification | Details |
|---|---|
Material | Neodymium-Iron-Boron (NdFeB) |
Maximum Energy Product | Up to 55 MGOe, depending on grade |
Temperature Range | -40°C to 200°C, depending on grade (e.g., N30AH for high-temperature applications) |
Residual Flux Density | 11,500 to 14,400 Gauss, depending on grade (e.g., N35 to N52) |
Pull Force | From 1 lb to 400 lbs, depending on size and grade |
Coatings | Nickel, zinc, epoxy, gold, and other options for corrosion resistance |
Tolerances | Standard: ±0.004″ to ±0.012″ for OD/ID; tighter tolerances available for custom orders |
Note: Neodymium magnets are brittle and prone to chipping or breaking if mishandled. Proper handling and storage are recommended to maintain their integrity.
Customization Options
We understand that every application is unique. That’s why we offer extensive customization options for our neodymium ring magnets to meet your specific needs:
Customization Category | Options/Details |
|---|---|
Sizes | From miniature magnets with diameters as small as 1.5mm to large industrial sizes exceeding 75mm, with custom inner diameters and thicknesses available. |
Grades | A wide range of grades from N30 to N55, including high-temperature grades (e.g., N30M, N30H, N30SH, N30UH, N30EH, N30AH) to suit different operating conditions. |
Coatings | Options include nickel, black nickel, chemical nickel, zinc, epoxy, phosphate, phosphate + Parylene, phosphate + Teflon, silver, gold, and nano coatings for enhanced corrosion resistance. |
Magnetization Directions | Standard axial (through thickness) and diametrical (across diameter) magnetization, with custom directions such as multipole configurations available for specialized applications. |
Tolerances | Standard tolerances (e.g., ±0.004″ for OD/ID up to 1.000″, ±0.008″ for 1.001″ to 2.000″, ±0.012″ for 2.001″ to 3.000″) with tighter tolerances available for precision requirements. |
Special Features | Countersunk holes, chamfered edges, or other custom modifications to meet specific design needs. |
Our state-of-the-art manufacturing processes, including sintering (up to 55 MGOe energy product), compression bonding (up to 10 MGOe), injection molding, and extrusion, ensure that each magnet meets your exact specifications. We also offer design assistance and prototyping services to help you develop the perfect magnet for your application.
How to Order Our Ring Magnets
Ready to enhance your product with custom neodymium ring magnets? Contact our expert team today to discuss your requirements. We offer:
Competitive Pricing: Cost-effective solutions without compromising on quality, with volume discounts available for large orders.
Fast Turnaround: Typical lead times of 4-6 weeks for custom orders, ensuring timely delivery for your projects.
Expert Support: Guidance from our magnet engineers to help you select the right magnet for your application, including assistance with design and prototyping.
Simply provide your specifications, including size, grade, coating, and magnetization direction, or share a drawing/sketch of your design. We’ll work with you to bring your vision to life.
Commitment to Quality
At Osenc Magnets, quality is at the heart of everything we do. Our neodymium ring magnets are manufactured to the highest standards, ensuring consistency, reliability, and performance. We adhere to international quality management systems, including REACH and RoHS compliance, and can provide documentation to meet your quality assurance needs. Our rigorous quality control processes ensure that every magnet meets or exceeds industry standards, giving you confidence in your application’s performance.
Ring Magnet Applications
Neodymium ring magnets are essential components in numerous industries due to their high performance and reliability. Some key applications include:
Automotive
Critical for electric motors in hybrid and electric vehicles, as well as in sensors, actuators, and other components in luxury cars.
Electronics
Integral to hard disk drives, high-end loudspeakers, and other consumer electronics requiring strong and compact magnetic fields.
Medical Devices
Used in MRI machines, dental equipment, and other medical tools where precise and powerful magnetic fields are essential.
Renewable Energy
Vital for wind turbine generators and other sustainable energy technologies, contributing to efficient energy production.
Aerospace
Integrated into sensors, actuators, and high-reliability systems where performance and durability are critical.
Magnetization Technology
Used in magnetizing fixtures to imbue other materials with magnetism, supporting manufacturing processes.
Contact Us
For more information or to request a quote, please reach out to us. Let us help you harness the power of neodymium ring magnets for your next project. Our team is ready to assist you in finding the perfect magnetic solution for your business.