Neodymium Ring Magnets
Strong Rare-Earth Ring Magnets
Neodymium (also known as “Neo”, “NdFeb” or “NIB”) ring magnets are strong Rare-Earth magnets, circular in shape with a hollow center. Neodymium ring magnets are the most powerful magnets commercially available today with magnetic properties that far exceed those of other permanent magnet materials. Due to their high magnetic strength, neodymium ring magnets have replaced other magnetic materials in order to make a design smaller while achieving the same result.
Neodymium Ring Magnets in Assorted Sizes and Shapes
We stock licensed neodymium ring magnets in different lengths, OD/ ID diameters, finishes and premium grades. Finishing options for NdFeB ring magnets are uncoated, with a triple- coating (Ni-Cu-Ni) nickel finish or coated with Aluminum IVD (Ion Vapor Deposition) for optimal corrosion resistance. Not all of our magnets are shown on this website so please contact us today if you don’t see what you are looking for.
- Approximate Pull info
- Manufacturing Methods
- Standard Dimensional Tolerances
- Applications
- Custom Orders
* $15.00 total minimum order (excluding shipping & tax if applicable) - Items can be combined to reach the minimum amount.
Neodymium Ring Magnet Features & Characteristics
Approximate Pull Information
The approximate pull info listed is for reference only. These values are calculated under the assumption that the magnet will be attached to a flat, ground 1/2" thick mild steel plate. Coatings, rust, rough surfaces, and certain environmental conditions can significantly reduce the pull force. Please be sure to test the actual pull in your actual application. For critical applications, it is suggested that the pull be de-rated by a factor of 2 or more, depending on the severity of a potential failure.
Manufacturing Methods
Our neodymium discs are sintered for optimal magnetic strength and axially magnetized (the magnetism direction is along the axis of the magnet from the north to the south poles). Common finishing options include uncoated, nickel (Ni-Cu-Ni) and gold (Ni-Cu-Ni-Au) plated coatings.
Standard Measurement Tolerances for NdFeB Ring Magnets
Here are the standard tolerances for Rare Earth Magnets (SmCo & NdFeB) based on the following dimensions:
- +/- 0.004” on OD & ID dimensions ranging from 0.040” to 1.000”.
- +/- 0.008” on OD & ID dimensions ranging from 1.001” to 2.000”.
- +/- 0.012” on OD & ID dimensions ranging from 2.001” to 3.000”.
*Tolerance on thickness +/-0.004” regardless of size.
Neodymium Ring Magnet Applications
NdFeB rod and cylinder magnets are often used in power generation equipment, high performance motors, consumer electronics, magnetic sensors, high-end audio equipment, surgical instruments and high-intensity separators for industrial, medical, aerospace, automotive and commercial industries as well as consumer use. Visit our applications page to learn more.
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Custom Neodymium Ring Magnets
We can custom manufacturer neodymium ring magnets to fit your exact specifications, just send us a special request and we’ll help you determine the most cost effective solution for your specialty project. Our sister company, Integrated Magnetics, has over 60 years of experience in manufacturing complex magnetic assemblies for more technical applications.
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