Neodymium Ring Magnets

*Note: The approximate pull info listed is for reference only. These values are calculated assuming 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 it's exact context. 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.

Features & Technical Information for Rare-Earth Neo Ring Magnets

Like all rare earth neodymium magnets, neo ring magnets feature exceptional pull strength. They also resist demagnetization, providing a reliable, long-term magnet solution for industrial and commercial applications. We are an industry leading supplier of high-quality neodymium ring magnets, and a trusted source to customers worldwide for licensed permanent magnets of all types.

Manufacturing Methods for Neo Ring Magnets

Our neodymium ring magnets 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 a triple layer nickel (Ni-Cu-Ni) plating, or aluminum IVD coating.

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.

Maximum Operating Temperatures for Neodymium Magnet Grades

Here are the maximum operating temperatures and curie temperatures for standard and specialty neodymium magnet grades:

*Note: The maximum operating temperature for a magnet is dependent on the magnetic circuit that it is operating in. The values above are a guide assuming that the magnet is operating at a permeance coefficient of 1. The higher the permeance coefficient, the higher the temperature the magnet can operate in. The values noted indicate the temperatures at which the magnetic characteristics begin to decline more rapidly. The Curie temperature (at which the magnets become demagnetized and cannot be remagnetized) for standard neodymium magnets is 310°C or 590°F.

Neodymium Ring Magnet Industrial & Consumer Applications

NdFeB rod and cylinder magnets are used extensively in commercial, industrial, and consumer applications. These powerful magnets are found in power generation equipment, high-performance motors, consumer electronics, magnetic sensors, surgical instruments, and high-intensity separators for medical, aerospace, and automotive components. Additional uses for rare earth neo ring magnets include:

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Custom Neodymium Ring Magnets

We can custom manufacturer neodymium ring magnets to fit your exact specifications. Simply 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.

Your Source for Premium Neodymium Ring Magnets & More

At Magnet Shop, we supply top-quality magnets. In addition to our selection of neodymium ring magnets, we offer licensed magnets in premium grades, sizes, shapes, and materials, including samarium cobalt magnets, ceramic magnets, flexible magnets, and more. With fast nationwide delivery and global shipping options, Magnet Shop is your one-stop source for rare earth neodymium ring magnets and permanent magnets of all types.

Click here for more information and product options:

• Magnet Materials Overview
• Ceramic Magnets
• Flexible Magnets
• Samarium Cobalt Magnets