Rare Earth Magnets Quick Ship and Custom Sizes

Rare earth magnets are high performance solutions that combine high pull force strength into a small form factor.  A Neodymium Magnet enables the use of a smaller magnet to generate the force required when compared to other materials.   This is particularly useful when high force is required and/or when space is an important design consideration.

Standard Grade (N35) Neodymium has very high resistance to demagnetization at ambient temperatures.  If your application requires exposure to heat > 176^O F, slight demonization may occur and high temperature grades may be necessary.  Please call us to specify alternate grades and specification appropriate for your application. 

Neodymium Magnets are available in a wide variety of sizes, shapes and energy levels.  Rochester Magnet offers a number of stock sizes through our Quick Ship inventory.  As always, we can also customize most anything you require.

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Neodymium Magnets are  commonly found in Packaging Applications where an elegant solution is required for closure.  Neodymium discs are often applied exposed using our convenient pre-applied adhesive.  Other applications require a stealth look and bury the Neodymium disc underneath the surface which due to the strength of the magnets allows for the reach to pull the package together.

Common Sizes Available with Adhesive

In applications where 2 magnets are more strength than required, cold-rolled steel discs and custom strike plates can be used as receptive mating surface.

Contact Us to walk you through deisgning a solution that fits your application.

Samarium Cobalt provides another Rare Earth Class magnet with properties similar to Neodymium.  Although the force potential of these magnets are less, they are significantly more resistant to elevated temperatures.  The higher cost and lower energy potential of these magnets typically makes them best suited for applications with a high force requirement within a high temperature environment. 

Since these magnets are not subject to corrosion, they are typically uncoated/unplated. However, they are also very brittle and must be handled carefully or they will chip.

Additionally, care must be taken in the application to minimize shock or fracture/chipping can occur.
Standard SmCo sizes and grades are provided in the chart below.

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