Neodymium Ring Magnets

Neomagnets is a highly experienced and specialized company that excels in manufacturing and producing top-quality Neodymium Ring Magnets. Whether for industrial applications, research and development purposes, or any other magnetic needs, Neomagnets is the trusted partner that guarantees superior products and unparalleled service.

Neodymium Ring Magnets

Neodymium ring magnets are strong rare-earth magnets with a circular shape and a hollow center. They have numerous consumer, industrial, scientific, and medical applications, such as holding, motors, electronics, sensors, and speakers.

Features of Neodymium Ring Magnets

As a supplier of custom neodymium magnets, we offer a wide range of sizes, from large-diameter rings up to 120mm to small rings with diameters as small as 1.5mm. The inside diameter of the hole can be customized to fit specific applications or for better fitment options.

Ring Magnet

Dimensional Identification

Please note that as a supplier of neodymium magnets, we use different identification for ring magnets compared to disc shapes.

For ring/circular neodymium magnets, we use D for the outer diameter, d for the inner diameter, and H for the thickness (height). For example, if a ring magnet has D10 x d7 x 3 mm dimensions, its outer diameter is 10 mm, inner diameter is 7 mm, and thickness is 3 mm.

Ring neodymium magnets come in two types: those with straight holes drilled vertically into the magnet and those with countersunk holes, which include a primary hole and a major hole.

For ring or circular neodymium magnets with a countersunk hole, the letter D represents the outer diameter, and the letter M represents the diameter of the major hole. A ring magnet with dimensions of D10 x M7 x 2 mm has an outer diameter of 10 mm, a major hole diameter of 5 mm, and a thickness of 2 mm. It is recommended also to include the countersunk angle.

Note: Using this dimensional identification for custom neodymium magnets can help avoid misunderstandings about dimensions.

Available Dimensions of Neodymium Ring Magnets

Available Sizes For Neodymium Ring Magnets

Outer diameters: 1.5 – 300 mm (1/16 – 11 13/16 inches) 

Inner diameters: 0.4 – 250 mm (1/64 – 9 27/32 inches) 

Height: 0.3 – 120 mm (1/64 – 4 ¾ inches) 

Magnetic direction: 100mm (3 15/16 inches)

Note: We can offer specific limits for your designs. If your designs are close to the maximum or minimum values, we must confirm details on a case-by-case basis.

The Largest Ring

We can produce the largest neodymium ring magnets with the following dimensions:

Outer diameter of 250mm, inner diameter of 220mm, and a height of 60mm (4 ¾ – 3 1/8 x 2 3/8 inches).

We can also produce magnets with an outer diameter of 80mm, an inner diameter of 50mm, and a height of 120mm (3 1/8 – 1 15/16 x 4 ¾ inches).

The Smallest Ring

We can produce micro neodymium magnets with small dimensions.

Dimensions: outer diameter of 1.5mm, inner diameter of 0.4mm, and height of 0.3mm (equivalent to 1/16 – 1/64 x 1/64 inches).

Please note that for ring shapes with large outer diameters, the thickness should not be too small,

And for larger ring shapes, the wall should not be too thin as they are prone to breaking.

Grades of Neodymium Ring Magnets

Neodymium magnets come in different grades, ranging from N35 to N55, and also have high-temperature designs for special applications, such as H, M, SH, EH, and AH.

Please refer to our introduction to neodymium magnet grades to determine which grade is most appropriate for your needs.

Magnetization Directions

Ring magnets can be magnetized axially or radially, similar to circular magnets.

Axially magnetized ring magnets have north and south poles on two planes, while radially magnetized ring magnets have north and south poles on the circular side.

Magnetization Directions

Operational Tips:

1) Neodymium magnets are weak, unstable, and highly magnetic. So, remember to use them with caution, especially for giant versions with slender heights.
2). If the ring neodymium magnets become stuck together and cannot be separated, divide them laterally rather than perpendicularly. If you’re unsure what it implies, check out our piece on dividing magnets.
3) Keep neodymium magnets away from items readily affected by magnetism, such as displays, credit cards, laptops, televisions, mobile phones, etc.

FREE Quotes For Custom Designs

We can manufacture custom ring neodymium magnets to fit your exact specifications. We are always happy to assist you in identifying the optimal solution for your needs.

Please click the ‘Get a Quote’ button in the top right corner to contact us.

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