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Neodymium Ring Magnets

Sizes ranging from small to large heavy-duty rare earth neodymium rings

Powerful neodymium ring magnets are used widely across many industries that require rotation on a shaft, stacking, levitation or other applications where a hole in the middle of the magnet is required.

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Strong Rare Earth Neodymium Ring Magnets for Sale

We stock a wide variety of neodymium ring magnets in grades ranging from N35 to N52, with many different diameters and thicknesses to choose from. For easy mounting, our countersunk ring magnets are designed to screw directly into place, making them perfect for both professional and DIY projects. Our ring magnets are listed in order of diameter then thickness from small to large.

We offer large volume discounts for all ring magnets and have additional promotions, sales and special discount coupons for our newsletter subscribers.

Ring Magnet Coatings

We provide the below nickel (Ni-Cu-Ni), black nickel (Ni-Cu-Ni-BlackNi), gold (Ni-Cu-Ni + Au), rubber and plastic coatings for our ring magnets. Our default coating is a 3-layer nickel-copper-nickel (Ni-Cu-Ni) plating to protect from moisture and corrosion, enhance durability and to give a nice smooth silver finish. Additional coatings such as epoxy (Ni-Cu-Ni + epoxy) and silver (Ni-Cu-Ni + Ag) available. See custom neodymium ring magnets for more details

Ring Magnet Magnetization Directions

We offer ring magnets in through thickness and diametric magnetization directions. Most of our ring magnets have axial magnetization through their thickness and the rest are diametrically magnetized across the round diameter of the magnet.

Ring Magnet General Information

Below are some common questions we get regarding ring magnets.

What is a ring magnet?

A ring magnet is a round disc magnet or cylinder magnet with a hole in the center. Ring magnets are also sometimes called donut magnets, hollow cylinder magnets or tube magnets.

What are ring magnets used for?

Ring magnets are used for many applications such as speakers, motors, sensors, craft, hobby and DIY. Countersunk magnets with a screw hole are an easy way to attach magnets to many surfaces and magnetic clasps ring magnets are great for making accessories.

Can you provide thin walled ring magnets?

It depends. Since neodymium magnets are made of a powder pressed under intense heat, they are somewhat brittle and also cannot be machined into complex shapes. This limits how thin ring magnets can be. If you require ultra-thin walled ring magnets, splitting the ring into multiple arc segment magnets may be a good option in order to reduce brittleness and chance of breakage during assembly.

Ring Magnet Specs

We provide detailed technical info and specifications for ring magnets on our neodymium magnet specs page and product specific features, downloads, drawings, magnetic field data and stats on individual product pages.

Strength Grades

Available in strength grades:

Heat Grades

Available in heat grades:

Sizes

Available in tiny sizes from 1/32" or about 0.8mm up to large 3" or about 75mm. Popular sizes like 1/4", 1/2", 3/4", 1", 2", many with countersunk holes. Use our magnet finder tool for metric equivalents.

Tolerances

Dimensional tolerances for all ring magnets are 0.004" or 0.1mm.

Pull Force

Magnet strength testing for all ring magnets was done with precision equipment. Use our free Magnet Strength Calculator to estimate pull force. Pull force may vary by use case.

Ring Magnet Applications

Ring magnets are used in a wide variety of applications from industrial, recycling, electronics to DIY projects and every day use. Common uses include: loudspeakers, headphones, microphones, electric motors, generators, magnetic couplings and more. Check out our applications categories, magnet uses page and blog to learn more about how neodymium ring magnets are used.

Neodymium Ring Magnets

1/4 x 1/4 Inch Neodymium Rare Earth Ring Magnet N42 R424

1/4 x 1/4 Inch Neodymium Rare Earth Diametric Ring Magnet N42 R424DIA

1/4 x 1/2 Inch Neodymium Rare Earth Ring Magnet N42 R428

3/8 x 3/8 Inch Neodymium Rare Earth Diametric Ring Magnet N42 R6036DIA

3/8 x 1/16 Inch Neodymium Rare Earth Ring Magnet N42 R621

3/8 x 1/8 Inch Neodymium Rare Earth Ring Magnet N42 R622

3/8 x 1/8 Inch Neodymium Rare Earth Countersunk Ring Magnet N42 (1 Pair) R622CS-P

3/8 x 1/8 Inch Neodymium Rare Earth Countersunk Ring Magnet N42 R622CS-S

3/8 x 1/8 Inch Neodymium Rare Earth Countersunk Ring Magnet N42 R622CS-N

3/8 x 1/4 Inch Neodymium Rare Earth Ring Magnet N42 R624

3/8 x 1/8 Inch Neodymium Rare Earth Countersunk Ring Magnet N52 (1 Pair) R622CS-P-N52

3/8 x 1/8 Inch Neodymium Rare Earth Countersunk Ring Magnet N52 R622CS-S-N52

3/8 x 1/8 Inch Neodymium Rare Earth Countersunk Ring Magnet N52 R622CS-N-N52

3/8 x 3/8 Inch Neodymium Rare Earth Ring Magnet N42 R636

1/2 x 1/32 Inch Neodymium Rare Earth Ring Magnet N42 R8201

1/2 x 1/16 Inch Neodymium Rare Earth Ring Magnet N42 R821

1/2 x 1/8 Inch Neodymium Rare Earth Ring Magnet N42 R822

1/2 x 1/8 Inch Neodymium Rare Earth Ring Magnet N52 R822-N52

1/2 x 1/8 Inch Neodymium Rare Earth Countersunk Ring Magnet N42 (1 Pair) R822CS-P

1/2 x 1/8 Inch Neodymium Rare Earth Countersunk Ring Magnet N42 R822CS-S