This section provides an overview for rare earth magnets as well as their applications and principles. Also, please take a look at the list of 24 rare earth magnet manufacturers and their company rankings. Here are the top-ranked rare earth magnet companies as of June, 2023: 1.Shin-Etsu Chemical Co., Ltd., 2.Adams Magnetic Products Co., 3.Toshiba Materials Co., Ltd..
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Rare earth magnets are permanent magnets composed mainly of rare earth elements.
There are several rare earth magnets, including neodymium magnets, samarium cobalt magnets, praseodymium magnets, and samarium magnets. Rare earth magnets are characterized by their far superior magnetic properties compared to ferrite magnets.
Rare earth magnets are used in many fields because of their small size and large magnetic force. Specifically, they are used in small magnetic sensors, small relays, small speakers, motor magnets, rotor parts, and rotor magnets in watches. In particular, the miniaturization of motors and other power sources has led to the miniaturization of products that use motors (e.g., robot arms). The use of rare earth magnets is expected to further advance in fields where product miniaturization and higher performance are required.
Rare earth magnets are characterized by their magnetic strength. Compared to ferrite magnets and alnico magnets, rare earth magnets have far superior magnetic properties. Their magnetic force is more than six times stronger than that of ferrite magnets. The characteristics of rare earth magnets vary depending on the type of rare earth element contained. Individual characteristics are described below:
Neodymium magnets have the strongest magnetic force among rare earth magnets. The main raw materials are neodymium and iron. Since neodymium raw materials are relatively abundant, the cost is comparatively low among rare earth magnets. It is a rust-prone material and is thus usually plated or coated.
Compared to neodymium magnets, the change (decrease) in magnetic force due to temperature is about 1/4 of that of neodymium magnets. It is suitable for maintaining stability at various temperatures (including high). Since it is a rust-resistant material, no plating or coating is required in normal use. It is a brittle material and care must be taken in its use and handling.
Praseodymium magnets are anisotropic rare earth magnets. It is characterized by high mechanical strength, with tensile strength more than three times that of neodymium magnets. There is no cracking or chipping. Machining is also relatively easy, and drilling and threading are possible.
*Including some distributors, etc.
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Adams Magnetic Products was founded in 1950 and is based in Elmhurst, Illinois. The company is an engineer and custom manufacturer of magnetic products serving aerospace, medical applications, packaging, green energy, data storage, and several other industries. The company’s product divisions include sheet& strip magnets, magnet assemblies, rare earth magnets, alnico, and ceramic magnets. Magnets can be coated and plated with materials such as epoxy, nickel, chrome, and vinyl. The company provides application and design engineering assistance, testing, CAD services, and product planning services for customers.
Industrial Magnetics Inc (IMI) was established in 1961 and is based in Boyne City, Michigan. IMI is a producer for magnetic products used in various industries such as fabrication, automotive, conveying, recycling, stamping, welding, mining & aggregate, and grain. Product offerings include magnetizers, demagnetizers, conveyor systems, magnetic conveying rail, manhole cover lift systems, raw magnetic material, lift devices, conveyor and pneumatic line magnets, magnetic inspection probes, as well as numerous magnetic tools.
Bunting was founded in 1959 and is headquartered in Newton, Kansas. The company is a family-owned manufacturer of standard and custom magnetic components for domestic and international customers from industries such as food processing, plastics, recycling, and mining. The company’s main product lines include magnetic separation, metal detection material handling equipment, printing products, and custom magnets & magnetic assemblies. Custom designs include materials such as ceramic ferrite, alnico, and samarium cobalt and are made for Halbach arrays, pump couplings, actuators, and other components.
Kinter (K International, Inc) is a US-based retail display hardware distributor and manufacturer that has been servicing retail businesses since 1980. At its current capacity, the products range from ceiling display systems and sign holders to cables, ladderless sign hanging systems, and fasteners. The option for custom design and manufacture is also available. The company's products are used to display a variety of goods, such as merchandise information, sale signs, and inventory.
Chemical Store Inc. is a Clifton, New Jersey-based chemical manufacturer and supplier that ships worldwide. The company has a division known as the Rosin Factory, which handles the production of its rosin, dried pine resin, products. Chemical Store’s products further range from salts, acids, and metal powders to waxes and lab supplies. The company’s customer base is varied, serving manufacturers, schools, hobbyists, and research laboratories. It provides several compliance certificates, such as Kosher, gluten-free, Non-GMO, vegan, and organic certificates for its products upon request.
Amtek Tool and Supply, Inc. based in Madison Heights, MI. Amtetk is an online super market for tools, supplies, and other hardware for individual, professional, and corporate customers. Product types include milling, threading, and turning devices, tooling systems, saws, broaching and deburring bits, cutting tool blanks and spares, abrasives, power tools, hand tools, safety equipment, measuring devices, lubrication, sanitation supplies, storage, pneumatics, shipping supplies, transmissions, and various other hardware and shipping supplies. Amtek’s online storefront offers precise filters to help find exact products to meet customer needs.
Sinotech is based in Portland, Oregon with offices in China. Sinotech is a distributor for custom-engineered electrical motors, motor components, and mechanical components manufactured in China. Sinotech’s motors include AC motors, DC motors, brushless DC motors, slotless high speed BLDC motors, stepper motors, cordless motors, gear motors, servo motors, and miniature motors. Motor components include laminations, wound coils, armature and field coils, brushes, and communicators. Mechanical components include assemblies, die castings, investment castings, sand castings, shafts, steamed metal parts, tubular metal parts, machined extrusions, plastic parts, rubber parts, and secondary processing.
Bunting Dubois began in 1959 as Bunting Magnetics, Co. in Chicago, Illinois as a magnet manufacturer. Today, the company is based in Bunting, Pennsylvania, has attained ISO 9001:2015 certification, and manufactures a full range of magnetics manufacturing with both ferrite and rare earth compounds for consumers around the world in industries spanning aerospace, automotive, medical, and industrial manufacturing. The company seeks to source magnetic material outside of China in conflict-free areas and performs 100% of manufacturing inside the United States. The company assists customers by providing engineering and application support to produce solutions, especially in the case of rare earth magnets.
Celduc Inc. through Celduc Transfo was founded in 1960 as a manufacturer of transformers. Celduc Inc. is based in, France. Celduc Inc. was officially created in 2020 and headquartered in Centerport, New York. Celduc creates electronics and customized products for industries including railway, plastic, packaging, medical, and electronics. Celduc’s main product lines include solid state relays, magnetic proximity sensors, reed relays & switches, and customized products. Customized products are versions of other products adapted for use in industries with special needs such as nuclear power, aircraft, and agriculture.
Ranking as of June 2023 in United States of AmericaDerivation Method
|1||Shin-Etsu Chemical Co., Ltd.||17.4%|
|2||Adams Magnetic Products Co.||15.2%|
|3||Toshiba Materials Co., Ltd.||15.2%|
|4||Hitachi Metals, Ltd.||10.9%|
|6||Advanced Technology & Materials Co., Ltd||6.5%|
|7||Magnetic Component Engineering, Inc.||4.3%|
|8||Industrial Magnetics, Inc.||4.3%|
|9||Hangzhou Tengye Magnetic Materials Co., Ltd.||2.2%|
|11||Applied Magnets Superstore||2.2%|
|12||Chemical Store Inc.||2.2%|
|13||Pacific PAC Technologies, Inc.||2.2%|
|16||Amtek Tool & Supply||2.2%|
Ranking as of June 2023 GloballyDerivation Method
|1||Shin-Etsu Chemical Co., Ltd.||16.7%|
|2||Adams Magnetic Products Co.||14.6%|
|3||Toshiba Materials Co., Ltd.||14.6%|
|4||Hitachi Metals, Ltd.||10.4%|
|6||Advanced Technology & Materials Co., Ltd||6.3%|
|7||Industrial Magnetics, Inc.||4.2%|
|8||Magnetic Component Engineering, Inc.||4.2%|
|9||Applied Magnets Superstore||4.2%|
|10||Radial Magnets Inc||2.1%|
|11||Pacific PAC Technologies, Inc.||2.1%|
|14||Amtek Tool & Supply||2.1%|
|16||Chemical Store Inc.||2.1%|
|17||Hangzhou Tengye Magnetic Materials Co., Ltd.||2.1%|
Derivation MethodThe ranking is calculated based on the click share within the rare earth magnet page as of June 2023. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.
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