18 Bonded Magnet Manufacturers in 2024
This section provides an overview for bonded magnets as well as their applications and principles. Also, please take a look at the list of 18 bonded magnet manufacturers and their company rankings. Here are the top-ranked bonded magnet companies as of April, 2024: 1.GMB DEUTSCHE MAGNETWERKE GmbH, 2.DEXTER MAGNETIC TECHNOLOGIES, 3.MMC Magnetics Corp.
Table of Contents
What Is a Bonded Magnet?
A bonded magnet is a generic term for magnets that are created by mixing fine-grained magnets into rubber or plastic, then processing and molding them.
Regular ferrite magnets are used as door seals for refrigerators and showcases, or they are turned into boards and coated with plastic to create whiteboards.
Rare earth magnets with high magnetic force, such as neodymium magnets, are molded into various shapes and used in industrial applications, including small motors, electronic components, and train drive motors.
Uses of Bonded Magnets
Bonded magnets offer the flexibility of design, manufacturing, processing, and molding after production.
Ferrite magnets are commonly used in daily life for applications such as magnetic tape and magnetic sheets. They are also used in refrigerator doors and whiteboards.
Highly magnetic magnets like neodymium magnets and samarium iron nitride magnets are incorporated into small motors, used in hard disks, and play a role in drive motors for automobiles, trains, and elevators.
Principles of Bonded Magnets
Permanent magnets used in industries are categorized as cast, sintered, or bonded magnets.
Bonded magnets, also known as polymer bonded magnets, are produced by mixing and dispersing a high concentration of fine magnetic powder (magnetic powder) from ferrite magnets or rare earth magnets into a binder like polymer resin or rubber.
After production, they can be processed and molded into complex structures with high precision. They not only exhibit excellent mechanical properties, such as resistance to cracking and chipping, but they can also be easily integrated with thin, long, and wide metals, which is impossible with cast or sintered magnets.
Bonded magnets can be mass-produced and offer many advantages as industrial materials.
In particular, the use of highly magnetic rare earth magnets is essential for small motors and electronic components widely used today. Improving the performance of bonded magnets themselves can achieve further miniaturization and efficiency.
Rare earth-bonded magnets also contribute to making generators smaller and more powerful, with potential for expanding their use in the field of energy generation.
Differences Between Bonded Magnets and Sintered Magnets
Bonded magnets are created by solidifying magnetic powder with resin, while sintered magnets are made by compressing magnetic powder and baking it at high temperatures.
In terms of magnetic properties and heat resistance, sintered magnets outperform bonded magnets made with resin, as the resin in bonded magnets is non-magnetic.
However, when it comes to dimensional accuracy, bonded magnets excel due to their ability to undergo more complex processing. Sintered magnets are subject to more significant sintering shrinkage during manufacturing.
Bonded Magnets and the Advancement of Motors
As environmental concerns grow, the motor market is undergoing significant changes. Motors are widely used in various applications, including automobiles and household appliances, and they account for a large portion of total power consumption. Energy conservation in motors is crucial for achieving a low-carbon society.
In this context, the demand for permanent magnet (PM) motors is rising.
PM motors, which utilize permanent magnets in the rotor, are more energy-efficient and effective than non-permanent magnet motors (e.g., induction motors) because they do not generate losses in the rotor. PM motors do not have secondary current flow in the rotor, making them more efficient.
PM motors come in two types based on rotor structure: Surface Permanent Magnet (SPM) motors and Interior Permanent Magnet (IPM) motors. IPM motors, with embedded magnets, can achieve higher speeds and enhanced mechanical safety.
Strong rare earth magnets play a vital role in the technology of these PM motors. However, the procurement of rare earth magnets has posed challenges due to soaring prices and unstable supply caused by export restrictions in China and other factors.
In recent years, new technologies have emerged, including the use of bonded magnets made from samarium, which are not rare earth magnets, in IPM motors. Bonded magnets are supporting the evolution of motors.
List of 18 Bonded Magnet Manufacturers
*Including some distributors, etc.
Sort by Features
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- Company Size: largest first
- Year Founded: oldest first
- Year Founded: earliest first
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- United States of America
- China
- Germany
- India
- Japan
- Poland
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The Electrodyne Company, Inc.
Bonded Magnets
Manufacturer Overview
The Electrodyne Company, based in Ohio, USA, is a manufacturer of magnetic products and related components. The company produces flexible magnets, rigid rare earth magnets, and magnetizing equipment. Its flexible magnets are available in three forms: ferrite magnet sheets, ferrite magnetic strips, and ferrite magnet die-cut shapes. These magnets are adaptable and economical. It is made of rubber-bonded strontium ferrite and can be bent, twisted, and flexed without losing its magnetic energy. The company serves in various industries including automotive, consumer electronics, industrial equipment, medical devices, appliances, and more. The company holds the ISO9001:2015 certification for quality management systems.
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DEXTER MAGNETIC TECHNOLOGIES
BONDED NEODYMIUM IRON BORON MAGNETS
Manufacturer Overview
DEXTER MAGNETIC TECHNOLOGIES, a renowned manufacturer of magnetic solutions, was established in 1951 in the United States. The company excels in producing an array of magnetic products, including precision magnetic assemblies and custom magnets. With a calling to innovation, DEXTER MAGNETIC TECHNOLOGIES has maintained a pioneering stance in magnetic technology advancement. Their expertise lies in offering cutting-edge magnetic solutions across industries like aerospace, medical, and automotive, resulting in elevated performance and efficiency. DEXTER MAGNETIC TECHNOLOGIES shines in devising tailored magnetic answers to address distinctive challenges. Notably, their precision magnetic assemblies play a crucial role in medical imaging equipment, ensuring precise diagnosis.
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MMC Magnetics Corp
Bonded Magnets
Manufacturer Overview
MMC Magnetics Corp., based in the USA, is a manufacturer and supplier of magnets and related components. The company produces magnets, magnetic components, and magnetic assemblies. Its product portfolio includes permanent magnets, magnetic assemblies, flexible and bonded magnets, and high-temperature magnets. The company offers various types of permanent magnets, including neodymium magnets, samarium magnets, alnico magnets, and ceramic magnets. These magnets find applications across numerous industries. The company serves a diverse range of industries, including aerospace, automotive, computer, medical, and commercial programs.
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Bunting-DuBois
Bonded Magnets
Manufacturer Overview
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.
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Alliance LLC
Bonded Magnets
Manufacturer Overview
Alliance LLC is a supplier of permanent magnets and a manufacturer of customized magnetic assemblies for the automotive, industrial, medical, alternative energy, and communication industries. The company has several locations in the US, including Indiana, Kentucky, California, and Texas, and one outside the US, Mexico. Additionally, the company has ISO9001:2015 certification, and all suppliers within the Alliance LLC group are certified with ISO14001 Environmental Standards. Alliance LLC offers various neodymium discs and blocks for developmental and prototype projects. In addition to manufacturing custom designed magnetic assemblies, the company also has an extensive inventory of Ferrites, NdFeB, and Bonded magnets.
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Arnold Magnetic Technologies
Bonded Magnets
Manufacturer Overview
Arnold Magnetic Technologies is a manufacturer of magnets, magnetic assemblies, and precision thin metals based in New York since 1895. The company deals in permanent magnets, flexible composites, electromagnets, magnetic assemblies, and precision thin metal foils. The permanent magnets, such as L-Type Laminated ones have various applications in the aerospace, automotive, motorsport, and industrial markets. Similarly, alloy strips and foils are used in industries that need to improve the power density of motors, transformers, and batteries. The composite sheets and strips are used for X-ray and gamma-ray radiation absorption, and RFI/EMI shielding and electromagnets are vital for defense projects.
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CITIZEN FINEDEVICE CO.,LTD.
bonded neodymium magnet
Manufacturer Overview
CITIZEN FINEDEVICE CO., LTD. is a Japanese manufacturer headquartered in Fujiyoshida, Yamanashi. It was established in 1959 through the merger of three Japanese companies: Citizen Miyota Co., Ltd., Citizen Finetech Co., Ltd., and Citizen Seimitsu Co., Ltd. The company specializes in precise metal parts for automobiles and other products, including quartz oscillators and ceramic components. Production processes are supported by various technologies, such as precise metal part machining, thin-film technology, and sealing technology, catering to different applications. Since 2019, CITIZEN FINEDEVICE, along with its holding company CITIZEN Group, has actively implemented Responsible Minerals Procurement Policy and Environmental Policy.
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Daido Steel Co., Ltd．
NITROQUENCH
Manufacturer Overview
Daido Steel Co., Ltd., originally founded in 1916 in Japan, is a manufacturer of alloy and tool steels. The company offers a wide range of products that include mechanical construction steels, superalloys used in engine components, welding wires, alloy powders, and permalloy foil. Daido Steel Co., Ltd.'s specialty steel products are used in the automotive parts, industrial machinery parts, electrical machinery parts, and welding markets. The company has diversified to include businesses in real estate, insurance, and the provision of welfare services and has expanded operations outside of Japan in North America, Asia, and Europe.
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GMB DEUTSCHE MAGNETWERKE GmbH
Plastic-bonded-magnets
Manufacturer Overview
GMB Deutsche Magnetwerke GmbH, based in Germany, has been a manufacturer of custom-designed cast and finished Aluminum-Nickel-Cobalt magnets since 1996. The company offers various magnets including AlNiCo (Aluminum-Nickel-Cobalt) magnets, magnetic assemblies, neodymium-iron-boron magnets, samarium-cobalt magnets, hard-ferrite magnets, and plastic-bonded magnets. The company's magnets find use in mechanical engineering, chemical industry, medicine and laboratory technology, electrotechnology, jewelry and toy industry, and office technology and advertising industry. Its AlNiCo magnets are known for its strong magnetic properties and ability to withstand high temperatures, making them suitable for a diverse set of uses.
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Dailymag Magnetic Technology
Bonded NdFeB Magnet
Manufacturer Overview
DailyMag Magnetic Technology, established in 2005, and based in Ningbo, China, is a manufacturer and supplier of professional magnets and tools. The product portfolio includes permanent magnets, magnetic assemblies, sharps containers, magnetic equipment, linear actuators, and magiko. The company also offers product development with innovation and high-performance technology. The products are used in various applications which include magnetic separators, torque drives, magnetos, generators, alternators, eddy current brakes, motors, meters, and other applications.
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Tengye Magnetic
Plastic Bonded Neodymium Magnets
Manufacturer Overview
Hangzhou Tengye Magnetic Materials Co., Ltd., founded in 2014, is a professional manufacturer of custom magnets, based in China. The company’s main products include permanent magnets and various magnetic solutions. These products are used by tech companies worldwide, helping them succeed in their projects. Its expertise spans different magnet materials and applications, as well as sales, technical consultation, and project management. It continues to solving magnet-related challenges by leveraging its extensive knowledge and experience in magnetics, plastics, metals, and other materials such as adhesives. Its advanced tools enables precise measurements and analysis, ensuring that every magnetic solution meets the highest standards.
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Ashvini Magnets Pvt. Ltd.
Bonded Magnets
Manufacturer Overview
Ashvini Magnets, established in 1986, is a manufacturer of injection molded magnets and magnetic assemblies based in India. The company has comprehensive end-to-end capabilities for manufacturing Injection Bonded Molded Magnets and holds an ISO9001:2008 certification. The company's product range includes ferrite-bonded magnets, hybrid-bonded magnets, rare earth-bonded magnets, insert-molded magnets, and over-molded magnets. Its comprehensive range of products caters to various application requirements across industries. Clients typically engage the company's manufacturing capabilities and expertise in the field of injection molded magnets.
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Evitron
Plastic Bonded Magnets
Manufacturer Overview
Evitron, established in 2013, is a manufacturer and supplier of plastic-bonded magnets based in Poland. Its product range includes plastic bonded magnets, plastic parts, injection molding manufacturing, magnetic compounds, magnetic simulators, and metalwork. The company specializes in injection molding, a precise, efficient manufacturing process for producing plastic parts and components. Its magnetic solutions are used in a range of industries, and its client base includes companies from Europe, North America, and Asia.
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HGT Advanced Magnets Co.,Ltd
Bonded NdFeB Magnets
Manufacturer Overview
HGT Advanced Magnets Co., Ltd. is a manufacturer and supplier based in China, specializing in rare earth magnets. The company manufactures rare earth magnets, which are known for its strong magnetic properties. These magnets are essential components in various industries due to its performance. The company's product range includes sintered neodymium magnets, sintered SmCo (Samarium Cobalt) magnets, and bonded neodymium magnets. Additionally, the company offers magnets in various grades. Its magnets are utilized in various applications, including industrial machines, consumer electronics, automobiles, communications, and more.
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Shin-Etsu Chemical Co., Ltd.
N Series
Company Overview
Shin-Etsu Chemical Co., Ltd., founded in 1926 in Japan, is a manufacturer and distributor of synthetic chemicals and electronic materials, such as semiconductor silicon and rare earth quartz. The company offers a wide range of products, including silicone sealants and rubbers, as well as cellulose derivatives used in foods and pharmaceuticals, and rare earth magnets. The company has four core business segments, including infrastructure chemicals, electronics materials, silicone-based functional agents, and specialized engineering for the development of plant design, construction, and maintenance.
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Sagami Chemical Metal Co., Ltd.
Neodymium Bonded Magnets
Company Overview
Founded in 1968, Sagami Chemical Metal Co., Ltd. is a Japanese manufacturer and distributor headquartered in Sagamihara, Kanagawa, specializing in permanent magnets. Rare-earth magnets, the strongest permanent magnet, are offered under the NEOFLUX lineup, comprising neodymium magnets that retain magnetism even with size and weight reduction. The company also provides samarium-cobalt magnets, a type of rare-earth magnets which is resistant to rust and high temperatures. Other product offerings include cast magnets, neodymium magnets, made from plastics and metal powder for flexible shaping, as well as corrosion-resistant ferrite magnets. Furthermore, the company offers magnet-based products such as vibration motors for mobile phones.
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Daido Electronics
Isotropic polymer bonded Nd-Fe-B magnets
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Bonded Magnet Manufacturer Ranking
*Including some distributors, etc.Ranking as of April 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | GMB DEUTSCHE MAGNETWERKE GmbH |
18.6%
|
| 2 | DEXTER MAGNETIC TECHNOLOGIES |
14.0%
|
| 3 | MMC Magnetics Corp |
14.0%
|
| 4 | Evitron |
9.3%
|
| 5 | The Electrodyne Company, Inc. |
7.0%
|
| 6 | Dailymag Magnetic Technology |
4.7%
|
| 7 | Bunting-DuBois |
4.7%
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| 8 | Shin-Etsu Chemical Co., Ltd. |
4.7%
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| 9 | Magna Co., Ltd. |
4.7%
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| 10 | Ashvini Magnets Pvt. Ltd. |
2.3%
|
Derivation Method
The ranking is calculated based on the click share within the bonded magnet page as of April 2024. 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.Number of Employees
- Shin-Etsu Chemical Co., Ltd.: 24,954
- Daido Steel Co., Ltd．: 12,605
- Magna Co., Ltd.: 30
Newly Established Company
- Dailymag Magnetic Technology: 2005 (19 years ago)
- GMB DEUTSCHE MAGNETWERKE GmbH: 1996 (28 years ago)
- Magna Co., Ltd.: 1984 (40 years ago)
Company with a History
- Daido Steel Co., Ltd．: 1916 (108 years ago)
- Shin-Etsu Chemical Co., Ltd.: 1926 (98 years ago)
- DEXTER MAGNETIC TECHNOLOGIES: 1951 (73 years ago)
Bonded Magnet Manufacturers in United States
*Including some distributors, etc.
- The Electrodyne Company, Inc.
- DEXTER MAGNETIC TECHNOLOGIES
- MMC Magnetics Corp
- Bunting-DuBois
- Alliance LLC
- Arnold Magnetic Technologies
Global Distribution of Bonded Magnet Manufacturers by Country
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
United States of America
|
6 | 35.3% |
Japan
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5 | 29.4% |
China
|
3 | 17.6% |
Germany
|
1 | 5.9% |
India
|
1 | 5.9% |
Poland
|
1 | 5.9% |
List of Bonded Magnet Products
11 products are listed.
Daido Electronics
Equel SMFEN Bond magnet Nitroquench-P
10+ people viewing
It is an anatomic bond magnet in which the SM-FE-based alloy is made into a powder having a fine crystal grain by an ultra-cooling method, and a SM...
Magna Co., Ltd.
Bond magnet cylindrical shape
Neojibond magnet is a plastic magnet that combines (complex) ultra-cold flour (ND-FE-B) with neodymium, iron (ND-FE-B). Press processing of thin s...
Neo Mag Co., Ltd.
Complex shape / thin shape is possible neodymium bond magnet ring type
Features ■ Magnetized metal magnetic powder that solidifies plastic Neodim bond magnets (neodymium plastic magnets) are similar to the composition ...
Neo Mag Co., Ltd.
Complex shape / thin shape is possible Neodim bond magnet columnar type
Features ■ Magnetized metal magnetic powder that solidifies plastic Neodim bond magnets (neodymium plastic magnets) are similar to the composition ...
