NdFeB Magnet

Your Professional NdFeB Magnet Supplier！

Established in 2003, Hesheng Magnetics is one of the earliest enterprises engaged in the production of neodymium rare earth permanent magnets in China. We have a complete industrial chain from raw materials to finished products.we have become the leader in the application and intelligent manufacturing of neodymium permanent magnets field ,after 20 years development,and we have formed our unique and advantageous products in terms of super sizes, magnetic Assemblies,special shapes, and magnetic tools.

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Why Choose Us

Customization Capabilities

With over 20 years of experience and continuous investment in technology, we support custom solutions including large-size magnets, complex shapes, and magnetic assemblies to meet specific application needs.

One-stop Solution

From raw materials to finished products, our complete in-house production chain ensures consistent quality, reliable lead times, and better cost control for long-term supply partnerships.

Our Certifications

Certified under ISO9001, ISO14001, ISO45001, and IATF16949, our production follows strict quality control systems.

Overview of NdFeB Magnet

NdFeB (Neodymium Iron Boron) magnets are the strongest type of permanent magnets commercially available, categorized within the rare-earth family. Composed mainly of Nd, Fe, and B (specifically ), they feature high magnetic strength, high coercivity (resistance to demagnetization), and high energy density. They are widely used in motors, electronics, and green energy applications.

Product Specification

We offers the following product specifications：

Product Name	Neodymium rectangular magnet For
Material	Neodymium Iron Boron Permanent Magnet
Size	Various kinds or according to customers' request
Tolerance in size	+/-0.05 mm
Direction of magnetism	Through the thickness or through the diameter
Applications (Neodymium rectangular magnet)	1.Electronic areas:speakers,headphones,acoustics,sensors and so on. 2.Motor areas: generators,servo motors,micro-motors,vibration motors,elevator motor and so on. 3.Clean Tech Energy: Water flow enhancement,wind turbines and so on. 4.Health care: MRI, medical treatment equipment and so on. 5.Other industries:electric doors and windows, electric vehicle, electric bicycles, computer, phone, boxes, magnetic tools, notebook and so on.

Product advantages

01/

Super Strong Magnetic Properties
NdFeB magnets have the highest known magnetic energy product (BHmax), which is several times higher than that of traditional ferrite and Alnico magnets. This means that, for the same volume or mass, they can generate a stronger magnetic field. They are widely used in applications with strict requirements on size and weight.

02/

Compact Size and Light Weight
Due to their extremely strong magnetism, NdFeB magnets can be made very small without compromising performance. This makes them an ideal choice for portable devices and compact systems, especially in new energy vehicle motor systems, where they help improve power density.

03/

Good Machinability
NdFeB magnets can be manufactured into complex shapes such as round, square, arc, and ring forms to meet various industrial design requirements.

04/

Wide Range of Applications
NdFeB magnets are widely used across industries, from consumer electronics to aerospace, and from medical equipment to new energy sectors. They are especially critical in wind power generation and new energy vehicles, where they serve as key components in high-efficiency permanent magnet synchronous motors.

Common types

Sintered NdFeB Magnet
Sintered NdFeB magnet is the product with the largest output and the most widely used in the NdFeB family. It is produced by the powder metallurgy method and can be divided into 7 series of N, M, H, SH, UH, EH and TH according to the different coercivity of the product.

Bonded NdFeB Magnet
Sintered NdFeB magnets are difficult to process into special shapes, and they are easy to crack, break, and difficult to assemble during the process. In order to solve these problems, people tried to crush the permanent magnets and mix them with adhesives, and then press them into a shape in a magnetic field. Thus, the bonded NdFeB magnet was developed.

Hot-Pressed NdFeB Magnet
Hot-pressed NdFeB magnets can achieve magnetic properties similar to sintered NdFeB without adding heavy rare earth elements. They have the advantages of high density, high orientation, good corrosion resistance, and high coercivity, but the mechanical properties are not good.

Consumer Electronics
In the electronics sector, NdFeB magnets are essential components in many devices we use daily. Computer hard drives rely on these magnets to control read/write heads precisely, enabling increasingly smaller storage devices without sacrificing performance.

Application

Transportation and Renewable Energy

The automotive industry has embraced NdFeB magnets as crucial to electric vehicle technology. Electric motors in hybrid and fully electric vehicles use these magnets for higher efficiency, reduced weight, and compact design.

Medical Equipment

The medical field has seen significant advances through NdFeB magnet applications. Magnetic Resonance Imaging (MRI) machines depend on these magnets to create powerful, stable magnetic fields necessary for producing detailed internal body images.

Industrial Applications

In industrial settings, NdFeB magnets serve crucial roles in sensors, motors, and separation systems. Manufacturing facilities use magnetic separators with NdFeB magnets to remove metal contaminants from production lines.

Manufacturing method

Neodymium magnets are made by a sophisticated process using very advanced metallurgical methods, the main process are: Rare earth raw materials - Quick curing - Strip casting - Hydrogen decrepitation - Milling - Pressing - Sintering - BH curve testing - Machining - Plating - Magnetizing - Packaging.

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Custom

Sizes & Shapes

We offer neodymium magnets in sizes from 0.010" to large assemblies, with standard shapes like discs, blocks, rings, and arc segments. Custom shapes can be made to your specs.

Grades & Coatings

Available in grades N35 to N52. To prevent corrosion, magnets are coated with options like Nickel (Ni-Cu-Ni), Gold, Chrome, Copper, Epoxy, Teflon, and Rubber/Plastic

Certifications

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Package & Delivery

Packing Details: Professional packages with white box, carton with foam and iron sheet to sheilding the magnetism during the transportation, which could be shipped by air and sea.
Delivery Details: 7-30 days after order confirmation.
We have special and contract price with DHL,FedEx,UPS and TNT.We have our own sea and air forwarder with rich experience for magnets deliver.Competitive price for freight cost to support.

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FAQ

Q: How strong are neodymium magnets?

A: Neodymium magnets are extremely strong for their size. They can lift thousands of times their own weight. The exact strength depends on the grade of the magnet, which can vary based on the manufacturing process.

Q: What are the grades of neodymium magnets?

A: Neodymium magnets come in different grades, such as N35, N42, N52, etc. These grades indicate the strength of the magnet. The higher the number, the stronger the magnet. Grades may also include letters after the number indicating temperature resistance.

Q: Can neodymium magnets be demagnetized?

A: Yes, like all permanent magnets, neodymium magnets can be demagnetized if exposed to high temperatures (above their Curie temperature), strong demagnetizing magnetic fields, or if they are physically damaged.

Q: Are neodymium magnets dangerous?

A: Neodymium magnets can be dangerous if not handled properly due to their strong magnetic force. They can snap together with great speed, potentially causing injuries or damaging the magnets. Small magnets also pose a swallowing hazard, which can be life-threatening.

Q: How do I separate two neodymium magnets?

A: Separating neodymium magnets, especially strong ones, can be challenging. It's often recommended to slide them apart rather than trying to pull them directly apart. Using a piece of plastic or wood as a lever can also help. Always wear protective gloves to avoid pinching.

Q: Can neodymium magnets affect electronic devices?

A: Yes, due to their strong magnetic fields, neodymium magnets can affect or damage sensitive electronic devices, such as smartphones, magnetic storage media like hard drives, and credit cards. Keep them at a safe distance from such devices.

Q: How long do neodymium magnets last?

A: Neodymium magnets can last for decades if they are kept in optimal conditions, not exposed to high temperatures, strong external magnetic fields, or physical damage.

Q: Can neodymium magnets be cut or drilled?

A: Neodymium magnets are very hard and brittle, making them difficult to cut or drill. Doing so requires special tools and techniques, and it should be done with caution to avoid cracking or shattering the magnet, as well as to protect from potentially hazardous dust.

Q: How are neodymium magnets made?

A: Neodymium magnets are manufactured through a complex process that includes melting the raw materials (neodymium, iron, and boron), casting them into ingots, pulverizing the ingots into powder, pressing the powder in a magnetic field to align the particles, sintering the pressed compact to fuse the particles, and then machining and coating the magnets to protect them from corrosion.

Q: Are you manufacturer or trading company?

A: We are manufacturer.

Q: What's your best delivery time?

A: Within 15-30 days.

Q: What is the quality control of your product?

A: Follow strictly quality control measures for implementation,

Q: Will your company provide free sample?

A: It depends on which sort of item you want to get. Some can be provided free of charge, however, the client shall assume the shipping fees himself.

Q: Is OEM open to clients?

A: Yes, we can provide both OEM and ODM service.

As one of the most experienced NdFeB magnet manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please rest assured to wholesale cheap NdFeB magnet for sale here from our factory. Customized orders are welcome.