Disk Magnet

Your Professional Disk 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.

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 Disk Magnet

A disc magnet is a round, flat, coin-shaped permanent magnet where the diameter is greater than its thickness. Often made of neodymium for high strength, these versatile magnets are commonly used in motors, speakers, sensors, and everyday, household.

Product Specification

We offers the following product specifications：

Model	Diameter (mm)	Thickness (mm)	Magnet Grade	Remanence (Br)	Coating	Approx. Pull Force (kgf)*
ND35-D6T2	6.0	2.0	N35	1.17-1.21 T	Ni-Cu-Ni	0.8
ND35-D10T3	10.0	3.0	N35	1.17-1.21 T	Ni-Cu-Ni	2.3
ND35-D15T5	15.0	5.0	N35	1.17-1.21 T	Ni-Cu-Ni	5.5
ND35-D20T8	20.0	8.0	N35	1.17-1.21 T	Ni-Cu-Ni	12.0

Product advantages

01/

Strong Magnetic Strength: Neodymium magnets have magnetic properties that far exceed all other permanent magnet materials. They are known for their exceptional strength and can generate powerful magnetic fields.

02/

Wide Range of Grades: Neodymium disc magnets are available in a wide range of grades, ranging from N30 to N54. N54 is the highest grade available in the market, offering the strongest magnetic strength.

03/

Various Sizes and Shapes: Neodymium disc magnets come in a variety of sizes and shapes, including micro-sized discs measuring as small as 1mm diameter and larger cylinder magnets that can hold up to 30kgs. This wide range of options allows for versatility in different applications.

04/

High Temperature Resistance: Neodymium magnets can perform well in ambient temperatures. However, it is important to note that they have a temperature limit and should not be used above certain temperatures, typically around 80°C, to maintain their magnetic properties.

05/

Axial Magnetization: Neodymium disc magnets are typically magnetized axially, meaning the magnetic field runs through the thickness of the magnet, with each pole located on the flat surfaces of the disc. This magnetization orientation provides optimal magnetic strength.

06/

Durable and Corrosion Resistant: Neodymium disc magnets are sintered for optimal magnetic strength and can withstand various environmental conditions. They can be left uncoated or can be coated with finishes such as nickel (Ni-Cu-Ni) or gold (Ni-Cu-Ni-Au) plating to provide maximum protection against corrosion and oxidation.

Common Materials

Neodymium (NdFeB):

Neodymium magnets are made of an alloy of neodymium, iron, and boron, and they are known for their strong magnetic properties. They are available in a wide range of grades, including N35, N38, N42, N45, N48, N50, and N52.

Samarium-cobalt (SmCo):

Samarium-cobalt magnets are made of an alloy of samarium and cobalt, and they are known for their high temperature resistance and strong magnetic properties. They are available in a wide range of grades, including SmCo5 and SmCo26.

Ferrite (Ceramic):

Ferrite magnets are made of a type of ceramic material, and they are known for their low cost and good resistance to demagnetization. They are available in a wide range of grades, including C5, C8, and C10.

Application

Household and DIY Uses
Fridge magnets and organizers: Neodymium disc magnets stick well and hold papers, notes, and tools.
Crafts and DIY projects: They're perfect for creating custom closures, magnetic compartments, and even homemade gadgets.
Electronics and small appliances: You'll find them used inside speakers, sensors, and motors for reliable performance.

Industrial and Commercial Applications
Industrial holding magnets: Disc magnets hold metal parts firmly during manufacturing or assembly, saving time and boosting efficiency.
Automotive and machinery: Neodymium disc magnets are common in motors, generators, and sensors due to their high-grade neodymium strength.
Magnetic separators and filters: They help remove metal debris from materials, keeping equipment safe and efficient.

Educational and Innovative Uses
Science kits and experiments: Disc magnets help demonstrate magnetic fields and forces in classrooms.
Prototyping and innovation: Inventors and engineers often rely on these magnets for creating prototypes and testing new designs, thanks to their consistent magnetic pull force.
Magnetic therapy devices: Some wellness products use disc magnets, though it's always good to check science-based claims before use.

Customization

Custom Sizes:

From miniature components to large-scale blocks, we customize magnets to your exact dimensions.

Custom Grades:

Choose the perfect neodymium grade—N35 to N33AH—for the ideal balance of strength and performance.

Coating Option:

Nickel-plated, epoxy-coated, or Zinc-Plated—select the finish that best suits your application.

Precision Tolerances:

Advanced machining ensures every magnet meets the highest standards of accuracy and consistency.

Magnetization Directions:

Single-pole, multi-pole, or custom orientations—tailored to your project needs.

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: What are disc magnets typically used for?

A: Disc magnets are widely used in electronics, sensors, motors, medical devices, and holding applications due to their compact shape and strong magnetic force.

Q: What materials are commonly used for disc magnets?

A: The most common materials include neodymium (NdFeB), ferrite, and Alnico. NdFeB is preferred for applications requiring high magnetic strength in a small form factor.

Q: How do I choose the right grade of disc magnet?

A: The appropriate grade depends on your required magnetic strength, operating temperature, and application environment. Higher grades offer stronger magnetic performance but may vary in thermal resistance.

Q: What coatings are available for disc magnets?

A: Common coatings include nickel (Ni-Cu-Ni), zinc, epoxy, and gold. Coatings help protect against corrosion and improve durability, especially in humid or harsh environments.

Q: What is the typical temperature resistance of disc magnets?

A: Standard NdFeB disc magnets typically operate up to 80°C, while high-temperature grades can withstand up to 150°C or higher, depending on the material specification.

Q: Can disc magnets be customized?

A: Yes, disc magnets can be customized in terms of diameter, thickness, tolerance, coating, magnetic grade, and magnetization direction to meet specific application requirements.

Q: What is the difference between axially and diametrically magnetized disc magnets?

A: Axially magnetized magnets have poles on the flat faces, while diametrically magnetized magnets have poles on the curved sides. The choice depends on how the magnet will be used in the application.

Q: How strong are disc magnets compared to other shapes?

A: Disc magnets provide a concentrated magnetic field in a compact form, making them highly efficient for applications with limited space. However, strength also depends on size, grade, and air gap.

Q: Are disc magnets suitable for outdoor use?

A: Yes, provided they have appropriate coatings such as epoxy or other corrosion-resistant finishes. Proper material selection is essential for long-term outdoor performance.

Q: What tolerances can be achieved in production?

A: Typical tolerances are ±0.05 mm to ±0.1 mm, depending on size and manufacturing process. Tighter tolerances can be achieved for precision applications.

Q: How are disc magnets packaged for shipment?

A: Magnets are usually separated with spacers and shielded to prevent magnetic interference. Export packaging complies with air and sea transport regulations.

Q: Can disc magnets be used in high-speed motor applications?

A: Yes, especially NdFeB disc magnets are widely used in motors. However, proper bonding, coating, and temperature management are critical for reliability.

Q: What factors affect the price of disc magnets?

A: Pricing depends on material grade, size, coating, tolerance, order volume, and raw material costs. Custom specifications may also influence pricing.

Q: How do you ensure consistent quality?

A: Quality is ensured through strict raw material control, in-process inspections, magnetic performance testing, and compliance with international standards such as ISO systems.

Q: What information should buyers provide for a quotation?

A: Buyers should specify dimensions (diameter and thickness), material grade, coating, magnetization direction, quantity, and application requirements for an accurate quote.

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

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