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China Courage Magnet Manufacturer

14 Years High Performance Permanent Magnet Supplier & Factory


20mm x 3mm x Hole 5mm Ndfeb Countersunk Magnet Ring

Material:Sintered rare earth neodymium

Shape:Countersink/screw hole

Appearance:Silvery white

Grade:N35-N52 (M.H.SH.UH.EH.AH)


Tolerance:+ / - 0.05 mm

Packing:Normal packaging or customer requirements

Pull Force:No test

Delivery Time:10-15 days

Place Of Origin:Guangdong Province, China

Working Temperature:80-220 ℃

Magnetizing Direction:Thickness

Surface Magnetic Strength:Higher than 2500 gauss

  • Product Details
  • Why Choose Us
  • FAQs
  • Packing & Delivery

Like 8mm and 10mm counterbore magnets, 20mm diameter counterbore neodymium magnet rings are also commonly used and are very popular in the market. The main sample has an outer diameter of 20mm, a thickness of 3mm, and a hole of 5mm, which has strong tensile force. Customers in different industries have different requirements for the magnetic properties and surface treatment of counterbore ring magnets. Can you tell us the specific requirements you need, such as whether to pair magnetization, labeling, and which side is N-pole, We will provide a quotation according to your requirements.

The following are some characteristics and applications of circular counterbore neodymium magnets:

High magnetic performance: Neodymium iron boron is currently one of the most powerful commercial magnetic materials known, with excellent magnetic properties. A circular sunk neodymium magnet can generate a strong magnetic field with extremely strong suction.

Countersunk hole design: The center of the magnet is a countersunk hole, which allows it to be easily fixed in a specific position by screws or other fixing devices. Countersunk holes can also be used to cooperate with other components to achieve specific application requirements.

Multiple sizes and shapes: Circular countersunk neodymium magnets can be manufactured into different sizes and shapes as needed to adapt to different application scenarios. Common shapes include disks, cylinders, and rings.

Widely used: Circular countersunk neodymium magnets have been widely used in many fields. They are often used in electronic equipment, mechanical equipment, generators, magnetic clamping devices, magnetic adsorption devices, sound equipment, medical equipment, laboratory instruments, and other aspects.

Relevant articles are recommended;

Notes for customized rare earth countersunk magnets

Dongguan Courage Magnetoelectric Technology Co., Ltd. is a Chinese magnet manufacturer specializing in the production of strong neodymium magnets, ceramic ferrite magnets, motor multipole magnets. We have cooperated with many customers for many years, mainly for the following reasons:

1, We are good at processing high performance, high precision, high difficulty magnet, especially in the field of DC motor magnet, have strong professional knowledge, experience.

2, We have a professional production, sales, design team, based on the industry for more than 14 years.

3, We have advanced magnet production and testing equipment, according to customer requirements to design, production of special requirements of magnet products,

4. The company's products have passed SGS, ROHS, REACH certification and a complete ISO9001 quality management system, specializing in providing high-quality permanent magnet products to customers in various countries.

5. Experience in serving Western, Asian and North American companies, we also have close ties with other regions, fedex or DHL can deliver,

6, Even if our customers do not know much about magnets, we will help and provide accurate product solutions.

You may be interested;

Courage Magnet Manufacturer Magnet Testing Certificate & Report

You may be interested in these magnet problems (Q&A) ;

1、Could you give me some magnet samples?

Yes, we have magnets in stock to help you get samples as soon as possible.

2、How long will it take me to get a reply to your email or inquiry?

We will contact you as soon as possible within 12 hours.

3、Why don't the magnets on your company website say the price?

Magnets belong to functional products, most customers have different requirements for magnets, such as material, shape, performance, tolerance, temperature resistance, purchase quantity, etc., we can customize processing according to your requirements, so we need to clarify your specific needs and then give you a quote.

4、Do you guarantee the quality of your magnet products?

We have ISO,SGS and REACH certifications. If necessary, we can send you relevant materials.

5、May I come and visit your magnet factory?

Sure. We'll show you around our factory if you want.

6、What is your delivery time?

See if there is spot stock, if there is immediately can be arranged to send, if there is no need to process in 10-30 days or so, depending on what kind of magnet.

More Questions and Answers about Magnets:

Courage magnet manufacturer magnet packaging and delivery method:

China Courage magnet manufacturer magnet packaging and delivery method

The magnets we make are mainly delivered to you by sea or air. The packaging is generally neutral packaging, shielded packaging, vacuum packaging, pallets, etc., which can be packed according to your requirements.


a: Express (TNT, DHL, FedEx, UPS, etc.), air freight, sea freight.

b: The weight is less than 40Kgs. We suggest sending it to you by shield box.

c: It weighs between 40 kg and 100 kg. It can be expressed or shipped by air.

d: The weight is over 100 kg. We suggest sea transportation.

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