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China Courage Magnet Manufacturer

14 Years High Performance Permanent Magnet Supplier & Factory


Magnetic encoder multipole ring magnet rotor 18 x 2.25 x 3.2 mm

Material:Injection molded ferrite

Shape:With hole/ring




Tolerance:+ / - 0.1 mm

Packing:Neutral packaging or specified requirements

Pull Force:No test

Delivery Time:10-18 days

Place Of Origin:Dongguan, Guangdong Province, China

Working Temperature:< 150 degrees Celsius

Magnetizing Direction:One sided axial 8 pole

Surface Magnetic Strength:About 700 gauss

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

This is a circular rotor magnet used for DC brushless motor magnetic encoders, with a single side 8-pole magnetization, which means only one side has strong magnetic strength (using side). The material is injection molded ferrite, made of ferrite magnetic powder and nylon, which is not fragile. The specifications are outer diameter 18mm, inner small hole diameter 2.25mm, and height 3.2mm, suitable for various robots, electrical appliances, and induction devices. There are many similar stock specifications, and there is a wide selection of magnetic poles, Support non-standard customization, welcome to inquire about samples and mass purchase.

Injection molding magnetic temperature characteristics;

The maximum usage temperature varies depending on the magnetic alloy powder and adhesive. For example, Nylon 6 or PPS grade ferrite powder can achieve satisfactory test results at 180 ° C. On the other hand, Nylon 12 will melt over 170 ° C, so it is not recommended to use at temperatures above 150 ° C. Regardless of the type of adhesive used, magnetic materials such as neodymium iron boron grades with a maximum magnetic energy product or intrinsic coercivity of 9500 ohms (760 kiloamperes per meter) will exhibit significant irreversible magnetic losses at temperatures exceeding 120℃. 

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 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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