2 Poles AlNiCo Rotor Shaft Magnet

2 Poles AlNiCo Rotor Shaft Magnet

2-Poles AlNiCo Rotor Magnet 
Standard Size:0.437″Dia.x0.437″, 0.625″Dia.x 0.625″, 0.875″Dia.x 1.000″, 1.250″Dia.x 0.750″, 1.250″Dia.x 1.375″, 2.120″Dia.x2.060″
Number of Poles: 2
Alnico Rotor Magnets are designed with multiple poles, each pole alternates in polarity. The hole in the rotor is designed for mounting on to shafts. They are excellent for use in synchronous motors, dynamos and air turbine generators.

- Alnico rotor magnets are made with Alnico 5 material and have a maximum temperature of approximately 1000°F.
- They are supplied un-magnetized unless otherwise requested. Magnetization after assembly is required to gain the full benefits of these magnets.
- We provide a magnetization service for assemblies incorporating these magnets.

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magnet ningbo

Alnico magnets are known for their hardness and brittleness, making them prone to chipping and cracking. Special machining techniques are required to work with this material. They typically require magnetizing fields of about 3kOe (kilo Oersted) to achieve their desired magnetic properties. Due to their relatively low coercivities, it is important to avoid exposing alnico magnets to repelling fields, as this can partially demagnetize them.

To prevent partial demagnetization, magnetized magnets should be stored with "keepers". If alnico magnets do become partially demagnetized, it is possible to easily remagnetize them. One advantage of cast alnico is its ability to be shaped into intricate and complex forms, which is not possible with other magnetic materials. An example of an alnico application is an alnico rotor assembly with a protected steel sleeve and epoxy potting.

2 poles Alnico Rotor Magnet

Alnico magnets are mainly composed of aluminum, nickel, cobalt, copper, iron, and sometimes titanium. Compared to other magnetic materials, alnico magnets have high magnetic flux density, resistance to corrosion, and excellent temperature stability, with a maximum working temperature of up to 600℃. Alnico magnets find wide usage in various applications such as sensors, meters, electronics, instruments, medical instruments, teaching, automobiles, aviation, martial arts, and more.


With a glorious history of more than ten years, Honsen Magnetics occupies a central position in the field of permanent magnets, magnetic components, and magnetic products. Our experienced team has valuable expertise in carefully planning an integrated production process covering machining, assembly, welding, and injection molding. This solid foundation has enabled us to offer a range of products that have not only caused a sensation in the European and American markets but also earned acclaim for their superior quality and affordable prices. Our unwavering focus on customer satisfaction allows us to build lasting partnerships resulting in a large satisfied client base.  Honsen Magnetics is more than a manufacturer, it is a manufacturer. We are a conduit for magnetic innovation, dedicated to shaping a world of magnetic possibility.


- More than 10 years of experience in the permanent magnetic products industry

- Over 5000m2 factory is equipped with 200 advanced Machines

- Have a strong R&D team can provide perfect OEM&ODM service

- Have the certificate of ISO 9001, IATF 16949, ISO14001, ISO45001, REACH, and RoHs

- Strategic cooperation with the top 3 rare blank factories for raw materials

- High rate of automation in Production & Inspection

- Pursuing product consistency

- We only export qualified products to customers

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Our company is committed to providing customers with proactive support and cutting-edge, competitive products that strengthen our market position. Through continuous technological innovation, we aim to achieve growth and new market expansion driven by unique breakthroughs in permanent magnets and components. Under the direction of our chief engineer, our experienced R&D department draws on in-house expertise, maintains customer contacts, and anticipates market trends. Independent teams oversee projects across the globe, ensuring that our research efforts are constantly progressing.



Quality management is woven into the very essence of our business. We see quality as the driving force and compass of our organization. Our commitment goes beyond the surface - our quality management system is intricately integrated into our operations. This ensures that our products consistently meet and exceed customer expectations, instilling trust through excellence.



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