Neodymium ring magnets for household, workshop or industry

The material neodymium is primarily known for its high energy density, which allows ring magnets to generate extremely strong attractive forces in the smallest of spaces. At the same time, they are characterised by a compact design and a long service life, which makes them ideal for numerous areas of application.
A neodymium ring magnet is a super magnet for almost any application. Most neodymium ring magnets are axially magnetised. However, there are also diametrically magnetised ring magnets. You can always recognise this directly from the magnetisation image. Buying magnets in our shop is fun

How much holding force do magnets with a hole have?

In our shop for super magnets, you will find a wide range of different sizes of ring magnets. The smallest and weakest ring magnet has a size of 6.0 mm x 2.0 x 2.0 mm. However, it can hold approx. 650 grams. The largest and strongest neodymium magnet with hole / ring magnet has a size of 70 mm x 30 mm x 10 mm and holds approx. 48 kg.

Application ideas for neodymium ring magnets 

We carry all common sizes of neodymium ring magnets in our shop. The hole in the centre makes for great mounting ideas. For example, with a rope through the magnet or hanging the ring magnet with a nail, or hanging it with a screw. You can also take a look at ring magnets with countersunk hole for screwing - with these magnets, the screw is countersunk exactly and the magnet counterpart can rest on the magnet. There are hardly any limits to the applications, so neodymium ring magnets can be found in electronics such as loudspeakers, sensors, medical devices, but also in craft projects and scientific experiments.

Material and properties of neodymium ring magnets

Neodymium ring magnets are known for their impressive magnetic force, which they owe to the physical properties of neodymium-iron-boron (NdFeB). This alloy enables an enormous energy density, which means that even small magnets can develop high attractive forces. Standard neodymium magnets lose their magnetic force at temperatures above 80°C. For higher requirements, we recommend ferrite magnets, which guarantee stability up to 250°C. Ferrite ring magnets are larger in diameter than neodymium ring magnets with the same adhesive force. In addition, neodymium magnets are mechanically sensitive and can break or splinter if handled improperly, which can limit their use in sensitive areas.

Coatings and protection

As neodymium ring magnets are susceptible to corrosion, they are often coated with protective layers such as nickel, zinc or epoxy resin. These coatings extend the service life and protect the magnets from environmental influences such as moisture. Especially in humid or corrosive environments - for example in mechatronics or outdoors - a suitable coating is crucial to maintain the functionality of the magnets.

Applications of ring magnets

Industrial applications

Ring magnets made of NdFeB are used in a wide range of industrial applications. Their high magnetic force and compact design make them ideal for use in electric motors, generators and sensors. In electric motors, they are used to create a strong and reliable magnetic field source that increases efficiency and performance. They are also used in speakers, as they generate precise vibrations and thus ensure clear sound quality.

Neodymium ring magnets also play a central role in medical technology and the automotive industry. They serve as key components in magnetic resonance imaging (MRI) scanners or as sensors in modern vehicles, for example to measure torques or positions.

Research and teaching

Teachers and scientists use neodymium magnetic rings for experiments and demonstrations of physical principles. They are perfect for clearly explaining topics such as magnetic fields, induction or magnetisation. With their high performance, they also enable complex scientific investigations to be carried out where precise magnetic fields are required.

DIY projects and creative ideas

Magnetic rings are a real all-rounder for hobbyists. They can be used in model making, art installations or as holders and fasteners. Thanks to their compact size and strong adhesive force, they are ideal for developing clever solutions for everyday use - such as magnetic knife holders, tool fasteners or decorative applications. If you have a clever idea for a DIY magnet project, take a look at our customer projects, where you have the opportunity to submit your project to us.

Differences between ring magnets and other magnet shapes

Comparison with disc, rod and block magnets

Ring magnets differ significantly in their shape and function from other magnet types such as disc, rod or cube magnets. While disc magnets are often used in flat applications, rod magnets are better suited for point magnetic fields. Cube or block magnets, on the other hand, offer a larger contact surface and are therefore suitable for applications where a larger holding surface is required.

The key advantage of ring magnets lies in their geometry: the hole in the centre enables easy mounting on shafts or screws, which makes them ideal for rotating systems such as electric motors or sensors. This makes them more versatile than other magnet shapes.

Advantages of ring magnets for specific applications

Ring magnets offer precise and targeted magnetic field control, as the magnetic field is evenly distributed around the central opening due to the shape. This makes them ideal for applications where precise magnetic field control is crucial. In addition, their high holding force means that they can be used with high performance even in smaller sizes, making them indispensable for compact technical devices.

In addition, their design enables easy integration into mechanical and electrical systems, as they can be easily fixed or mounted on axes. These properties set ring magnets apart from other types of magnets, especially in industry and technology.

 

The neodymium ring magnet FAQ

 

1. What are neodymium ring magnets? Neodymium ring magnets are powerful permanent magnets made from an alloy of neodymium, iron and boron. They are characterised by their high magnetic strength and resistance and have a ring-shaped structure.

2. How strong are neodymium ring magnets

Neodymium ring magnets are very strong and can hold many times their own weight. Their magnetic force is usually specified in kilograms. For example, a small ring magnet with a diameter of 10 mm and a height of 2 mm can hold over one kilogramme.

3. What is the best way to store neodymium ring magnets?

Neodymium ring magnets should be stored dry and at room temperature. The operating temperature should not exceed 80 degrees, otherwise they may lose their adhesive force. Keep them away from magnet-sensitive objects. It is also advisable to store them with spacers to prevent them from colliding.

4. Can neodymium ring magnets lose their magnetic force?

Neodymium ring magnets retain their magnetic force for many years as long as they are not exposed to extreme temperatures or strong magnetic fields. Temperatures above 80°C can impair the magnetic force.

5. Are neodymium ring magnets corrosion-resistant?

Neodymium ring magnets are usually coated with a protective layer of nickel, copper or epoxy resin to protect them from corrosion. Nevertheless, they should not be used in humid environments as the coating can be damaged.

6. Does MagnetMax offer discounts for bulk orders?

Yes, we offer discounts for bulk orders. Contact our customer service for more information and customised offers.  

7. Can I screw on the magnetic rings?

Yes, they are well suited for this. However, if the screw is to be countersunk, the rings with a countersunk hole are more suitable. The size of the countersunk hole depends on the size of the rings. "