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Ring

AMF New Zealand stocks a wide range of ring magnets catering to all our customer needs including strong Neodymium magnets and reliable Ferrite magnets. Rare Earth ring magnets start from tiny magnets through to large diameter magnets such as the 100mm outer diameter magnet. Our variety of magnetic rings incorporates three different directions of magnetism including axial ring magnets, diametric ring magnets and radial ring magnets. Ring magnets are popular as they can be incorporated in manufacturing operations to assist in the precise movement and timing of machinery. Rare earth ring magnets have become common components of many electronic products including computers, audio equipment and phones.

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Ring

Ferrite Ring Magnets

Ferrite magnets, with their dull grey exterior, are what many people call to mind when they think of magnets. They are often our first introduction to magnets through our school years. Popular for their longevity, they can withstand high operating temperatures and have great resistance to corrosive elements like humidity. Ferrite ring magnets have been widely used for decades as a reliable means of holding or controlling moving parts inside a mechanical product. Ferrite ring magnets are used in magnetic holding devices, often housed in a steel casing which enhances the magnet power of the magnet. A simple example of this is a Ferrite Pot Magnet, these are ideal for outdoor applications. Ferrite magnets however are not as powerful as Neodymium magnets.

Neodymium Ring Magnets

Neodymium ring magnets are powerful and are able to provide a far superior holding capacity to that of a ferrite ring magnet of the same dimensions. Neodymium magnets are most commonly sold with a Nickel coating that lends the magnets a shiny silver appearance. Neodymium has a lower resistance to corrosive elements and to counter this they are often coated in Gold, Teflon or Parylene C in order to protect the magnet material inside. They are also brittle in nature and Neodymium magnets are often housed in steel, epoxy, rubber or plastic for applications that may cause an impact on the magnet.

Ring Magnets are highly versatile and used by many industries.

Ring-shaped magnets are one of the more adaptable and versatile shapes. The central hole allows the magnets to be easily fitted or mounted onto another object. Industrial manufactures are one of the heaviest users of ring magnets however they are also a key element of monitoring and sensing systems. Cordless tools use ring magnets to generate movement. Small ring magnets have seen a rise in popularity with product designers of many ilks as they provide a neat and almost imperceptible clasp. Bags, phone cases, boxes, cabinets and many more products utilise small neodymium ring magnets instead of traditional clips and clasps.

Ring magnets are the core element of Pot magnets which are very widely used in warehouses, construction worksites, factories and countless other workplaces that require reliable and heavy-duty holding power. Pot magnets come in a range of options including hooks, eyelets and male or female thread. Hold Pot magnets come in a wide range of sizes with the largest in-stock able to achieve a huge 1000kg pull force!

Find the right Ring Magnet for your application.

Here at AMF New Zealand, we are very happy to assist our customers with finding the right magnet. We know it can be tricking to find the best magnet for your application in our huge range. It's best to start by assessing the limitations of your applications - is space limited or is it a particular holding capacity that you require. Some of the key considerations include the size in both outer diameters, inner diameter and thickness. Depending on your application you may be restricted in the size of the magnet in one or all of these dimensions.


The grade of magnets is also a consideration, N35 is the lowest grade of Neodymium and N52 the highest. If your application will have moving elements it is important to consider a way to ensure your magnet is protected from impact as it will chip and crack. If you have any questions please don’t hesitate to contact our friendly team.

FAQs

What is a Ring magnet?
A ring magnet is a circular flat magnet with a central hole, otherwise known as a donut magnet. The central voice of the magnet ring allows for easy attachment to non-magnetic items.

How do Ring magnets work?
The standard magnet is magnetised axially, meaning the magnetic field is presented through the two flat faces. However, ring magnets are also available in radial and diametric magnetism. For more information about the direction of magnetism or any other technical aspects please take a look at our FAQ & Knowledge Base pages.

What are Ring magnets best used for?
Ring magnets are well known for their use in mechanical operations to control the steady and accurate movement of machinery parts. Often fitted onto a shaft or spindle, they help to guide equipment such as robotic arms or automated gates into the correct position. Magnetic rings are extremely adaptable and their void serves as an easy means of attaching the magnet to just about any item. Ring magnets can be stitched, glued, threaded or screwed onto objects to create a magnet hold.

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