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As the Canadian situation around COVID-19 evolves, we at Eclipse have continued to adapt our business operations to follow the recommendations of the Canadian government and health officials. The health and safety of our customers, employees, and community are our top priority at all times.

We will continue to operate but with modification. Our team is working hard to fulfill your orders and will continue to be available to answer your questions. Please feel free to reach out to us at any time.

Ferrite Disc Magnets

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Ferrite Disc Magnets

• 482°F; maximum operating temperature
• Excellent resistance to corrosion
• High resistance to demagnetisation

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Ferrite (Ceramic) Disc Magnets

Ferrite disc magnets are round coin-shaped ceramic ferrite magnets of varying diameter and thickness. The ferrite disc magnets are almost always manufactured as axially magnetised ceramic ferrite magnets. The thickness of the magnet is how axially magnetised magnets are Our ferrite disc magnets would be supplied as axially magnetised ferrite disc magnets unless we state otherwise.

We also supply fridge magnets which may have the same dimensions as some of the discs but they work differently. The ferrite discs have been magnetised along the central axis so the poles are at either end of the disc (a North on one side; a South on the other side). Ferrite fridge magnets are magnetised such that they have multiple magnetic poles on one flat circular face and the other side is magnetically dead - ferrite fridge magnets can clamp better when in direct contact but when there is an increasing gap the standard disc magnets will start to be better at clamping - the difference is due to the pole patterns (a wider / larger pole face clamps better through gaps; narrow poles clamp worse through gaps).

Improve Performance by Stacking Ferrite Magnets

Ferrite disc magnets can be stacked on top of each other to create taller magnets which can offer more potential performance (fridge magnets do not stack so productively). As the ferrite discs height increases the performance will also increase until extra height starts to give less benefit per magnet addition. Eventually the performance plateaus off as the height increases, at which point a larger diameter disc magnet may be needed if more performance is required. Starting with thinner magnets then increasing height is a good test method when you are unsure what performance and/or magnet size you require.

Ferrite disc magnets can be glued in place as required. They do not like being press fitted - too more compaction force risks breaking, chipping or shattering the magnets. The ceramic ferrite disc magnets give more pull force when attracting another magnet than when attracting a ferromagnetic (e.g. mild steel) part.

Unplated Ferrite Disc Magnets

The ferrite disc magnets are unplated as standard. It is possible to plate the ferrite disc magnets and to produce custom magnet shapes and even diametrically magnetised ferrite disc magnets upon request. We can also produce alternative grades of ferrite upon request - we supply custom magnets.

If you are in any doubt about the choice of ferrite magnet, its size or need technical assistance, please contact us. And if you need a quotation for higher quantities of ferrite or a custom ferrite magnet shape, please contact us.

For the maximum magnetic strength see our range of Neodymium (rare earth) magnets.