Ferrite Magnet - 75mm x 50mm x 20mm - 5kg Pull

This ferrite magnet, also known as a ceramic magnet, provides excellent value and high resistance ...

Best current price£9.99from B&Q

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B&Q - Y30Bh Ferrite Magnet For ArtsCraftsModel MakingDiyHobbiesOfficeAnd Home75mm X 50mm X 20mm Thick5Kg Pull
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eBayY30BH Ferrite Magnet for Arts, Crafts, Model Making, DIY, Pack of 1, Black
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Product Information

Full details

The FIRST4MAGNETS Ferrite Magnet is ideal for DIY enthusiasts, hobbyists, and industrial engineers requiring a durable, high-temperature magnetic solution. It offers a robust 5kg pull strength and exceptional resistance to corrosion and demagnetisation, making it perfect for demanding environments. While it provides excellent value and versatility, users should note that its rigid ceramic composition makes it brittle and susceptible to cracking if dropped or subjected to high-impact stress.

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BrandFIRST4MAGNETS

Extended Product Information

FAQs

Can these magnets be used outdoors?

Yes, because ferrite magnets are corrosion-resistant, they perform well in outdoor environments without rusting.

Can I drill holes into this magnet?

No, you should not attempt to drill into ferrite magnets. They are brittle and will shatter or crack during the drilling process.

What is the maximum temperature this magnet can handle?

It is rated for continuous use at temperatures up to 180 degrees Celsius.

Does this magnet have a North and South pole?

Yes, the poles are located on the two opposite 75mm x 50mm rectangular faces.

How do I secure the magnet to a non-magnetic surface?

The most effective method is using a strong structural adhesive, such as a two-part epoxy or a high-strength construction adhesive.

Are these safe to keep near electronics?

Strong magnets should be kept away from sensitive electronics, magnetic storage media, and medical devices like pacemakers.

Troubleshooting

The magnet is not holding the expected 5kg weight.

Ensure the magnet is in flush, direct contact with bare mild steel. Any gaps, paint, or debris will drastically reduce pull strength.

The magnet has developed a chip or crack.

If the crack is superficial, the magnetic performance is usually unaffected. Use a non-conductive epoxy to seal the chip and prevent further crumbling.

The magnet is difficult to remove from a surface.

Slide the magnet to the edge of the steel surface rather than pulling directly away; this 'peel' motion requires significantly less force.

Pros and Cons

Pros

  • High operating temperature threshold of 180°C
  • Excellent resistance to oxidation and corrosion
  • Highly cost-effective for bulk projects
  • Stable magnetic field strength over time

Cons

  • Brittle material can crack under impact
  • Moderate pull strength relative to its physical size
  • Lacks mounting holes, requiring adhesive or clamping

Setup, Compatibility & Care

To install, use a high-strength epoxy or mechanical clamp, as these magnets do not come with pre-drilled holes. When positioning, ensure the face with the correct polarity is oriented toward your target surface. Because ferrite is a ceramic material, avoid dropping the magnet onto hard surfaces or hitting it with metallic tools to prevent chipping. To clean, simply wipe with a dry or slightly damp cloth; the material does not require oil or specialized anti-rust treatments to maintain its integrity. When storing multiple magnets, use non-magnetic spacers between them to prevent them from snapping together, which could cause structural damage to the brittle material.

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