N42 Neodymium Sphere Magnet - 19 mm - 4.4 kg
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B&Q - F19Sp-1 19 mm Diameter N42 Neodymium Sphere Magnet With 4.4 Kg Pull
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Product Information
Full details
Designed for artists, model makers, and hobbyists, these N42 neodymium sphere magnets offer a balance of aesthetic appeal and high-performance magnetic strength. They are perfect for creative structural displays or specialized industrial projects, though users must exercise caution due to their strong pull force and potential hazard to children or sensitive electronics.
All features
| Model Part Number | F19Sp-1 |
|---|---|
| Brand | B&Q |
Extended Product Information
FAQs
Can these magnets be drilled or cut?
No, neodymium magnets are brittle and should not be drilled, cut, or machined as they can crack and the dust is flammable.
Are these safe for children?
No, these are not toys. They represent a severe choking and internal injury hazard if swallowed.
What is the operating temperature limit?
These magnets are rated for operation up to 80°C. Exceeding this temperature will cause the magnet to lose its magnetic strength.
How do I store these safely?
Store them in a non-magnetic container and keep them away from sensitive electronics, steel tools, and other magnets.
What is the N42 grade?
N42 is a measure of the magnetic energy product, indicating a high level of magnetic strength suitable for most professional and hobbyist applications.
Troubleshooting
Magnets are stuck together too tightly to separate
Use a non-metallic wedge or a flat-edged tool to slowly slide the magnets apart horizontally, rather than pulling them vertically.
Magnet appears to have lost some strength
Check if the magnet was exposed to temperatures exceeding 80°C, which can cause permanent loss of magnetic properties; if so, the magnet will need to be replaced.
Pros and Cons
Pros
- High strength-to-size ratio
- Durable triple-layer protective coating
- Versatile spherical geometry for artistic projects
- Excellent resistance to oxidation
Cons
- High pull force can cause finger pinching
- Susceptible to demagnetization at temperatures above 80°C
- Brittle material can chip or shatter upon high-impact collision
Setup, Compatibility & Care
To ensure the longevity of your magnets, store them in a cool, dry place. While the nickel-copper-nickel plating is robust, avoid prolonged exposure to moisture or harsh chemicals to prevent surface degradation. When integrating these into a project, use non-magnetic adhesives or mechanical housings to hold them in place if the magnetic attraction alone is insufficient for your specific alignment. Always consult the provided safety data sheet before handling, especially if incorporating these magnets into consumer products that may be handled by others.