MP 20x5x5 / N38 - ring magnet
ring magnet
Catalog no 030186
GTIN: 5906301812036
Diameter [±0,1 mm]
20 mm
internal diameter Ø [±0,1 mm]
5 mm
Height [±0,1 mm]
5 mm
Weight
17.67 g
Magnetization Direction
↑ axial
Load capacity
1.43 kg / 14.02 N
Magnetic Induction
275.98 mT
Coating
[NiCuNi] nickel
2.76 ZŁ with VAT / pcs + price for transport
2.24 ZŁ net + 23% VAT / pcs
bulk discounts:
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MP 20x5x5 / N38 - ring magnet
Magnetic properties of material N38
Physical properties of NdFeB
Shopping tips
Advantages as well as disadvantages of neodymium magnets NdFeB.
Besides their magnetic performance, neodymium magnets are valued for these benefits:
- They do not lose their power approximately 10 years – the reduction of lifting capacity is only ~1% (based on measurements),
- They show exceptional resistance to demagnetization from external magnetic fields,
- Thanks to the glossy finish and gold coating, they have an visually attractive appearance,
- They exhibit extremely high levels of magnetic induction near the outer area of the magnet,
- Thanks to their exceptional temperature resistance, they can operate (depending on the shape) even at temperatures up to 230°C or more,
- With the option for tailored forming and personalized design, these magnets can be produced in various shapes and sizes, greatly improving application potential,
- Significant impact in modern technologies – they are utilized in data storage devices, electric motors, clinical machines as well as high-tech tools,
- Thanks to their power density, small magnets offer high magnetic performance, with minimal size,
Disadvantages of rare earth magnets:
- They are fragile when subjected to a strong impact. If the magnets are exposed to mechanical hits, it is advisable to use in a metal holder. The steel housing, in the form of a holder, protects the magnet from breakage , and at the same time reinforces its overall resistance,
- They lose power at increased temperatures. Most neodymium magnets experience permanent reduction in strength when heated above 80°C (depending on the form and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
- Magnets exposed to damp air can oxidize. Therefore, for outdoor applications, it's best to use waterproof types made of coated materials,
- Using a cover – such as a magnetic holder – is advised due to the difficulty in manufacturing complex structures directly in the magnet,
- Safety concern related to magnet particles may arise, if ingested accidentally, which is important in the protection of children. It should also be noted that tiny components from these products can interfere with diagnostics when ingested,
- In cases of mass production, neodymium magnet cost may not be economically viable,
Precautions
Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.
Magnets attract each other within a distance of several to about 10 cm from each other. Remember not to put fingers between magnets or alternatively in their path when they attract. Depending on how large the neodymium magnets are, they can lead to a cut or a fracture.
Dust and powder from neodymium magnets are flammable.
Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. If the magnet is crushed into fine powder or dust, it becomes highly flammable.
Neodymium magnets are the strongest magnets ever created, and their strength can shock you.
Read the information on our website on how to properly utilize neodymium magnets and avoid significant harm to your body and unintentional disruption to the magnets.
If you have a nickel allergy, avoid contact with neodymium magnets.
Studies show a small percentage of people have allergies to certain metals, including nickel. An allergic reaction often manifests as skin redness and rash. If you have a nickel allergy, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.
You should keep neodymium magnets at a safe distance from the wallet, computer, and TV.
The strong magnetic field generated by neodymium magnets can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other devices. They can also damage videos, televisions, CRT computer monitors. Do not forget to keep neodymium magnets away from these electronic devices.
Do not give neodymium magnets to children.
Neodymium magnets are not toys. You cannot allow them to become toys for children. Small magnets pose a serious choking hazard or can attract to each other in the intestines. In such cases, the only solution is to undergo surgery to remove the magnets, and otherwise, it can even lead to death.
Keep neodymium magnets away from people with pacemakers.
Neodymium magnets generate very strong magnetic fields that can interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.
Neodymium magnets can demagnetize at high temperatures.
Despite the fact that magnets have been observed to maintain their efficacy up to temperatures of 80°C or 175°F, it's essential to consider that this threshold may fluctuate depending on the magnet's type, configuration, and intended usage.
Under no circumstances should neodymium magnets be brought close to GPS and smartphones.
Magnetic fields interfere with compasses and magnetometers used in navigation for air and sea transport, as well as internal compasses of smartphones and GPS devices.
Magnets made of neodymium are delicate as well as can easily break as well as get damaged.
In the event of a collision between two neodymium magnets, it can result in them getting chipped. Despite being made of metal as well as coated with a shiny nickel plating, they are not as hard as steel. In the case of a collision between two magnets, there can be a scattering of small sharp metal fragments in different directions. Protecting your eyes is essential.
Safety precautions!
Please see the article - What danger lies in neodymium magnets? You will learn how to handle them properly.