MP 25x5x27 / N38 - ring magnet
ring magnet
Catalog no 030192
GTIN: 5906301812098
Diameter [±0,1 mm]
25 mm
internal diameter Ø [±0,1 mm]
5 mm
Height [±0,1 mm]
27 mm
Weight
127.23 g
Magnetization Direction
↑ axial
Load capacity
7.7 kg / 75.51 N
Magnetic Induction
53.48 mT
Coating
[NiCuNi] nickel
47.18 ZŁ with VAT / pcs + price for transport
38.36 ZŁ net + 23% VAT / pcs
bulk discounts:
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MP 25x5x27 / N38 - ring magnet
Magnetic properties of material N38
Physical properties of NdFeB
Shopping tips
Advantages as well as disadvantages of neodymium magnets NdFeB.
In addition to their exceptional pulling force, neodymium magnets offer the following advantages:
- They virtually do not lose strength, because even after ten years, the performance loss is only ~1% (based on calculations),
- They show superior resistance to demagnetization from external magnetic fields,
- Because of the reflective layer of gold, the component looks visually appealing,
- They exhibit superior levels of magnetic induction near the outer area of the magnet,
- These magnets tolerate high temperatures, often exceeding 230°C, when properly designed (in relation to build),
- With the option for customized forming and targeted design, these magnets can be produced in numerous shapes and sizes, greatly improving application potential,
- Key role in modern technologies – they serve a purpose in data storage devices, electric motors, clinical machines along with technologically developed systems,
- Thanks to their concentrated strength, small magnets offer high magnetic performance, with minimal size,
Disadvantages of magnetic elements:
- They are fragile when subjected to a powerful impact. If the magnets are exposed to mechanical hits, it is suggested to place them in a metal holder. The steel housing, in the form of a holder, protects the magnet from breakage and additionally enhances its overall resistance,
- Magnets lose magnetic efficiency when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible field weakening (influenced by the magnet’s structure). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
- Due to corrosion risk in humid conditions, it is wise to use sealed magnets made of plastic for outdoor use,
- Using a cover – such as a magnetic holder – is advised due to the restrictions in manufacturing holes directly in the magnet,
- Possible threat from tiny pieces may arise, if ingested accidentally, which is crucial in the context of child safety. It should also be noted that small elements from these devices can complicate medical imaging when ingested,
- Higher purchase price is one of the drawbacks compared to ceramic magnets, especially in budget-sensitive applications
Be Cautious with Neodymium Magnets
Magnets are not toys, children should not play with them.
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 as far away as possible from GPS and smartphones.
Neodymium magnets are a source of strong magnetic fields that cause interference with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.
Make sure not to bring neodymium magnets close to the TV, wallet, and computer HDD.
Strong magnetic fields emitted by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. They can also damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.
Magnets made of neodymium are particularly fragile, resulting in damage.
Magnets made of neodymium are highly delicate, and by joining them in an uncontrolled manner, they will crumble. Neodymium magnetic are made of metal and coated with a shiny nickel, but they are not as durable as steel. At the moment of connection between the magnets, small metal fragments can be dispersed in different directions.
It is crucial not to allow the magnets to pinch together uncontrollably or place your fingers in their path as they attract to each other.
In the case of placing a finger in the path of a neodymium magnet, in that situation, a cut or even a fracture may occur.
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, you can try wearing gloves or simply avoid direct contact with nickel-plated neodymium magnets.
Dust and powder from neodymium magnets are highly flammable.
Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. Once crushed into fine powder or dust, this material becomes highly flammable.
Neodymium magnets are the strongest magnets ever invented. Their power can surprise you.
Familiarize yourself with our information to correctly handle these magnets and avoid significant swellings to your body and prevent disruption to the magnets.
Neodymium magnets should not be near 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 become demagnetized at high temperatures.
Even though 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.
Safety rules!
To show why neodymium magnets are so dangerous, see the article - How dangerous are very strong neodymium magnets?.