MW 5x15 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010084
GTIN: 5906301810834
Diameter Ø [±0,1 mm]
5 mm
Height [±0,1 mm]
15 mm
Weight
2.21 g
Magnetization Direction
↑ axial
Load capacity
4.15 kg / 40.7 N
Magnetic Induction
610.03 mT
Coating
[NiCuNi] nickel
1.11 ZŁ with VAT / pcs + price for transport
0.90 ZŁ net + 23% VAT / pcs
0.80 ZŁ net was the lowest price in the last 30 days
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MW 5x15 / N38 - cylindrical magnet
Magnetic properties of material N38
Physical properties of NdFeB
Shopping tips
Moreover, even though neodymium is part of the strongest magnets, they are prone to corrosion in humid environments. For this reason, they are coated with a coating of epoxy to increase their durability. Interestingly that NdFeB neodymium magnets are about 13% lighter than SmCo magnets and, despite their power, are brittle, which requires special caution during their handling. Therefore, any mechanical processing should be done before they are magnetized.
In terms of safety, there are many recommendations regarding the use of these magnets. They should not be used in acidic, basic, organic environments or in solvents, and also in water or oil. Furthermore, they can damage data on magnetic cards and hard drives, although data deletion using a neodymium magnet is not always certain.
In terms of properties in different environments, neodymium magnets are sensitive to corrosion, especially in humid conditions. Therefore, they are often covered with coatings, such as nickel, to shield them from external factors and extend their lifespan. High temperatures exceeding 130°C can cause a reduction of their magnetic strength, although there are particular types of neodymium magnets that can withstand temperatures up to 230°C.
As for potential dangers, it is important to avoid using neodymium magnets in acidic environments, basic environments, organic or solvent environments, unless they are properly protected. Additionally, their use is not recommended in water, oil, or in an environment containing hydrogen, as they may lose their magnetic properties.
Advantages and disadvantages of neodymium magnets NdFeB.
In addition to their exceptional field intensity, neodymium magnets offer the following advantages:
- They retain their full power for around ten years – the loss is just ~1% (based on simulations),
- Their ability to resist magnetic interference from external fields is impressive,
- Because of the brilliant layer of silver, the component looks high-end,
- Magnetic induction on the surface of these magnets is impressively powerful,
- They are suitable for high-temperature applications, operating effectively at 230°C+ due to advanced heat resistance and form-specific properties,
- With the option for customized forming and precise design, these magnets can be produced in multiple shapes and sizes, greatly improving engineering flexibility,
- Wide application in cutting-edge sectors – they find application in hard drives, rotating machines, healthcare devices and other advanced devices,
- Thanks to their power density, small magnets offer high magnetic performance, in miniature format,
Disadvantages of rare earth magnets:
- They may fracture when subjected to a strong impact. If the magnets are exposed to shocks, it is suggested to place them in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from fracture and enhances its overall durability,
- They lose magnetic force at high temperatures. Most neodymium magnets experience permanent loss in strength when heated above 80°C (depending on the shape and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
- Magnets exposed to humidity can rust. Therefore, for outdoor applications, we advise waterproof types made of rubber,
- The use of a protective casing or external holder is recommended, since machining multi-axis shapes in neodymium magnets is difficult,
- Safety concern from tiny pieces may arise, when consumed by mistake, which is important in the protection of children. Furthermore, miniature parts from these magnets might interfere with diagnostics if inside the body,
- Due to expensive raw materials, their cost is considerably higher,
Handle with Care: Neodymium Magnets
It is important to maintain neodymium magnets out of reach from youngest children.
Neodymium magnets are not toys. Do not allow children to play with them. Small magnets can pose a serious choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing significant injuries, and even death.
Neodymium magnets are over 10 times more powerful than ferrite magnets (the ones in speakers), and their power can shock you.
Please review the information on how to handle neodymium magnets and avoid significant harm to your body, as well as prevent unintentional damage to the magnets.
Magnets made of neodymium are noted for being fragile, which can cause them to shatter.
Neodymium magnets are characterized by considerable fragility. Neodymium magnetic are made of metal and coated with a shiny nickel, but they are not as durable as steel. In the event of a collision between two magnets, there may be a scattering of fragments in different directions. Protecting your eyes is crucial in such a situation.
Avoid contact with neodymium magnets if you have a nickel allergy.
Studies clearly indicate a small percentage of people who suffer from metal allergies such as 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.
Neodymium magnets are primarily characterized by their significant internal force. They attract to each other, and any object that comes in their way will be affected.
Magnets attract each other within a distance of several to around 10 cm from each other. Remember not to insert fingers between magnets or alternatively in their path when they attract. Magnets, depending on their size, are able even cut off a finger or there can be a significant pressure or a fracture.
Neodymium magnets can become demagnetized at high temperatures.
In certain circumstances, Neodymium magnets can lose their magnetism when subjected to high temperatures.
Do not place neodymium magnets near a computer HDD, TV, and wallet.
Magnetic fields generated by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other similar devices. They can also damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.
Keep neodymium magnets as far away as possible from GPS and smartphones.
Magnetic fields can interfere with compasses and magnetometers used in aviation and maritime navigation, as well as internal compasses of smartphones and GPS devices. There are neodymium magnets in every smartphone, for example, in the microphone and speakers.
Dust and powder from neodymium magnets are 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.
Keep neodymium magnets away from people with pacemakers.
Neodymium magnets produce strong magnetic fields that can interfere with the operation of a heart pacemaker. Even if the magnetic field does not affect the device, it can damage its components or deactivate the entire device.
Caution!
In order for you to know how strong neodymium magnets are and why they are so dangerous, read the article - Dangerous powerful neodymium magnets.
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