MP 25x13x4 / N38 - neodymium magnet
ring magnet
catalog number 030190
GTIN: 5906301812074
external diameter Ø
25
mm [±0,1 mm]
internal diameter Ø
13
mm [±0,1 mm]
height
4
mm [±0,1 mm]
magnetizing direction
↑ axial
capacity ~
2.96 kg / 29.03 N
magnetic induction ~
135.80 mT / 1,358 Gs
max. temperature
≤ 80
°C
catalog number 030190
GTIN: 5906301812074
external diameter Ø
25 mm [±0,1 mm]
internal diameter Ø
13 mm [±0,1 mm]
height
4 mm [±0,1 mm]
magnetizing direction
↑ axial
capacity ~
2.96 kg / 29.03 N
magnetic induction ~
135.80 mT / 1,358 Gs
max. temperature
≤ 80 °C
6.76 ZŁ gross price (including VAT) / pcs +
5.50 ZŁ net price + 23% VAT / pcs
bulk discounts:
need more quantity?Do you have a dilemma in choosing?
Call us tel: +48 22 499 98 98 or get in touch via contact form on the contact page. You can check the strength and the shape of magnet in our magnetic mass calculator force calculator
Orders placed by 2:00 PM will be shipped on the same business day.
Specification: ring magnet 25x13x4 / N38 ↑ axial
Magnetic properties of the material N38
Physical properties of sintered neodymium magnets Nd2Fe14B
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Advantages as well as disadvantages of neodymium magnets NdFeB.
Apart from immense strength, neodymium magnets have the following advantages:
- They do not lose their power (of the magnet). After approximately 10 years, their strength decreases by only ~1% (theoretically),
- They protect against demagnetization caused by external magnetic field very well,
- By applying a shiny coating of nickel, gold, or silver, the element gains an aesthetic appearance,
- They possess very high magnetic induction on the surface of the magnet,
- Magnetic neodymium magnets are characterized by very high magnetic induction on the surface of the magnet and can operate (depending on the shape) even at temperatures of 230°C or higher...
- Due to the option of accurate forming or adaptation to individual needs – neodymium magnets can be produced in various forms and dimensions, which amplifies their universality in usage.
- Wide application in the industry of new technologies – are used in HDD drives, electric drive mechanisms, medical devices or very modern machines.
Disadvantages of neodymium magnets:
- They can break when subjected to a powerful impact. If the magnets are exposed to impacts, we recommend using magnets in a steel housing. The steel housing in the form of a holder protects the magnet from impacts, and at the same time increases its overall strength,
- High temperatures can reduce the power of neodymium magnets. Typically, after heating above 80°C, most of them experience a permanent loss in strength (although it is dependent on the form and size). To prevent this, we offer special magnets marked with the symbol [AH], which are highly resistant to high temperatures. They can operate even at temperatures up to 230°C, making them an ideal solution for applications requiring high-temperature operation,
- Due to their susceptibility to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic, or other moisture-resistant materials when using them outdoors,
- The use of a cover - a magnetic holder is recommended due to the limited production capabilities of creating threads or complex shapes in the magnet
- Possible danger to health from tiny fragments of magnets can be dangerous, when accidentally ingested, which becomes significant in the context of child safety. Furthermore, miniscule components of these magnets are able to hinder the diagnostic process after entering the body.
Handle with Care: Neodymium Magnets
Neodymium magnetic are delicate and can easily crack and shatter.
Neodymium magnets are characterized by significant fragility. Neodymium magnetic are made of metal and coated with a shiny nickel, but they are not as durable as steel. At the moment of collision between the magnets, small metal fragments can be dispersed in different directions.
Keep neodymium magnets far from youngest children.
Remember that neodymium magnets are not toys. Do not allow children to play with them. In the case of swallowing multiple magnets simultaneously, they can attract to each other through the intestinal walls. In the worst case scenario, this can lead to death.
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.
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.
In the situation of placing a finger in the path of a neodymium magnet, in that situation, a cut or a fracture may occur.
Neodymium magnets can become demagnetized at high temperatures.
Despite the general resilience of magnets, their ability to maintain their magnetic potency can be influenced by factors like the type of material used, the magnet's shape, and the intended purpose for which it is employed.
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.
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, you can try wearing gloves or simply avoid direct contact with nickel-plated neodymium magnets.
Keep neodymium magnets away from people with pacemakers.
Neodymium magnets generate strong magnetic fields. As a result, they interfere with the operation of a pacemaker. This is because many of these devices are equipped with a function that deactivates the device in a magnetic field.
Under no circumstances should neodymium magnets be brought close to GPS and smartphones.
Neodymium magnets produce intense magnetic fields that interfere with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.
Neodymium magnets are the most powerful magnets ever created, and their power can shock you.
On our website, you can find information on how to use neodymium magnets. This will help you avoid injuries and prevent damage to the magnets.
In order to show why neodymium magnets are so dangerous, read the article - How very dangerous are powerful neodymium magnets?.
Tabela kosztu i czasu dostawy
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GLS kurier
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14.99 ZŁ
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12.30 ZŁ
Płatność przy odbiorze (pobranie):
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23.00 ZŁ
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