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MW 45x15 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010070

GTIN: 5906301810698

Diameter Ø [±0,1 mm]

45 mm

Height [±0,1 mm]

15 mm

Weight

178.92 g

Magnetization Direction

↑ axial

Load capacity

37.32 kg / 365.98 N

Magnetic Induction

343.84 mT

Coating

[NiCuNi] nickel

61.84 ZŁ with VAT / pcs + price for transport

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MW 45x15 / N38 - cylindrical magnet

Specification/characteristics MW 45x15 / N38 - cylindrical magnet

properties

values

Cat. no.

010070

GTIN

5906301810698

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

45 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

178.92 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

37.32 kg / 365.98 N

Magnetic Induction ~ ?

343.84 mT

Coating

[NiCuNi] nickel

Manufacturing Tolerance

± 0.1 mm

Magnetic properties of material N38

properties

values

units

coercivity bHc ?

860-915

kA/m

coercivity bHc ?

10.8-11.5

kOe

energy density [Min. - Max.] ?

287-303

BH max KJ/m

energy density [Min. - Max.] ?

36-38

BH max MGOe

remenance Br [Min. - Max.] ?

12.2-12.6

kGs

remenance Br [Min. - Max.] ?

1220-1260

actual internal force iHc

≥ 955

kA/m

actual internal force iHc

≥ 12

kOe

max. temperature ?

≤ 80

°C

Physical properties of NdFeB

properties

values

units

Vickers hardness

≥550

Density

≥7.4

g/cm³

Curie Temperature TC

312 - 380

°C

Curie Temperature TF

593 - 716

°F

Specific resistance

150

μΩ⋅Cm

Bending strength

250

Mpa

Compressive strength

1000~1100

Mpa

Thermal expansion parallel (∥) to orientation (M)

(3-4) x 106

°C^-1

Thermal expansion perpendicular (⊥) to orientation (M)

-(1-3) x 10-6

°C^-1

Young's modulus

1.7 x 104

kg/mm²

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Cylindrical Neodymium Magnets i.e. MW 45x15 / N38 are magnets created of neodymium in a cylinder form. They are known for their extremely powerful magnetic properties, which outperform traditional iron magnets. Thanks to their strength, they are frequently employed in products that require powerful holding. The standard temperature resistance of these magnets is 80 degrees C, but for cylindrical magnets, this temperature rises with their height. Moreover, various special coatings, such as nickel, gold, or chrome, are frequently applied to the surface of neodymium magnets to increase their durability to corrosion. The cylindrical shape is as well very popular among neodymium magnets. The magnet with the designation MW 45x15 / N38 and a magnetic strength 37.32 kg weighs only 178.92 grams.

Cylindrical neodymium magnets, often referred to as Nd₂Fe₁₄B, are the strongest known material for magnet production. Their production process is complicated and includes melting special neodymium alloys with other metals such as iron and boron. After appropriate processing, such as heat and mechanical treatment, the magnets are made available for use in many applications, such as electric motors, audio-video equipment, and in the automotive and aerospace industries.
Moreover, even though neodymium is a component of the strongest magnets, they are susceptible to corrosion in humid environments. Therefore, they are coated with a coating of nickel to protect them from corrosion. Interestingly that NdFeB neodymium magnets are about 13% lighter than SmCo magnets and, despite their power, easily break, which requires special caution during their handling. For this reason, any mechanical processing should be done before they are magnetized.

In terms of safety, there are several recommendations regarding the use of these magnets. They should not be used in acidic, basic, organic environments or in solvents, as well as in water or oil. Additionally, they can damage data on magnetic cards and hard drives, although data deletion using a neodymium magnet is not guaranteed.

In terms of purchasing of cylindrical neodymium magnets, several enterprises offer such products. One of the suggested suppliers is our company Dhit, situated in Ożarów Mazowiecki, the address is available directly in the contact tab. It is recommended to check the website for the latest information and promotions, and before visiting, please call.

Due to their strength, cylindrical neodymium magnets are practical in various applications, they can also pose certain dangers. Due to their strong magnetic power, they can pull metallic objects with great force, which can lead to crushing skin and other surfaces, especially fingers. One should not use neodymium magnets near equipment or data storage devices, such as credit cards, as they can damage these devices in terms of magnetic recording. Moreover, neodymium magnets are prone to corrosion in humid environments, thus they are coated with a thin protective layer. Generally, although they are very useful, one should handle them with due caution.

Neodymium magnets, with the formula neodymium-iron-boron, are presently the strong magnets on the market. They are produced through a complicated sintering process, which involves melting special alloys of neodymium with other metals and then shaping and thermal processing. Their amazing magnetic strength comes from the exceptional production technology and chemical composition.
In terms of properties in different environments, neodymium magnets are sensitive to corrosion, especially in humid conditions. Therefore, they are often coated with coatings, such as nickel, to preserve them from external factors and extend their lifespan. High temperatures exceeding 130°C can cause a reduction of their magnetic properties, although there are particular types of neodymium magnets that can withstand temperatures up to 230°C.
As for dangers, it is important to avoid using neodymium magnets in acidic environments, basic conditions, organic or solvent environments, unless they are insulated. Additionally, their use is not recommended in water, oil, or in an environment containing hydrogen, as they may forfeit their magnetic strength.

A cylindrical magnet N52 and N50 is a powerful and highly strong magnetic piece in the form of a cylinder, that offers high force and universal application. Competitive price, 24h delivery, resistance and multi-functionality.

Advantages and disadvantages of neodymium magnets NdFeB.

In addition to their tremendous pulling force, neodymium magnets offer the following advantages:

They virtually do not lose power, because even after 10 years, the decline in efficiency is only ~1% (in laboratory conditions),
Their ability to resist magnetic interference from external fields is notable,
Thanks to the shiny finish and silver coating, they have an visually attractive appearance,
They exhibit superior levels of magnetic induction near the outer area of the magnet,
Thanks to their high temperature resistance, they can operate (depending on the shape) even at temperatures up to 230°C or more,
The ability for custom shaping or adaptation to individual needs – neodymium magnets can be manufactured in multiple variants of geometries, which enhances their versatility in applications,
Wide application in modern technologies – they find application in computer drives, electromechanical systems, clinical machines along with high-tech tools,
Compactness – despite their small size, they deliver powerful magnetism, making them ideal for precision applications

Disadvantages of neodymium magnets:

They can break when subjected to a heavy impact. If the magnets are exposed to shocks, they should be placed in a steel housing. The steel housing, in the form of a holder, protects the magnet from breakage and increases its overall resistance,
They lose power at elevated temperatures. Most neodymium magnets experience permanent degradation in strength when heated above 80°C (depending on the geometry and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
Due to corrosion risk in humid conditions, it is common to use sealed magnets made of plastic for outdoor use,
Using a cover – such as a magnetic holder – is advised due to the challenges in manufacturing threads directly in the magnet,
Possible threat related to magnet particles may arise, in case of ingestion, which is significant in the family environments. It should also be noted that small elements from these magnets might complicate medical imaging when ingested,
In cases of large-volume purchasing, neodymium magnet cost may be a barrier,

Handle Neodymium Magnets Carefully

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.

If you have a finger between or on the path of attracting magnets, there may be a large cut or even a fracture.

Magnets made of neodymium are particularly delicate, resulting in damage.

Neodymium magnetic are extremely fragile, and by joining them in an uncontrolled manner, they will crack. Neodymium magnets are made of metal and coated with a shiny nickel surface, but they are not as hard as steel. At the moment of connection between the magnets, small metal fragments can be dispersed in different directions.

Neodymium magnets are over 10 times more powerful than ferrite magnets (the ones in speakers), and their strength can surprise you.

To handle magnets properly, it is best to familiarize yourself with our information beforehand. This will help you avoid significant harm to your body and the magnets themselves.

Do not bring neodymium magnets 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.

Maintain neodymium magnets far from children.

Neodymium magnets are not toys. Do not allow children to play with them. They can be a significant choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing significant injuries, and even death.

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.

Neodymium magnets can demagnetize at high temperatures.

In certain circumstances, Neodymium magnets may experience demagnetization when subjected to high temperatures.

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 is because many of these devices are equipped with a function that deactivates the device in a magnetic field.

The magnet is coated with nickel. Therefore, exercise caution if you have an 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 TV, wallet, and computer HDD.

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, etc. devices. They can also damage devices like video players, televisions, CRT computer monitors. Do not forget to keep neodymium magnets away from these electronic devices.

Caution!

In order for you to know how powerful neodymium magnets are and why they are so dangerous, read the article - Dangerous strong neodymium magnets.