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MW 80x30 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010100

GTIN: 5906301810995

Diameter Ø [±0,1 mm]

80 mm

Height [±0,1 mm]

30 mm

Weight

1130.97 g

Magnetization Direction

↑ axial

Load capacity

132.7 kg / 1301.34 N

Magnetic Induction

371.95 mT

Coating

[NiCuNi] nickel

415.00 ZŁ with VAT / pcs + price for transport

337.40 ZŁ net + 23% VAT / pcs

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MW 80x30 / N38 - cylindrical magnet

Specification/characteristics MW 80x30 / N38 - cylindrical magnet

properties

values

Cat. no.

010100

GTIN

5906301810995

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

80 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

1130.97 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

132.7 kg / 1301.34 N

Magnetic Induction ~ ?

371.95 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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Neodymium Cylindrical Magnets min. MW 80x30 / N38 are magnets made of neodymium in a cylinder form. They are valued for their extremely powerful magnetic properties, which exceed ordinary ferrite magnets. Because of their strength, they are frequently employed in products that require strong adhesion. The standard temperature resistance of such magnets is 80°C, but for cylindrical magnets, this temperature increases with their height. Additionally, 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 shape of a cylinder is as well one of the most popular among neodymium magnets. The magnet named MW 80x30 / N38 and a magnetic strength 132.7 kg weighs only 1130.97 grams.

Cylindrical neodymium magnets, often referred to as Nd₂Fe₁₄B, represent the strongest known material for magnet production. Their production process requires a specialized approach and includes sintering special neodymium alloys with other metals such as iron and boron. After appropriate processing, such as heat and mechanical treatment, the magnets become ready for use in many applications, including electric motors, audio-video equipment, and in the automotive and aerospace industries.
Moreover, although neodymium is a component of the strongest magnets, they are prone to corrosion in humid environments. For this reason, they are coated with a thin layer of silver to increase their durability. Interestingly that NdFeB neodymium magnets are about 13% lighter than SmCo magnets and, despite their power, easily break, which requires care 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 where solvents are present, as well as in water or oil. Furthermore, they can distort data on magnetic cards and hard drives, although data deletion using a neodymium magnet is not guaranteed.

Regarding the purchase of cylindrical neodymium magnets, many companies offer such products. One of the suggested suppliers is our company Dhit, situated in Ożarów Mazowiecki, the address can be found directly in the contact tab. It is recommended to visit the website for the current information and promotions, and before visiting, we recommend calling.

Although, cylindrical neodymium magnets are very practical in various applications, they can also constitute certain risk. Due to their significant magnetic power, they can attract metallic objects with uncontrolled force, which can lead to damaging skin or other materials, especially hands. One should not use neodymium magnets near equipment or data storage devices, such as credit cards, as they can destroy these devices in terms of magnetic recording. Furthermore, neodymium magnets are prone to corrosion in humid environments, thus they are coated with a thin e.g., nickel layer. In short, although they are very useful, one should handle them carefully.

Neodymium magnets, with the formula neodymium-iron-boron, are at this time 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 forming and heat treating. Their unmatched magnetic strength comes from the exceptional production technology and chemical structure.
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 silver, to shield them from external factors and prolong their durability. Temperatures exceeding 130°C can cause a reduction of their magnetic strength, although there are specific types of neodymium magnets that can tolerate temperatures up to 230°C.
As for dangers, it is important to avoid using neodymium magnets in acidic conditions, basic conditions, organic or solvent environments, unless they are properly protected. Additionally, their use is not recommended in water, oil, or in an atmosphere containing hydrogen, as they may forfeit their magnetic properties.

A neodymium magnet N50 and N52 is a powerful and highly strong magnetic product with the shape of a cylinder, providing strong holding power and universal applicability. Very good price, 24h delivery, stability and broad range of uses.

Advantages and disadvantages of neodymium magnets NdFeB.

Besides their magnetic performance, neodymium magnets are valued for these benefits:

Their power is maintained, and after around 10 years, it drops only by ~1% (according to research),
They are extremely resistant to demagnetization caused by external magnetic sources,
By applying a reflective layer of nickel, the element gains a clean look,
The outer field strength of the magnet shows advanced magnetic properties,
These magnets tolerate high temperatures, often exceeding 230°C, when properly designed (in relation to build),
The ability for accurate shaping or customization to individual needs – neodymium magnets can be manufactured in multiple variants of geometries, which extends the scope of their use cases,
Wide application in modern technologies – they find application in computer drives, rotating machines, clinical machines along with technologically developed systems,
Compactness – despite their small size, they provide high effectiveness, making them ideal for precision applications

Disadvantages of NdFeB magnets:

They are fragile when subjected to a heavy impact. If the magnets are exposed to physical collisions, they should be placed in a protective case. The steel housing, in the form of a holder, protects the magnet from fracture while also enhances its overall durability,
Magnets lose power when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible power drop (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,
They rust in a damp environment, especially when used outside, we recommend using encapsulated magnets, such as those made of non-metallic materials,
The use of a protective casing or external holder is recommended, since machining fine details in neodymium magnets is not feasible,
Health risk linked to microscopic shards may arise, in case of ingestion, which is significant in the health of young users. It should also be noted that small elements from these magnets may hinder health screening once in the system,
In cases of mass production, neodymium magnet cost may not be economically viable,

Be Cautious with Neodymium Magnets

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.

Magnets will jump and clash together within a radius of several to almost 10 cm from each other.

Dust and powder from neodymium magnets are flammable.

Avoid drilling or mechanical processing of neodymium magnets. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

Neodymium magnetic are fragile as well as can easily break as well as shatter.

Neodymium magnetic are fragile and will crack if allowed to collide with each other, even from a distance of a few centimeters. They are coated with a shiny nickel plating similar to steel, but they are not as hard. 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.

Avoid bringing neodymium magnets close to a phone or GPS.

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.

Neodymium magnets should not be in the vicinity children.

Remember that 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 severe injuries, and even death.

The magnet coating is made of nickel, so be cautious if you have an allergy.

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.

Do not place neodymium magnets near a computer HDD, TV, and wallet.

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. You should especially avoid placing neodymium magnets near electronic devices.

Neodymium magnets are over 10 times stronger than ferrite magnets (the ones in speakers), and their power 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.

Neodymium magnets can become demagnetized 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.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes 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 to show why neodymium magnets are so dangerous, see the article - How dangerous are very strong neodymium magnets?.