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MW 14x10 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010391

GTIN: 5906301811084

Diameter Ø [±0,1 mm]

14 mm

Height [±0,1 mm]

10 mm

Weight

11.55 g

Magnetization Direction

↑ axial

Load capacity

7.74 kg / 75.9 N

Magnetic Induction

507.48 mT

Coating

[NiCuNi] nickel

6.84 ZŁ with VAT / pcs + price for transport

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MW 14x10 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500
Rating: 5

Specification/characteristics MW 14x10 / N38 - cylindrical magnet

properties

values

Cat. no.

010391

GTIN

5906301811084

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

14 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

11.55 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

7.74 kg / 75.9 N

Magnetic Induction ~ ?

507.48 mT

Coating

[NiCuNi] nickel

Manufacturing Tolerance

± 0.1 mm

Magnetic properties of material N38

properties

values

units

remenance Br [Min. - Max.] ?

12.2-12.6

kGs

remenance Br [Min. - Max.] ?

1220-1260

coercivity bHc ?

10.8-11.5

kOe

coercivity bHc ?

860-915

kA/m

actual internal force iHc

≥ 12

kOe

actual internal force iHc

≥ 955

kA/m

energy density [Min. - Max.] ?

36-38

BH max MGOe

energy density [Min. - Max.] ?

287-303

BH max KJ/m

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 min. MW 14x10 / N38 are magnets created of neodymium in a cylinder form. They are known for their very strong magnetic properties, which outperform ordinary iron magnets. Thanks to their power, they are frequently used in devices that need strong adhesion. The standard temperature resistance of these magnets is 80 degrees C, but for magnets in a cylindrical form, this temperature rises with their height. Moreover, various special coatings, such as nickel, gold, or chrome, are often applied to the surface of neodymium magnets to enhance their durability to corrosion. The shape of a cylinder is also one of the most popular among neodymium magnets. The magnet with the designation MW 14x10 / N38 and a magnetic strength 7.74 kg has a weight of only 11.55 grams.

Cylindrical neodymium magnets, also known as Nd₂Fe₁₄B, represent the strongest known material for magnet production. Their production process is complicated and includes sintering special neodymium alloys with other metals such as iron and boron. After a series of processes, such as heat and mechanical treatment, the magnets become ready for use in many applications, such as electric motors, audio-video equipment, and in the automotive and aerospace industries.
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 gold-nickel to increase their durability. 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. Therefore, any mechanical processing should be done before they are magnetized.

In terms of safety, there are several recommendations regarding the use of these magnets. It is advisable to avoid their use in acidic, basic, organic environments or where solvents are present, 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 always certain.

In terms of purchasing of cylindrical neodymium magnets, several enterprises offer such products. One of the recommended suppliers is our company Dhit, located 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 useful in various applications, they can also pose certain risk. Due to their significant magnetic power, they can attract metallic objects with uncontrolled force, which can lead to damaging skin and other surfaces, especially hands. One should not use neodymium magnets near electronic devices or data storage devices, such as credit cards, as they can destroy these devices in terms of magnetic recording. Moreover, neodymium magnets are susceptible to corrosion in humid environments, therefore they are coated with a thin e.g., nickel layer. In short, although they are very useful, they should be handled with due caution.

Neodymium magnets, with the formula neodymium-iron-boron, are at this time the very strong magnets on the market. They are produced through a advanced sintering process, which involves fusing special alloys of neodymium with additional metals and then forming and thermal processing. Their powerful magnetic strength comes from the unique production technology and chemical structure.
In terms of properties in different environments, neodymium magnets are susceptible to corrosion, especially in conditions of high humidity. Therefore, they are often covered with coatings, such as epoxy, to shield them from environmental factors and extend their lifespan. Temperatures exceeding 130°C can cause a loss 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 insulated. Additionally, their use is not recommended in water, oil, or in an environment containing hydrogen, as they may lose their magnetic strength.

A cylindrical magnet of class N50 and N52 is a strong and powerful metallic component with the shape of a cylinder, featuring strong holding power and broad usability. Attractive price, 24h delivery, resistance and versatility.

Advantages and disadvantages of neodymium magnets NdFeB.

In addition to their tremendous strength, 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),
They remain magnetized despite exposure to magnetic surroundings,
Because of the reflective layer of gold, the component looks visually appealing,
They possess intense magnetic force measurable at the magnet’s surface,
These magnets tolerate elevated 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 multiple shapes and sizes, greatly improving application potential,
Wide application in advanced technical fields – they are used in hard drives, electric drives, diagnostic apparatus and sophisticated instruments,
Relatively small size with high magnetic force – neodymium magnets offer intense magnetic field in tiny dimensions, which makes them ideal in small systems

Disadvantages of neodymium magnets:

They are prone to breaking when subjected to a sudden impact. If the magnets are exposed to external force, it is advisable to use in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from breakage while also strengthens its overall resistance,
Magnets lose pulling force when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible power drop (influenced by the magnet’s dimensions). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
Magnets exposed to wet conditions can rust. Therefore, for outdoor applications, it's best to use waterproof types made of rubber,
Using a cover – such as a magnetic holder – is advised due to the challenges in manufacturing threads directly in the magnet,
Health risk related to magnet particles may arise, in case of ingestion, which is crucial in the health of young users. Furthermore, tiny components from these assemblies may interfere with diagnostics after being swallowed,
High unit cost – neodymium magnets are more expensive than other types of magnets (e.g., ferrite), which may limit large-scale applications

Maximum magnetic pulling force – what affects it?

The given pulling force of the magnet represents the maximum force, calculated under optimal conditions, namely:

with mild steel, used as a magnetic flux conductor
of a thickness of at least 10 mm
with a smooth surface
in conditions of no clearance
in a perpendicular direction of force
under standard ambient temperature

Impact of factors on magnetic holding capacity in practice

The lifting capacity of a magnet is influenced by in practice key elements, ordered from most important to least significant:

Air gap between the magnet and the plate, as even a very small distance (e.g. 0.5 mm) can cause a drop in lifting force of up to 50%.
Direction of applied force, because the maximum lifting capacity is achieved under perpendicular application. The force required to slide the magnet along the plate is usually several times lower.
Thickness of the plate, as a plate that is too thin causes part of the magnetic flux not to be used and to remain wasted in the air.
Material of the plate, because higher carbon content lowers holding force, while higher iron content increases it. The best choice is steel with high magnetic permeability and high saturation induction.
Surface of the plate, because the more smooth and polished it is, the better the contact and consequently the greater the magnetic saturation.
Operating temperature, since all permanent magnets have a negative temperature coefficient. This means that at high temperatures they are weaker, while at sub-zero temperatures they become slightly stronger.

* Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a small distance {between} the magnet’s surface and the plate decreases the load capacity.

Precautions

Neodymium magnets are the most powerful magnets ever invented. Their power can surprise 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.

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, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.

It is essential to maintain neodymium magnets away from youngest children.

Remember that neodymium magnets are not toys. Be cautious and make sure no child plays 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.

Keep neodymium magnets away from the wallet, computer, and TV.

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, or other devices. They can also destroy videos, televisions, CRT computer monitors. Do not forget to keep neodymium magnets away from these electronic devices.

Never bring neodymium magnets close to a phone and GPS.

Strong fields generated by neodymium magnets interfere with compasses and magnetometers used in navigation, as well as internal compasses of smartphones and GPS devices.

People with pacemakers are advised to avoid neodymium magnets.

Neodymium magnets produce strong magnetic fields that can interfere with the operation of a heart pacemaker. However, if the magnetic field does not affect the device, it can damage its components or deactivate the device when it is in a magnetic field.

Neodymium magnets can become demagnetized at high temperatures.

Although magnets have demonstrated their effectiveness up to 80°C or 175°F, the temperature can vary depending on the type, shape, and intended use of the specific magnet.

Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.

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.

Dust and powder from neodymium magnets are flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

Neodymium magnetic are incredibly fragile, they easily break and can become damaged.

Neodymium magnets 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. 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.

Pay attention!

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