← previous

Product available shipping tomorrow

MW 15x4 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010030

GTIN: 5906301810292

Diameter Ø [±0,1 mm]

15 mm

Height [±0,1 mm]

4 mm

Weight

5.3 g

Magnetization Direction

↑ axial

Load capacity

3.32 kg / 32.56 N

Magnetic Induction

291.60 mT

Coating

[NiCuNi] nickel

1.60 ZŁ with VAT / pcs + price for transport

1.30 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

1.30 ZŁ

1.60 ZŁ

price from 462 pcs

1.22 ZŁ

1.50 ZŁ

price from 1924 pcs

1.14 ZŁ

1.41 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Call us +48 888 99 98 98 if you prefer get in touch using our online form our website.
Parameters and structure of neodymium magnets can be estimated using our our magnetic calculator.

Orders submitted before 14:00 will be dispatched today!

MW 15x4 / N38 - cylindrical magnet

Specification/characteristics MW 15x4 / N38 - cylindrical magnet

properties

values

Cat. no.

010030

GTIN

5906301810292

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

15 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

5.3 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

3.32 kg / 32.56 N

Magnetic Induction ~ ?

291.60 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

Shopping tips

Produkt dostępny wysyłka jutro!

UMGZ 42x20x9 [M8] GZ / N38 - magnetic holder external thread

33.96 ZŁ / pcs

Produkt dostępny wysyłka jutro!

UMP 107x40 [M8+M10] GW F400 Lina / N38 - search holder

450.00 ZŁ / pcs

Produkt dostępny wysyłka jutro!

SMZR 32x175 / N52 - magnetic separator with handle

553.50 ZŁ / pcs

Produkt dostępny wysyłka jutro!

UMP 107x40 [M8+M10] GW F 400 kg / N38 - search holder

400.00 ZŁ / pcs

Cylindrical Neodymium Magnets min. MW 15x4 / N38 are magnets created of neodymium in a cylindrical shape. They are known for their very strong magnetic properties, which exceed traditional ferrite magnets. Because of their strength, they are frequently employed in products that require strong adhesion. The typical 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 enhance their resistance to corrosion. The cylindrical shape is as well very popular among neodymium magnets. The magnet with the designation MW 15x4 / N38 and a magnetic strength 3.32 kg weighs only 5.3 grams.

Cylindrical neodymium magnets, often referred to as Nd₂Fe₁₄B, are the strongest known material for magnet production. The technology of their production requires a specialized approach and includes melting special neodymium alloys with other metals such as iron and boron. After a series of processes, such as heat and mechanical treatment, the magnets are made available for use in many applications, including electric motors, audio-video equipment, and in the automotive and aerospace industries.
Moreover, although neodymium is part of the strongest magnets, they are prone to corrosion in humid environments. Therefore, they are coated with a coating of gold to protect them from corrosion. It's worth noting 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. They should not be used in acidic, basic, organic environments or in solvents, as well as 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 purchasing of cylindrical neodymium magnets, many companies offer such products. One of the recommended suppliers is our company Dhit, situated in Ożarów Mazowiecki, the address can be found directly in the contact tab. It is recommended to check the site for the current information as well as offers, and before visiting, please call.

Due to their power, cylindrical neodymium magnets are practical in many applications, they can also constitute certain risk. Because of their significant magnetic power, they can pull metallic objects with significant force, which can lead to damaging skin or other surfaces, especially fingers. 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 prone to corrosion in humid environments, thus they are coated with a thin protective layer. In short, although they are very useful, one should handle them carefully.

Neodymium magnets, with the formula Nd₂Fe₁₄B, are at this time the strong magnets on the market. They are produced through a complicated sintering process, which involves melting specific alloys of neodymium with other metals and then shaping and heat treating. Their unmatched magnetic strength comes from the unique 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 covered with coatings, such as nickel, to shield them from environmental factors and extend their lifespan. Temperatures exceeding 130°C can cause a deterioration of their magnetic strength, although there are specific 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 properly protected. Additionally, their use is not recommended in water, oil, or in an atmosphere containing hydrogen, as they may forfeit their magnetic strength.

A cylindrical neodymium magnet of class N50 and N52 is a strong and powerful magnetic product shaped like a cylinder, that provides strong holding power and versatile application. Competitive price, fast shipping, durability and versatility.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

Their strength remains stable, and after approximately ten years, it drops only by ~1% (according to research),
They remain magnetized despite exposure to strong external fields,
By applying a shiny layer of nickel, the element gains a clean look,
They possess strong magnetic force measurable at the magnet’s surface,
With the right combination of magnetic alloys, they reach excellent thermal stability, enabling operation at or above 230°C (depending on the structure),
Thanks to the flexibility in shaping and the capability to adapt to individual requirements, neodymium magnets can be created in diverse shapes and sizes, which expands their application range,
Wide application in new technology industries – they find application in data storage devices, electric motors, medical equipment as well as sophisticated instruments,
Relatively small size with high magnetic force – neodymium magnets offer intense magnetic field in small dimensions, which makes them useful in compact constructions

Disadvantages of magnetic elements:

They are prone to breaking when subjected to a heavy 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 cracks and enhances its overall durability,
High temperatures may significantly reduce the magnetic power of neodymium magnets. Typically, above 80°C, they experience permanent loss in performance (depending on size). To prevent this, we offer heat-resistant magnets marked [AH], capable of working up to 230°C, which makes them perfect for high-temperature use,
Due to corrosion risk in humid conditions, it is wise to use sealed magnets made of rubber for outdoor use,
Using a cover – such as a magnetic holder – is advised due to the challenges in manufacturing holes directly in the magnet,
Safety concern due to small fragments may arise, when consumed by mistake, which is crucial in the protection of children. Additionally, miniature parts from these products can hinder health screening when ingested,
High unit cost – neodymium magnets are costlier than other types of magnets (e.g., ferrite), which can restrict large-scale applications

We Recommend Caution with Neodymium Magnets

Under no circumstances should neodymium magnets be placed near a computer HDD, TV, and wallet.

Strong 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. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.

Neodymium Magnets can attract to each other, pinch the skin, and cause significant injuries.

If joining of neodymium magnets is not under control, then they may crumble and crack. You can't move them to each other. At a distance less than 10 cm you should have them extremely strongly.

Under no circumstances should neodymium magnets be brought close to 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.

Magnets made of neodymium are characterized by their fragility, which can cause them to become damaged.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. Despite being made of metal as well as coated with a shiny nickel plating, they are not as hard as steel. At the moment of connection between the magnets, tiny sharp metal pieces can be propelled in various directions at high speed. Eye protection is recommended.

If you have a nickel allergy, avoid contact with neodymium magnets.

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.

Neodymium magnets can demagnetize at high temperatures.

Even though magnets have been found to maintain their efficacy up to temperatures of 80°C or 175°F, it's essential to consider that this threshold may fluctuate depending on the magnet's type, configuration, and intended usage.

Neodymium magnets should not be around 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 people with pacemakers.

Neodymium magnets generate strong magnetic fields. As a result, they interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.

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.

Comparing neodymium magnets to ferrite magnets (found in speakers), they are 10 times stronger, and their power can shock you.

Read the information on our website on how to properly utilize neodymium magnets and avoid significant harm to your body and unintentional disruption to the magnets.

Safety rules!

Please see the article - What danger lies in neodymium magnets? You will learn how to handle them properly.