← previous

Product available shipping tomorrow

MW 5x15 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010084

GTIN: 5906301810834

Diameter Ø [±0,1 mm]

5 mm

Height [±0,1 mm]

15 mm

Weight

2.21 g

Magnetization Direction

↑ axial

Load capacity

4.15 kg / 40.7 N

Magnetic Induction

610.03 mT

Coating

[NiCuNi] nickel

1.107 ZŁ with VAT / pcs + price for transport

0.900 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.900 ZŁ

1.107 ZŁ

price from 700 pcs

0.846 ZŁ

1.041 ZŁ

price from 2800 pcs

0.792 ZŁ

0.974 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to negotiate?

Call us now +48 888 99 98 98 if you prefer let us know through our online form the contact page.
Weight along with appearance of a magnet can be calculated using our our magnetic calculator.

Same-day processing for orders placed before 14:00.

MW 5x15 / N38 - cylindrical magnet

Specification/characteristics MW 5x15 / N38 - cylindrical magnet

properties

values

Cat. no.

010084

GTIN

5906301810834

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

5 mm [±0,1 mm]

Height

15 mm [±0,1 mm]

Weight

2.21 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

4.15 kg / 40.7 N

Magnetic Induction ~ ?

610.03 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

Shopping tips

Product available wysyłka jutro!

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

33.96 ZŁ / pcs

Product available wysyłka jutro!

UMH 48x11x65 [M6] / N38 - magnetic holder with hook

68.88 ZŁ / pcs

Product available wysyłka jutro!

KM HF - 11,3 kg - magnetic bracket

24.60 ZŁ / pcs

Product available wysyłka jutro!

UMT 12x20 red / N38 - board holder

1.894 ZŁ / pcs

Neodymium Cylindrical Magnets min. MW 5x15 / N38 are magnets created of neodymium in a cylinder form. They are valued for their extremely powerful magnetic properties, which exceed traditional ferrite magnets. Thanks to their power, they are often used in products that require powerful holding. The typical temperature resistance of such magnets is 80°C, but for cylindrical magnets, this temperature rises with the growth of the magnet. Additionally, various special coatings, such as nickel, gold, or chrome, are frequently applied to the surface of neodymium magnets to enhance their durability to corrosion. The shape of a cylinder is as well very popular among neodymium magnets. The magnet with the designation MW 5x15 / N38 with a magnetic lifting capacity of 4.15 kg has a weight of only 2.21 grams.

Cylindrical neodymium magnets, often referred to as Nd₂Fe₁₄B, represent the strongest known material for magnet production. Their production process is complicated and includes sintering special neodymium alloys along 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, 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-nickel to protect them from corrosion. Interestingly that NdFeB neodymium magnets are about 13% lighter than SmCo magnets and, despite their power, are brittle, which requires special caution 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. It is advisable to avoid their use in acidic, basic, organic environments or where solvents are present, and also 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 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 site for the current information as well as offers, and before visiting, please call.

Although, cylindrical neodymium magnets are very useful in many applications, they can also pose certain dangers. Because of their strong magnetic power, they can pull metallic objects with uncontrolled force, which can lead to damaging skin as well as other surfaces, especially fingers. Do not use neodymium magnets near electronic devices or data storage devices, such as credit cards, as they can damage these devices in terms of magnetic recording. Moreover, neodymium magnets are susceptible to corrosion in humid environments, therefore they are coated with a thin protective layer. In short, although they are handy, 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 special alloys of neodymium with additional metals and then forming and heat treating. Their powerful magnetic strength comes from the specific 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 silver, to preserve them from environmental factors and extend their lifespan. High temperatures exceeding 130°C can result in a loss of their magnetic properties, 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 environments, organic or solvent environments, unless they are insulated. Additionally, their use is not recommended in wet conditions, oil, or in an environment containing hydrogen, as they may forfeit their magnetic properties.

A neodymium magnet of class N52 and N50 is a powerful and highly strong metallic component shaped like a cylinder, featuring strong holding power and universal applicability. Good price, fast shipping, stability and multi-functionality.

Advantages and disadvantages of neodymium magnets NdFeB.

In addition to their long-term stability, neodymium magnets provide the following advantages:

They do not lose their power nearly ten years – the loss of power is only ~1% (based on measurements),
They protect against demagnetization induced by surrounding magnetic fields very well,
Thanks to the polished finish and gold coating, they have an visually attractive appearance,
Magnetic induction on the surface of these magnets is impressively powerful,
With the right combination of magnetic alloys, they reach significant thermal stability, enabling operation at or above 230°C (depending on the form),
With the option for customized forming and targeted design, these magnets can be produced in various shapes and sizes, greatly improving engineering flexibility,
Wide application in new technology industries – they serve a purpose in data storage devices, electric drives, diagnostic apparatus or even other advanced devices,
Compactness – despite their small size, they deliver powerful magnetism, making them ideal for precision applications

Disadvantages of NdFeB magnets:

They may fracture when subjected to a strong impact. If the magnets are exposed to mechanical hits, they should be placed in a protective case. The steel housing, in the form of a holder, protects the magnet from breakage and additionally reinforces its overall durability,
They lose field intensity at increased temperatures. Most neodymium magnets experience permanent decline 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,
Magnets exposed to humidity can degrade. Therefore, for outdoor applications, we suggest waterproof types made of plastic,
The use of a protective casing or external holder is recommended, since machining multi-axis shapes in neodymium magnets is risky,
Potential hazard from tiny pieces may arise, if ingested accidentally, which is significant in the health of young users. It should also be noted that miniature parts from these products can interfere with diagnostics if inside the body,
High unit cost – neodymium magnets are more expensive than other types of magnets (e.g., ferrite), which increases the cost of large-scale applications

Best holding force of the magnet in ideal parameters – what it depends on?

The given pulling force of the magnet represents the maximum force, assessed under optimal conditions, specifically:

with the use of low-carbon steel plate acting as a magnetic yoke
having a thickness of no less than 10 millimeters
with a smooth surface
in conditions of no clearance
with vertical force applied
under standard ambient temperature

Lifting capacity in real conditions – factors

In practice, the holding capacity of a magnet is affected by these factors, from crucial to less important:

Air gap between the magnet and the plate, since even a very small distance (e.g. 0.5 mm) causes 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 a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance {between} the magnet’s surface and the plate decreases the holding force.

Exercise Caution with Neodymium Magnets

Neodymium magnets are among the most powerful magnets on Earth. The astonishing force they generate between each other can surprise you.

Familiarize yourself with our information to properly handle these magnets and avoid significant swellings to your body and prevent damage to the magnets.

Do not bring neodymium magnets close to GPS and smartphones.

Neodymium magnets are a source of intense magnetic fields that cause interference with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

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

Neodymium magnets generate strong magnetic fields that can destroy 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. Remember not to place neodymium magnets close to these electronic devices.

Dust and powder from neodymium magnets are flammable.

Avoid drilling or mechanical processing of neodymium magnets. Once crushed into fine powder or dust, this material becomes highly flammable.

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

In the situation of placing a finger in the path of a neodymium magnet, in such a case, a cut or a fracture may occur.

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

Neodymium magnetic are delicate and can easily break and get damaged.

Neodymium magnets are characterized by considerable fragility. 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.

Keep neodymium magnets away from people with pacemakers.

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.

It is essential to keep neodymium magnets out of reach from children.

Not all neodymium magnets are toys, so do not let children play with them. In the case of small magnets, they can be swallowed and cause choking. In such cases, the only solution is to undergo surgery to remove the magnets, and otherwise, it can even lead to death.

Neodymium magnets can become demagnetized at high temperatures.

Although magnets are generally resilient, their ability to retain their magnetic strength can be influenced by factors like the type of material used, the magnet's shape, and the intended purpose for which it is employed.

Safety rules!

To show why neodymium magnets are so dangerous, see the article - How very dangerous are strong neodymium magnets?.