← previous

Product available shipping tomorrow

MW 70x30 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010096

GTIN: 5906301810957

Diameter Ø [±0,1 mm]

70 mm

Height [±0,1 mm]

30 mm

Weight

865.9 g

Magnetization Direction

↑ axial

Load capacity

116.12 kg / 1138.75 N

Magnetic Induction

403.43 mT

Coating

[NiCuNi] nickel

317.17 ZŁ with VAT / pcs + price for transport

257.86 ZŁ net + 23% VAT / pcs

235.77 ZŁ net was the lowest price in the last 30 days

bulk discounts:

Need more?

price from 1 pcs

257.86 ZŁ

317.17 ZŁ

price from 5 pcs

242.39 ZŁ

298.14 ZŁ

price from 10 pcs

224.34 ZŁ

275.94 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Call us now +48 888 99 98 98 or contact us using inquiry form the contact section.
Lifting power as well as form of neodymium magnets can be analyzed using our power calculator.

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

MW 70x30 / N38 - cylindrical magnet

Specification/characteristics MW 70x30 / N38 - cylindrical magnet

properties

values

Cat. no.

010096

GTIN

5906301810957

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

70 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

865.9 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

116.12 kg / 1138.75 N

Magnetic Induction ~ ?

403.43 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!

HH 42x8.8 [M6] / N38 - through hole magnetic holder

29.89 ZŁ / pcs

Produkt dostępny wysyłka jutro!

SM 32x475 [2xM8] / N42 - magnetic separator

1 414.50 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MP 24x16x2 / N38 - ring magnet

3.69 ZŁ / pcs

Produkt dostępny wysyłka jutro!

UMS 32x10.5x5.5x8 / N38 - conical magnetic holder

12.09 ZŁ / pcs

Neodymium Cylindrical Magnets i.e. MW 70x30 / N38 are magnets made of neodymium in a cylinder form. They are known for their extremely powerful magnetic properties, which outperform traditional iron magnets. Because of their power, they are often employed in devices that require strong adhesion. The standard temperature resistance of such magnets is 80 degrees C, but for magnets in a cylindrical form, this temperature rises with their height. Additionally, 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 shape of a cylinder is also one of the most popular among neodymium magnets. The magnet designated MW 70x30 / N38 with a magnetic strength 116.12 kg weighs only 865.9 grams.

Cylindrical neodymium magnets, often referred to as Nd₂Fe₁₄B, are the strongest known material for magnet production. Their production process requires a specialized approach and includes melting special neodymium alloys along 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 varied 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 coating of gold to increase their durability. It's worth noting that NdFeB neodymium magnets are about 13% lighter than SmCo magnets and, despite their power, are brittle, which requires care during their handling. For this reason, 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 damage data on magnetic cards and hard drives, although data deletion using a neodymium magnet is not guaranteed.

Regarding the purchase of cylindrical neodymium magnets, several enterprises offer such products. One of the suggested suppliers is our company Dhit, located in Ożarów Mazowiecki, the address is available directly in the contact tab. It is recommended to visit the site for the latest information as well as offers, and before visiting, please call.

Although, cylindrical neodymium magnets are very practical in various applications, they can also pose certain dangers. Due to their significant magnetic power, they can attract metallic objects with great force, which can lead to crushing skin as well as other materials, especially be careful with fingers. Do 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 protective layer. In short, although they are very useful, they should be handled with due caution.

Neodymium magnets, with the formula Nd₂Fe₁₄B, are currently the strongest available magnets on the market. They are produced through a advanced sintering process, which involves melting specific alloys of neodymium with additional 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 coated with thin coatings, such as silver, to shield them from external factors and prolong their durability. High temperatures exceeding 130°C can cause a deterioration of their magnetic strength, although there are specific types of neodymium magnets that can tolerate temperatures up to 230°C.
As for potential dangers, it is important to avoid using neodymium magnets in acidic environments, basic environments, organic or solvent environments, unless they are adequately insulated. Additionally, their use is not recommended in wet conditions, oil, or in an atmosphere containing hydrogen, as they may lose their magnetic properties.

A neodymium magnet of class N52 and N50 is a strong and powerful metallic component designed as a cylinder, providing high force and broad usability. Very good price, fast shipping, durability and versatility.

Advantages as well as disadvantages of neodymium magnets NdFeB.

Apart from their strong magnetic energy, neodymium magnets have these key benefits:

They virtually do not lose strength, because even after 10 years, the performance loss is only ~1% (in laboratory conditions),
They remain magnetized despite exposure to strong external fields,
The use of a mirror-like gold surface provides a refined finish,
Magnetic induction on the surface of these magnets is impressively powerful,
With the right combination of compounds, they reach significant thermal stability, enabling operation at or above 230°C (depending on the form),
With the option for customized forming and precise design, these magnets can be produced in multiple shapes and sizes, greatly improving application potential,
Wide application in modern technologies – they find application in computer drives, electric drives, medical equipment along with sophisticated instruments,
Relatively small size with high magnetic force – neodymium magnets offer impressive pulling strength in compact dimensions, which makes them ideal in small systems

Disadvantages of NdFeB magnets:

They are prone to breaking when subjected to a powerful impact. If the magnets are exposed to mechanical hits, it is suggested to place them in a metal holder. The steel housing, in the form of a holder, protects the magnet from damage and increases its overall robustness,
High temperatures may significantly reduce the holding force of neodymium magnets. Typically, above 80°C, they experience permanent loss in performance (depending on height). 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,
They rust in a damp environment, especially when used outside, we recommend using moisture-resistant magnets, such as those made of plastic,
Using a cover – such as a magnetic holder – is advised due to the challenges in manufacturing holes directly in the magnet,
Potential hazard due to small fragments may arise, when consumed by mistake, which is important in the context of child safety. Furthermore, small elements from these products may interfere with diagnostics if inside the body,
In cases of large-volume purchasing, neodymium magnet cost may not be economically viable,

Maximum holding power of the magnet – what affects it?

The given lifting capacity of the magnet corresponds to the maximum lifting force, measured in a perfect environment, that is:

with the use of low-carbon steel plate serving as a magnetic yoke
of a thickness of at least 10 mm
with a smooth surface
with zero air gap
in a perpendicular direction of force
at room temperature

Practical lifting capacity: influencing factors

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 checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance {between} the magnet and the plate decreases the load capacity.

Handle Neodymium Magnets with Caution

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.

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.

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

To use 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.

People with pacemakers are advised to avoid neodymium magnets.

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.

Neodymium magnets can attract to each other due to their immense internal force, causing the skin and other body parts to get pinched and resulting in significant swellings.

Magnets attract each other within a distance of several to about 10 cm from each other. Don't put your fingers in the path of magnet attraction, because a serious injury may occur. Depending on how huge the neodymium magnets are, they can lead to a cut or a fracture.

It is important to maintain neodymium magnets out of reach from youngest children.

Neodymium magnets are not toys. You cannot allow them to become toys for children. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

Neodymium magnets can become demagnetized at high temperatures.

Despite the fact that 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.

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

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 destroy devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Keep neodymium magnets as far away as possible from GPS and smartphones.

Neodymium magnets produce strong magnetic fields that interfere with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

Neodymium magnets are delicate and can easily break and shatter.

Neodymium magnets are characterized by significant fragility. 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.

Be careful!

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