Product available shipping tomorrow

MP 20x10x5 / N38 - ring magnet

ring magnet

Catalog no 030184

GTIN: 5906301812012

Diameter [±0,1 mm]

20 mm

internal diameter Ø [±0,1 mm]

10 mm

Height [±0,1 mm]

5 mm

Weight

11.78 g

Magnetization Direction

↑ axial

Load capacity

2.85 kg / 27.95 N

Magnetic Induction

160.75 mT

Coating

[NiCuNi] nickel

4.50 ZŁ with VAT / pcs + price for transport

3.66 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

3.66 ZŁ

4.50 ZŁ

price from 164 pcs

3.44 ZŁ

4.23 ZŁ

price from 684 pcs

3.22 ZŁ

3.96 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Hunting for a discount?

Call us +48 888 99 98 98 or drop us a message by means of request form through our site.
Force along with form of magnetic components can be estimated using our online calculation tool.

Orders placed before 14:00 will be shipped the same business day.

MP 20x10x5 / N38 - ring magnet

Specification/characteristics MP 20x10x5 / N38 - ring magnet

properties

values

Cat. no.

030184

GTIN

5906301812012

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter

20 mm [±0,1 mm]

internal diameter Ø

10 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

11.78 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

2.85 kg / 27.95 N

Magnetic Induction ~ ?

160.75 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!

UMT 29x38 white / N38 - board holder

6.81 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MW 16x3 / N38 - cylindrical magnet

1.73 ZŁ / pcs

Produkt dostępny wysyłka jutro!

UMP 75x25 [M10x3] GW F200 GOLD Lina / N42 - search holder

200.00 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MW 25x5 / N38AH - cylindrical magnet

15.14 ZŁ / pcs

Due to specific properties, neodymium element MP 20x10x5 / N38 in a ring-shaped form finds extensive use in various industries. Thanks to a powerful magnetic field of 2.85 kg, which can be described as force, they are key in applications that require high magnetic power in a compact space. Applications of MP 20x10x5 / N38 magnets include electrical mechanisms, generators, sound devices, and numerous other devices that use magnets for generating motion or energy storage. Despite their powerful strength, they have a comparatively low weight of 11.78 grams, which makes them more practical compared to bulkier alternatives.

The operation of ring magnets results from their unique atomic structure. Their properties arise from a controlled production process, including sintering and magnetization, which allows for the creation of a concentrated magnetic field in a specific direction. This field is ideal for applications in systems requiring motion control. Additionally, their resistance to high temperatures and demagnetization makes them indispensable in industry.

They are used in various fields of technology and industry, such as electronics, e.g., in the production of speakers or electric motors, automotive, where they are used in brushless electric motors, and medical equipment, e.g., in scanning devices. Their ability to work in high temperatures and precise magnetic field control makes them ideal for technologically advanced applications.

Ring magnets stand out extraordinary pulling power, resistance to high temperatures, precise control of the magnetic field. Thanks to their ring shape allows for application in devices requiring concentrated magnetic fields. Moreover, these magnets are significantly stronger and more versatile than ferrite counterparts, which has made them popular in advanced technologies and industrial applications.

Ring magnets perform excellently across a wide range of temperatures. Their magnetic properties remain stable, as long as the temperature does not exceed the Curie point. Compared to other types of magnets, ring magnets show greater resistance to demagnetization. For this reason, they are ideal for applications in the automotive industry, robotics, and devices requiring operation in changing or extreme environmental conditions.

A neodymium magnet in classes N52 and N50 is a strong and powerful metal object in the form of a ring, providing strong holding power and universal applicability. Competitive price, 24h delivery, resistance and broad range of uses.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their immense pulling force, neodymium magnets offer the following advantages:

They have stable power, and over nearly 10 years their attraction force decreases symbolically – ~1% (according to theory),
They protect against demagnetization induced by surrounding electromagnetic environments very well,
Because of the reflective layer of silver, the component looks visually appealing,
They have exceptional magnetic induction on the surface of the magnet,
They are suitable for high-temperature applications, operating effectively at 230°C+ due to advanced heat resistance and form-specific properties,
With the option for tailored forming and personalized design, these magnets can be produced in numerous shapes and sizes, greatly improving design adaptation,
Wide application in modern technologies – they serve a purpose in hard drives, electric motors, medical equipment or even high-tech tools,
Relatively small size with high magnetic force – neodymium magnets offer strong power in tiny dimensions, which allows for use in small systems

Disadvantages of magnetic elements:

They may fracture when subjected to a sudden impact. If the magnets are exposed to physical collisions, they should be placed in a steel housing. The steel housing, in the form of a holder, protects the magnet from damage and additionally increases 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 profile). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
Magnets exposed to moisture can rust. Therefore, for outdoor applications, we advise waterproof types made of plastic,
The use of a protective casing or external holder is recommended, since machining fine details in neodymium magnets is not feasible,
Potential hazard from tiny pieces may arise, in case of ingestion, which is important in the protection of children. Furthermore, small elements from these magnets might disrupt scanning when ingested,
In cases of mass production, neodymium magnet cost may be a barrier,

Precautions

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

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. They can also damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.

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

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.

Neodymium magnets can demagnetize at high temperatures.

Under specific conditions, Neodymium magnets may experience demagnetization when subjected to high temperatures.

Do not bring neodymium magnets close to GPS and smartphones.

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

It is important to keep neodymium magnets away from children.

Not all neodymium magnets are toys, so do not let children play with them. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

People with pacemakers are advised to avoid neodymium magnets.

Neodymium magnets generate strong magnetic fields. As a result, they interfere with the operation of a pacemaker. This is because many of these devices are equipped with a function that deactivates the device in a magnetic field.

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

Magnets will attract each other within a distance of several to about 10 cm from each other. Remember not to put fingers between magnets or in their path when they attract. Depending on how large the neodymium magnets are, they can lead to a cut or a fracture.

Dust and powder from neodymium magnets are highly 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 magnets are incredibly delicate, they easily crack as well as can crumble.

Neodymium magnets are delicate and will shatter if allowed to collide with each other, even from a distance of a few centimeters. Despite being made of metal as well as coated with a shiny nickel plating, they are not as hard as steel. 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.

Warning!

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