← previous

Product available shipping tomorrow

MP 20x5x27 / N38 - ring magnet

ring magnet

Catalog no 030185

GTIN: 5906301812029

Diameter [±0,1 mm]

20 mm

internal diameter Ø [±0,1 mm]

5 mm

Height [±0,1 mm]

27 mm

Weight

95.43 g

Magnetization Direction

↑ axial

Load capacity

7.7 kg / 75.51 N

Magnetic Induction

34.79 mT

Coating

[NiCuNi] nickel

33.00 ZŁ with VAT / pcs + price for transport

26.83 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

26.83 ZŁ

33.00 ZŁ

price from 23 pcs

25.22 ZŁ

31.02 ZŁ

price from 94 pcs

23.61 ZŁ

29.04 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Call us now +48 22 499 98 98 if you prefer drop us a message using request form the contact form page.
Lifting power as well as shape of magnets can be estimated using our power calculator.

Orders submitted before 14:00 will be dispatched today!

MP 20x5x27 / N38 - ring magnet

Specification/characteristics MP 20x5x27 / N38 - ring magnet

properties

values

Cat. no.

030185

GTIN

5906301812029

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

5 mm [±0,1 mm]

Height

27 mm [±0,1 mm]

Weight

95.43 g [±0,1 mm]

Magnetization Direction

↑ axial

Load capacity ~ ?

7.7 kg / 75.51 N

Magnetic Induction ~ ?

34.79 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!

MPL 20x10x5 / N38 - lamellar magnet

3.87 ZŁ / pcs

Produkt dostępny wysyłka jutro!

SM 32x350 [2xM8] / N42 - magnetic separator

1 045.50 ZŁ / pcs

Produkt dostępny wysyłka jutro!

SM 18x275 [2xM5] / N42 - magnetic separator

608.85 ZŁ / pcs

Produkt dostępny wysyłka jutro!

RM R7 SUPER - 13000 Gs / N52 - magnetic distributor

160.00 ZŁ / pcs

Due to unique properties, neodymium element MP 20x5x27 / N38 in a ring-shaped form finds extensive use in various industries. Thanks to a powerful magnetic field of 7.7 kg, which can be described as force, they are very helpful in applications that require high magnetic power in a relatively small area. Usage of MP 20x5x27 / N38 magnets include electric motors, generators, audio systems, and many other devices that use magnets for generating motion or energy storage. Despite their powerful strength, they have a relatively low weight of 95.43 grams, which makes them more practical compared to bulkier alternatives.

The operation of ring magnets results from their unique atomic structure. In the production process, neodymium atoms are arranged appropriately, which allows for generating a strong and precise magnetic field. This field is ideal for applications in systems requiring motion control. Additionally, ring magnets are resistant to demagnetization.

They are used in various fields of technology and industry, such as production of electronic devices, such as speakers and 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 indispensable in challenging industrial conditions.

Their uniqueness comes from extraordinary pulling power, ability to work in extreme conditions, and precision in generating the magnetic field. Thanks to their ring shape allows for application in devices requiring concentrated magnetic fields. Additionally, these magnets are significantly stronger and more versatile than ferrite counterparts, making them an ideal choice in the automotive, electronics, and medical industries.

Ring magnets perform excellently across a wide range of temperatures. They do not lose their magnetic properties, until the Curie temperature is exceeded, which for neodymium magnets is around 80°C. They are more resistant to loss of magnetism than traditional ferrite magnets. For this reason, they are ideal for applications in the automotive industry, robotics, and devices requiring operation in changing or extreme environmental conditions.

A ring magnet N50 and N52 is a strong and extremely powerful magnetic piece with the shape of a ring, that provides high force and versatile application. Good price, 24h delivery, stability and versatility.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their pulling strength, neodymium magnets provide the following advantages:

They do not lose their power approximately 10 years – the loss of lifting capacity is only ~1% (based on measurements),
They show exceptional resistance to demagnetization from external field exposure,
Because of the reflective layer of nickel, the component looks visually appealing,
The outer field strength of the magnet shows elevated magnetic properties,
These magnets tolerate high temperatures, often exceeding 230°C, when properly designed (in relation to build),
With the option for customized forming and personalized design, these magnets can be produced in various shapes and sizes, greatly improving design adaptation,
Wide application in new technology industries – they find application in HDDs, electric motors, medical equipment as well as high-tech tools,
Relatively small size with high magnetic force – neodymium magnets offer intense magnetic field in small dimensions, which allows for use in small systems

Disadvantages of NdFeB magnets:

They may fracture when subjected to a sudden impact. If the magnets are exposed to physical collisions, it is suggested to place them in a steel housing. The steel housing, in the form of a holder, protects the magnet from fracture and increases its overall robustness,
They lose magnetic force at increased temperatures. Most neodymium magnets experience permanent loss in strength when heated above 80°C (depending on the shape and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
They rust in a damp environment, especially when used outside, we recommend using moisture-resistant magnets, such as those made of non-metallic materials,
Limited ability to create threads in the magnet – the use of a mechanical support is recommended,
Potential hazard from tiny pieces may arise, when consumed by mistake, which is notable in the health of young users. Furthermore, small elements from these products have the potential to disrupt scanning when ingested,
High unit cost – neodymium magnets are costlier than other types of magnets (e.g., ferrite), which increases the cost of large-scale applications

Exercise Caution with Neodymium Magnets

Neodymium magnetic are characterized by their fragility, which can cause them to crumble.

Neodymium magnets are characterized by considerable fragility. Neodymium magnets are made of metal and coated with a shiny nickel, but they are not as durable as steel. At the moment of connection between the magnets, sharp metal fragments can be dispersed in different directions.

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

If joining of neodymium magnets is not controlled, at that time they may crumble and also crack. You can't move them to each other. At a distance less than 10 cm you should hold them very firmly.

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.

Neodymium magnets can demagnetize 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.

Keep neodymium magnets away from GPS and smartphones.

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

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.

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

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

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

Neodymium magnets produce strong magnetic fields that can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other devices. They can also damage videos, televisions, CRT computer monitors. Do not forget to keep neodymium magnets away from these electronic devices.

It is essential to keep neodymium magnets away from children.

Remember that neodymium magnets are not toys. Do not allow children to play 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 significant injuries, and even death.

The magnet is coated with nickel - be careful if you have an allergy.

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.

Be careful!

To raise awareness of why neodymium magnets are so dangerous, see the article titled How very dangerous are very strong neodymium magnets?.