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neodymium magnets

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MP 60x20x5 / N38 - ring magnet

ring magnet

Catalog no 030204

GTIN: 5906301812210

5

Diameter [±0,1 mm]

60 mm

internal diameter Ø [±0,1 mm]

20 mm

Height [±0,1 mm]

5 mm

Weight

47.12 g

Magnetization Direction

↑ axial

Load capacity

5.7 kg / 55.9 N

Magnetic Induction

175.24 mT

Coating

[NiCuNi] nickel

47.99 with VAT / pcs + price for transport

39.02 ZŁ net + 23% VAT / pcs

bulk discounts:

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42.24 ZŁ

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MP 60x20x5 / N38 - ring magnet

Specification/characteristics MP 60x20x5 / N38 - ring magnet
properties
values
Cat. no.
030204
GTIN
5906301812210
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter
60 mm [±0,1 mm]
internal diameter Ø
20 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
47.12 g [±0,1 mm]
Magnetization Direction
↑ axial
Load capacity ~ ?
5.7 kg / 55.9 N
Magnetic Induction ~ ?
175.24 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
T
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
Hv
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

Due to unique properties, MP 60x20x5 / N38 in a ring form finds extensive use in various industries. Thanks to a powerful magnetic field of 5.7 kg, which can be described as strength, they are very helpful in applications that require high magnetic power in a relatively small area. Applications of MP 60x20x5 / N38 magnets include electric motors, generating systems, audio systems, and several other devices that use magnets for generating motion or storing energy. Despite their powerful strength, they have a comparatively low weight of 47.12 grams, which makes them more practical compared to bulkier alternatives.
Ring magnets work due to their atomic structure. Their properties arise from a controlled production process, including sintering and magnetization, which allows for generating a strong and precise magnetic field. This field is ideal for applications in systems requiring motion control. Additionally, their resistance to high temperatures and demagnetization makes them indispensable in industry.
Ring magnets have a wide range of applications in many industries, such as electronics, e.g., in the production of speakers or electric motors, automotive, where they are used in brushless electric motors, and medicine, where they are used in precision diagnostic devices. Thanks to their temperature resistance and precision makes them ideal for technologically advanced applications.
Ring magnets stand out high magnetic strength, ability to work in extreme conditions, precise control of the magnetic field. Their unique ring form allows for effective use in devices such as motors or speakers. Additionally, these magnets are more durable than traditional ferrite magnets, making them an ideal choice in the automotive, electronics, and medical industries.
Ring magnets perform excellently across a wide range of temperatures. Their magnetic properties remain stable, until the Curie temperature is exceeded, which for neodymium magnets is around 80°C. Compared to other types of magnets, ring magnets show greater resistance to demagnetization. Because of this, 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, that offers strong holding power and versatile application. Good price, fast shipping, stability and multi-functionality.

Advantages and disadvantages of neodymium magnets NdFeB.

In addition to their tremendous strength, neodymium magnets offer the following advantages:

  • They retain their attractive force for nearly ten years – the drop is just ~1% (according to analyses),
  • They show superior resistance to demagnetization from external magnetic fields,
  • Thanks to the shiny finish and gold coating, they have an aesthetic appearance,
  • Magnetic induction on the surface of these magnets is impressively powerful,
  • Thanks to their enhanced temperature resistance, they can operate (depending on the geometry) even at temperatures up to 230°C or more,
  • With the option for tailored forming and targeted design, these magnets can be produced in various shapes and sizes, greatly improving engineering flexibility,
  • Important function in modern technologies – they find application in data storage devices, rotating machines, healthcare devices or even technologically developed systems,
  • Relatively small size with high magnetic force – neodymium magnets offer strong power in compact dimensions, which allows for use in small systems

Disadvantages of rare earth magnets:

  • They are prone to breaking when subjected to a sudden impact. If the magnets are exposed to mechanical hits, we recommend in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from cracks and additionally enhances 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 structure). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
  • They rust in a moist environment – during outdoor use, we recommend using moisture-resistant magnets, such as those made of non-metallic materials,
  • Using a cover – such as a magnetic holder – is advised due to the limitations in manufacturing complex structures directly in the magnet,
  • Potential hazard from tiny pieces may arise, in case of ingestion, which is notable in the health of young users. Moreover, tiny components from these magnets can disrupt scanning if inside the body,
  • Due to a complex production process, their cost is relatively high,

Safety Precautions

Neodymium magnets can demagnetize at high temperatures.

Even though magnets have been observed 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 can attract to each other, pinch the skin, and cause significant swellings.

Neodymium magnets bounce and clash mutually within a distance of several to almost 10 cm from each other.

 Maintain neodymium magnets far from youngest children.

Neodymium magnets are not toys. You cannot allow them to become toys for children. 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.

The magnet coating contains nickel, so be cautious if you have a nickel 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.

Do not place neodymium magnets near a computer HDD, TV, and wallet.

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, or other devices. They can also damage devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium magnets are among the strongest magnets on Earth. The surprising 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.

Avoid bringing neodymium magnets close to a phone or GPS.

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

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 magnetic are particularly fragile, which leads to their breakage.

Neodymium magnets are characterized by significant fragility. Magnets made of neodymium 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, small metal fragments can be dispersed in different directions.

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.

Safety precautions!

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

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e-mail: bok@dhit.pl

tel: +48 888 99 98 98