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UMC 20x6/3x7 / N38 - cylindrical magnetic holder

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UMC 20x6/3x7 / N38 - cylindrical magnetic holder

cylindrical magnetic holder

Catalog no 320407

GTIN: 5906301814634

Diameter [±0,1 mm]

20 mm

internal diameter Ø [±0,1 mm]

6/3 mm

Height [±0,1 mm]

7 mm

Weight

12 g

Load capacity

6 kg / 58.84 N

Coating

[NiCuNi] nickel

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5.68 ZŁ net + 23% VAT / pcs

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Give us a call +48 888 99 98 98 alternatively contact us through contact form the contact page.
Lifting power along with structure of neodymium magnets can be checked using our magnetic calculator.

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UMC 20x6/3x7 / N38 - cylindrical magnetic holder

Specification/characteristics UMC 20x6/3x7 / N38 - cylindrical magnetic holder

properties

values

Cat. no.

320407

GTIN

5906301814634

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

6/3 mm [±0,1 mm]

Height

7 mm [±0,1 mm]

Weight

12 g [±0,1 mm]

Load capacity ~ ?

6 kg / 58.84 N

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

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Advantages as well as disadvantages of neodymium magnets NdFeB.

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

They do not lose their even over around ten years – the reduction of power is only ~1% (according to tests),
They show exceptional resistance to demagnetization from external magnetic fields,
Because of the lustrous layer of gold, the component looks visually appealing,
The outer field strength of the magnet shows advanced magnetic properties,
These magnets tolerate high temperatures, often exceeding 230°C, when properly designed (in relation to profile),
Thanks to the freedom in shaping and the capability to adapt to specific requirements, neodymium magnets can be created in various configurations, which broadens their application range,
Important function in modern technologies – they are used in data storage devices, electric drives, medical equipment or even sophisticated instruments,
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 neodymium magnets:

They may fracture when subjected to a powerful impact. If the magnets are exposed to physical collisions, we recommend in a steel housing. The steel housing, in the form of a holder, protects the magnet from cracks , and at the same time enhances its overall durability,
They lose field intensity at elevated temperatures. Most neodymium magnets experience permanent degradation in strength when heated above 80°C (depending on the form and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
Magnets exposed to moisture can corrode. Therefore, for outdoor applications, it's best to use waterproof types made of non-metallic composites,
The use of a protective casing or external holder is recommended, since machining internal cuts in neodymium magnets is risky,
Possible threat from tiny pieces may arise, in case of ingestion, which is significant in the family environments. Additionally, small elements from these magnets have the potential to disrupt scanning after being swallowed,
In cases of large-volume purchasing, neodymium magnet cost may be a barrier,

Be Cautious with Neodymium Magnets

Neodymium magnets are not recommended for 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.

Under no circumstances should neodymium magnets be brought close to GPS and smartphones.

Magnetic fields interfere with compasses and magnetometers used in navigation for air and sea transport, as well as internal compasses of smartphones and GPS devices.

Neodymium magnets are among the strongest magnets on Earth. The surprising force they generate between each other can shock you.

Make sure to review all the information we have provided. This will help you avoid harm to your body and damage to the magnets.

Magnets should not be treated as toys. Therefore, it is not recommended for children to have access to them.

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.

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.

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

The strong magnetic field generated by neodymium magnets can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other devices. They can also destroy videos, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium magnets can become demagnetized 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.

Neodymium magnetic are highly susceptible to damage, resulting in shattering.

Magnets made of neodymium are highly fragile, and by joining them in an uncontrolled manner, they will break. Neodymium magnetic are made of metal and coated with a shiny nickel, but they are not as durable 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.

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.

It is crucial not to allow the magnets to pinch together uncontrollably or place your fingers in their path as they attract to each other.

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

Safety precautions!

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