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neodymium magnets

We offer blue color magnetic Nd2Fe14B - our store's offer. All magnesy neodymowe on our website are in stock for immediate purchase (check the list). See the magnet pricing for more details check the magnet price list

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UMC 75x11/6x18 / N38 - cylindrical magnetic holder

cylindrical magnetic holder

Catalog no 320414

GTIN: 5906301814702

5

Diameter [±0,1 mm]

75 mm

internal diameter Ø [±0,1 mm]

11/6 mm

Height [±0,1 mm]

18 mm

Weight

465 g

Load capacity

155 kg / 1520.03 N

Coating

[NiCuNi] nickel

169.86 with VAT / pcs + price for transport

138.10 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 1 pcs
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Pick up the phone and ask +48 888 99 98 98 alternatively send us a note via inquiry form our website.
Force and appearance of neodymium magnets can be analyzed using our modular calculator.

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UMC 75x11/6x18 / N38 - cylindrical magnetic holder

Specification/characteristics UMC 75x11/6x18 / N38 - cylindrical magnetic holder
properties
values
Cat. no.
320414
GTIN
5906301814702
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter
75 mm [±0,1 mm]
internal diameter Ø
11/6 mm [±0,1 mm]
Height
18 mm [±0,1 mm]
Weight
465 g [±0,1 mm]
Load capacity ~ ?
155 kg / 1520.03 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
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

Advantages as well as disadvantages of neodymium magnets NdFeB.

Apart from their superior power, neodymium magnets have these key benefits:

  • They virtually do not lose strength, because even after ten years, the performance loss is only ~1% (based on calculations),
  • They are highly resistant to demagnetization caused by external magnetic fields,
  • Because of the reflective layer of silver, the component looks visually appealing,
  • They possess significant magnetic force measurable at the magnet’s surface,
  • 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 precise design, these magnets can be produced in various shapes and sizes, greatly improving design adaptation,
  • Significant impact in new technology industries – they are used in computer drives, electric motors, healthcare devices and technologically developed systems,
  • Thanks to their power density, small magnets offer high magnetic performance, in miniature format,

Disadvantages of neodymium magnets:

  • They can break when subjected to a powerful impact. If the magnets are exposed to external force, it is suggested to place them in a steel housing. The steel housing, in the form of a holder, protects the magnet from cracks and enhances its overall resistance,
  • They lose field intensity at elevated temperatures. Most neodymium magnets experience permanent reduction in strength when heated above 80°C (depending on the dimensions and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
  • Due to corrosion risk in humid conditions, it is common to use sealed magnets made of protective material for outdoor use,
  • Limited ability to create complex details in the magnet – the use of a external casing is recommended,
  • Potential hazard due to small fragments may arise, if ingested accidentally, which is notable in the health of young users. Additionally, minuscule fragments from these assemblies have the potential to interfere with diagnostics after being swallowed,
  • Higher purchase price is an important factor to consider compared to ceramic magnets, especially in budget-sensitive applications

Exercise Caution with Neodymium Magnets

You should maintain neodymium magnets at a safe distance from the wallet, computer, and TV.

Neodymium magnets produce intense magnetic fields that can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also destroy videos, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium magnetic are especially fragile, which leads to their breakage.

Neodymium magnets are fragile and will shatter if allowed to collide with each other, even from a distance of a few centimeters. They are coated with a shiny nickel plating similar to steel, but they are not as hard. At the moment of connection between the magnets, tiny sharp metal fragments can be propelled in various directions at high speed. Eye protection is recommended.

  Magnets are not toys, youngest should not play with them.

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 are the strongest, most remarkable magnets on earth, and the surprising force between them can shock you at first.

Please review the information on how to handle neodymium magnets and avoid significant harm to your body, as well as prevent unintentional damage to the magnets.

Dust and powder from neodymium magnets are 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.

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, you can try wearing gloves or simply avoid direct contact with nickel-plated neodymium magnets.

Neodymium magnets can demagnetize at high temperatures.

Whilst Neodymium magnets can demagnetize at high temperatures, it's important to note that the extent of this effect can vary based on factors such as the magnet's material, shape, and intended application.

Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.

Magnets will attract each other within a distance of several to around 10 cm from each other. Remember not to insert fingers between magnets or in their path when they attract. Magnets, depending on their size, can even cut off a finger or alternatively there can be a serious pressure or a fracture.

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 happens because such devices have a function to deactivate them in a magnetic field.

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.

Warning!

Please see 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