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UMGZ 36x18x8 [M6] GZ / N38 - magnetic holder external thread

magnetic holder external thread

Catalog no 190325

GTIN: 5906301813842

5

Diameter Ø [±0,1 mm]

36 mm

Height [±0,1 mm]

18 mm

Height [±0,1 mm]

8 mm

Weight

50 g

Load capacity

40 kg / 392.27 N

24.97 with VAT / pcs + price for transport

20.30 ZŁ net + 23% VAT / pcs

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UMGZ 36x18x8 [M6] GZ / N38 - magnetic holder external thread

Specification/characteristics UMGZ 36x18x8 [M6] GZ / N38 - magnetic holder external thread
properties
values
Cat. no.
190325
GTIN
5906301813842
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
36 mm [±0,1 mm]
Height
18 mm [±0,1 mm]
Height
8 mm [±0,1 mm]
Weight
50 g [±0,1 mm]
Load capacity ~ ?
40 kg / 392.27 N
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

Mounts with built-in neodymium magnets featuring an external thread offer robust solutions, applied across various fields, such as automotive, light industry, or assembly technology. Their design relies on a high-performance neodymium magnet, embedded in metal casing coated with zinc and nickel. The external thread in sizes M4–M8 allows installation onto compatible surfaces, which enables to fasten nameplates, lighting, tools. Thanks to a focused magnetic field, these holders provide a holding force from 3 to 68 kg, depending on the model and size. Their use include not only workshops and home installations. Some versions feature a rubber coating, which safeguards mounted elements from scratches and increases grip. Note, however, that neodymium magnets can be fragile and may break under excessive tightening. Careful handling is advised, and holders should be kept away from electronics. To ensure reliability, it is advisable to choose certified products.

Advantages and disadvantages of neodymium magnets NdFeB.

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

  • They have constant strength, and over more than 10 years their attraction force decreases symbolically – ~1% (in testing),
  • They are extremely resistant to demagnetization caused by external field interference,
  • By applying a bright layer of gold, the element gains a clean look,
  • They have extremely strong 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,
  • Thanks to the possibility in shaping and the capability to adapt to individual requirements, neodymium magnets can be created in various configurations, which broadens their application range,
  • Significant impact in cutting-edge sectors – they are used in computer drives, rotating machines, clinical machines or even technologically developed systems,
  • Compactness – despite their small size, they generate strong force, making them ideal for precision applications

Disadvantages of rare earth magnets:

  • They are fragile when subjected to a sudden impact. If the magnets are exposed to shocks, it is suggested to place them in a protective case. The steel housing, in the form of a holder, protects the magnet from cracks , and at the same time strengthens its overall robustness,
  • High temperatures may significantly reduce the strength of neodymium magnets. Typically, above 80°C, they experience permanent deterioration in performance (depending on size). To prevent this, we offer heat-resistant magnets marked [AH], capable of working up to 230°C, which makes them perfect for high-temperature use,
  • Magnets exposed to moisture can oxidize. Therefore, for outdoor applications, it's best to use waterproof types made of coated materials,
  • Using a cover – such as a magnetic holder – is advised due to the restrictions in manufacturing complex structures directly in the magnet,
  • Potential hazard related to magnet particles may arise, especially if swallowed, which is significant in the context of child safety. It should also be noted that miniature parts from these magnets might complicate medical imaging if inside the body,
  • In cases of mass production, neodymium magnet cost may not be economically viable,

Handle with Care: Neodymium Magnets

Neodymium magnetic are extremely fragile, leading to their cracking.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. They are coated with a shiny nickel plating similar to steel, but they are not as hard. At the moment of collision between the magnets, small sharp metal pieces can be propelled in various directions at high speed. Eye protection is recommended.

Keep neodymium magnets away from people with pacemakers.

Neodymium magnets produce strong magnetic fields that can interfere with the operation of a heart pacemaker. Even if the magnetic field does not affect the device, it can damage its components or deactivate the entire device.

Neodymium Magnets can attract to each other due to their immense internal force, causing the skin and other body parts to get pinched and resulting in significant injuries.

Neodymium magnets will bounce and also clash together within a distance of several to around 10 cm from each other.

Do not bring neodymium magnets close to GPS and smartphones.

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

Dust and powder from neodymium magnets are highly flammable.

Avoid drilling or mechanical processing of neodymium magnets. Once crushed into fine powder or dust, this material becomes highly flammable.

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

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

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

Magnetic 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 can demagnetize at high temperatures.

Although magnets have shown to retain their effectiveness up to 80°C or 175°F, this temperature may vary depending on the type of material, shape, and intended use of the magnet.

Neodymium magnets are the strongest magnets ever invented. Their strength can shock you.

To handle 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.

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

Neodymium magnets are not toys. Do not allow children to play with them. In the case of swallowing multiple magnets simultaneously, they can attract to each other through the intestinal walls. In the worst case scenario, this can lead to death.

Be careful!

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

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