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UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread

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UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread

magnetic holder internal thread

Catalog no 180320

GTIN: 5906301813767

Diameter Ø [±0,1 mm]

42 mm

Height [±0,1 mm]

20 mm

Height [±0,1 mm]

9 mm

Weight

78 g

Load capacity

66 kg / 647.24 N

33.95 ZŁ with VAT / pcs + price for transport

27.60 ZŁ net + 23% VAT / pcs

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UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread

Specification/characteristics UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread

properties

values

Cat. no.

180320

GTIN

5906301813767

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

42 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Height

9 mm [±0,1 mm]

Weight

78 g [±0,1 mm]

Load capacity ~ ?

66 kg / 647.24 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

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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Neodymium magnetic mounts featuring female thread are versatile tools, used in manufacturing and everyday uses, such as construction. They contain a neodymium magnet, usually neodymium, embedded within a steel shell, covered with Zn layer for corrosion protection. The internal thread, available in sizes from M4 to M8, enables mounting bolts, which simplifies installation of various items, such as signs, tools, or lamps. They work via a powerful magnetic zone, which concentrates at the mounting point, ensuring load capacity from 1.3 kg to 60 kg, based on mounting dimensions. They are especially useful in vehicle manufacturing, for example, for securing car body components, as well as in advertising, for poster placement. Some models come with a rubber shell, e.g. in black or yellow, helping prevent surface damage and increases resistance to dampness. Benefits include high durability, simple mounting thanks to the thread, and the ability to transport heavy ferromagnetic objects. However, the grip strength relies on surface thickness, type of steel, and the gap between holder and object. It’s important to avoid impacts, as NdFeB magnets are brittle, and overtightening the screw may be dangerous. Moreover, a strong magnetic field may affect electronic devices, such as smartphones or magnetic cards, therefore mounts should be stored away from those devices. Choosing mounts from trusted suppliers is advised, to ensure high quality and safe use during operation.

Advantages as well as disadvantages of neodymium magnets NdFeB.

Apart from immense strength, neodymium magnets have the following advantages:

They do not lose strength over time - after 10 years, their power decreases by only ~1% (theoretically),
They are exceptionally resistant to demagnetization caused by an external magnetic field,
By applying a shiny coating of nickel, gold, or silver, the element gains an aesthetic appearance,
They have very high magnetic induction on the surface of the magnet,
Thanks to their high temperature resistance, they can operate (depending on the form) even at temperatures up to 230°C and above...
The ability for precise shaping and customization to specific needs – neodymium magnets can be produced in various forms and dimensions, which amplifies their universality in usage.
Key role in modern technologies – are used in computer drives, electric drive mechanisms, medical apparatus or other advanced devices.

Disadvantages of neodymium magnets:

They are fragile when subjected to a strong impact. If the magnets are exposed to impacts, we recommend using magnets in a protective case. The steel housing in the form of a holder protects the magnet from impacts, and at the same time increases its overall strength,
Magnets lose their power due to exposure to high temperatures. In most cases, when the temperature exceeds 80°C, these magnets experience permanent loss in strength (although it is worth noting that this is dependent on the shape and size of the magnet). To avoid this problem, we offer special magnets marked with the [AH] symbol, which exhibit high temperature resistance. They can operate even at temperatures as high as 230°C or more,
Magnets exposed to a humid environment can corrode. Therefore, when using them outdoors, we recommend using waterproof magnets made of rubber, plastic, or other moisture-resistant materials,
The use of a cover or a magnetic holder is recommended due to the limited possibilities of manufacturing threads or complex shapes in the magnet
Health risk to health from tiny fragments of magnets pose a threat, in case of ingestion, which is crucial in the aspect of protecting young children. It's also worth noting that small elements of these devices are able to be problematic in medical diagnosis after entering the body.

Handle Neodymium Magnets Carefully

Neodymium magnets can become demagnetized 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.

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.

Under no circumstances should neodymium magnets be placed near a computer HDD, TV, and wallet.

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, etc. devices. They can also damage videos, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Keep neodymium magnets away from people with pacemakers.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes 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.

Do not bring neodymium magnets close to GPS and smartphones.

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

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

Neodymium magnets are not toys. Be cautious and make sure no child plays 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.

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 swellings.

If joining of neodymium magnets is not under control, then they may crumble and crack. You can't move them to each other. At a distance less than 10 cm you should have them very firmly.

Neodymium magnets are characterized by their fragility, which can cause them to shatter.

Neodymium magnets are delicate as well as will shatter if allowed to collide with each other, even from a distance of a few centimeters. Despite being made of metal and coated with a shiny nickel plating, they are not as hard as steel. In the case of a collision between two magnets, there can be a scattering of small sharp metal fragments in different directions. Protecting your eyes is essential.

If you have a nickel allergy, avoid contact with neodymium magnets.

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 are the strongest magnets ever created, and their strength can surprise you.

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

Safety rules!

So you are aware of why neodymium magnets are so dangerous, read the article titled How dangerous are very strong neodymium magnets?.