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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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Magnetic holders featuring internal thread can be versatile tools, used across manufacturing and household applications, such as engineering. They consist of a magnetic core, typically neodymium, enclosed in a steel shell, covered with zinc to prevent rusting. The female thread, available in sizes from M4 to M8, allows insertion of screws, which facilitates installation of various components, such as signs, instruments, or lights. They work via a powerful magnetic zone, which concentrates at the mounting point, ensuring holding force ranging from one to sixty kilograms, based on mounting dimensions. They are especially useful in vehicle manufacturing, e.g. for securing car body components, as well as in marketing, for hanging banners. Certain types have a rubber coating, e.g. in black or yellow, helping prevent surface damage and improves moisture resistance. Advantages include high durability, ease of installation thanks to the thread, and the ability to transport heavy ferromagnetic objects. Still, the grip strength relies on surface thickness, material used, or distance between the holder and the component. Preventing mechanical shocks is crucial, as NdFeB magnets are brittle, and overtightening the screw may be dangerous. In addition, a strong magnetic field may affect electronic devices, like phones or data carriers, therefore mounts should be stored away from those devices. It is recommended to choose holders from reputable manufacturers, to guarantee reliability and safety during use.

Advantages and disadvantages of neodymium magnets NdFeB.

Apart from immense power, 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 highly resistant to demagnetization by external magnetic field,
By applying a shiny coating of nickel, gold, or silver, the element gains an aesthetic appearance,
They exhibit very high magnetic induction on the surface of the magnet,
By using an appropriate combination of materials, they can achieve significant thermal resistance, allowing them to operate at temperatures up to 230°C and above...
Due to the option of accurate forming and adaptation to individual needs – neodymium magnets can be produced in a wide range of shapes and sizes, which enhances their versatility in applications.
Key role in advanced technologically fields – are utilized in HDD drives, electric motors, medical equipment or other advanced devices.

Disadvantages of neodymium magnets:

They are prone to breaking as they are fragile when subjected to a strong impact. If the magnets are exposed to impacts, it is suggested using magnets in a protective case. The steel housing in the form of a holder protects the magnet from impacts and simultaneously increases its overall strength,
They lose power at high temperatures. Most neodymium magnets experience permanent loss of strength when heated above 80°C (depending on the form and height). However, we also offer special magnets with high temperature resistance, up to 230°C,
They rust in a humid environment - during outdoor use, we recommend using waterproof magnets, such as those made of rubber or plastic,
Limited ability to create threads or complex shapes in the magnet - the use of a housing is recommended - magnetic holder
Health risk to health from tiny fragments of magnets pose a threat, in case of ingestion, which becomes significant in the aspect of protecting young children. Additionally, small elements of these magnets have the potential to be problematic in medical diagnosis in case of swallowing.

Precautions

Neodymium magnets can become demagnetized at high temperatures.

In certain circumstances, Neodymium magnets may experience demagnetization when subjected to high temperatures.

Neodymium magnets can attract to each other, pinch the skin, and cause significant swellings.

Magnets may crack or alternatively crumble with careless connecting to each other. Remember not to move them to each other or have them firmly in hands at a distance less than 10 cm.

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.

Neodymium magnets are over 10 times stronger than ferrite magnets (the ones in speakers), and their strength can shock you.

Read the information on our website on how to properly utilize neodymium magnets and avoid significant harm to your body and unintentional disruption to the magnets.

Never bring neodymium magnets close to a phone and GPS.

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.

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.

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 shattering.

Neodymium magnets are highly fragile, and by joining them in an uncontrolled manner, they will crack. Neodymium magnets are made of metal and coated with a shiny nickel surface, but they are not as hard 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.

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

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

Magnets are not toys, children 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.

Exercise caution!

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