← previous

Product available shipping tomorrow

UMGGW 66x8.5 [M8] GW / N38 - magnetic holder rubber internal thread

magnetic holder rubber internal thread

Catalog no 160308

GTIN: 5906301813668

Diameter Ø [±0,1 mm]

66 mm

Height [±0,1 mm]

8.5 mm

Weight

100 g

Load capacity

18.4 kg / 180.44 N

23.37 ZŁ with VAT / pcs + price for transport

19.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

19.00 ZŁ

23.37 ZŁ

price from 11 pcs

17.86 ZŁ

21.97 ZŁ

price from 43 pcs

16.72 ZŁ

20.57 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to negotiate the price?

Call us +48 22 499 98 98 or write via form on the contact page. Test the magnet's power with our power calculator.

Orders placed by 14:00 are shipped the same day.

UMGGW 66x8.5 [M8] GW / N38 - magnetic holder rubber internal thread

Specification/characteristics UMGGW 66x8.5 [M8] GW / N38 - magnetic holder rubber internal thread

properties

values

Cat. no.

160308

GTIN

5906301813668

Production/Distribution

Dhit sp. z o.o.

Country of origin

Poland / China / Germany

Customs code

85059029

Diameter Ø

66 mm [±0,1 mm]

Height

8.5 mm [±0,1 mm]

Weight

100 g [±0,1 mm]

Load capacity ~ ?

18.4 kg / 180.44 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

Shopping tips

Produkt dostępny wysyłka jutro!

MW 18.9x10 / N38 - cylindrical magnet

11.07 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MW 100x30 / N38 - cylindrical magnet

650.01 ZŁ / pcs

Produkt dostępny wysyłka jutro!

MPL 12x10x4 / N38 - lamellar magnet

1.89 ZŁ / pcs

Produkt dostępny wysyłka jutro!

UMH 75x18x68 [M8] / N38 - magnetic holder with hook

202.95 ZŁ / pcs

Mounting magnets with rubber coating and internal thread are used in various applications, from production to everyday situations. They are made of a strong neodymium magnet, enclosed in a rubber shell, which shields the magnet from scratches and enhances grip on sensitive substrates.

No! Magnetic holders are not recommended for people with heart implants, as the strong magnetic field may interfere with their function. For these individuals, we suggest using pin-type holders — we offer two such types in our range.

Advantages and disadvantages of neodymium magnets NdFeB.

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

They have unchanged lifting capacity, and over around 10 years their attraction force decreases symbolically – ~1% (in testing),
They show exceptional resistance to demagnetization from external magnetic fields,
In other words, due to the metallic nickel coating, the magnet obtains an stylish appearance,
Magnetic induction on the surface of these magnets is very strong,
Thanks to their enhanced temperature resistance, they can operate (depending on the form) even at temperatures up to 230°C or more,
The ability for custom shaping or adaptation to individual needs – neodymium magnets can be manufactured in a wide range of shapes and sizes, which extends the scope of their use cases,
Important function in new technology industries – they are utilized in HDDs, electric motors, medical equipment as well as other advanced devices,
Thanks to their concentrated strength, small magnets offer high magnetic performance, while occupying minimal space,

Disadvantages of rare earth magnets:

They can break when subjected to a strong impact. If the magnets are exposed to external force, it is advisable to use in a steel housing. The steel housing, in the form of a holder, protects the magnet from damage and increases its overall robustness,
High temperatures may significantly reduce the magnetic power of neodymium magnets. Typically, above 80°C, they experience permanent loss in performance (depending on height). 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,
They rust in a damp environment – during outdoor use, we recommend using waterproof magnets, such as those made of polymer,
Limited ability to create precision features in the magnet – the use of a mechanical support is recommended,
Health risk from tiny pieces may arise, if ingested accidentally, which is crucial in the family environments. It should also be noted that miniature parts from these devices can complicate medical imaging when ingested,
High unit cost – neodymium magnets are more expensive than other types of magnets (e.g., ferrite), which can restrict large-scale applications

We Recommend Caution with Neodymium Magnets

Do not give neodymium magnets to youngest children.

Remember that neodymium magnets are not toys. Be cautious and make sure no child plays with them. Small magnets can pose a serious choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing severe injuries, and even death.

People with pacemakers are advised to avoid neodymium magnets.

Neodymium magnets generate very strong magnetic fields that can interfere with the operation of a pacemaker. This happens because such devices have a function to deactivate them in a magnetic field.

Neodymium magnetic are noted for being fragile, which can cause them to crumble.

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. 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.

Neodymium magnets are the most powerful magnets ever invented. Their power 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 damage to the magnets.

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

Strong magnetic fields emitted by neodymium magnets can destroy magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. They can also damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.

Dust and powder from neodymium magnets are 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. Therefore, exercise caution if you have an 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.

Under no circumstances should neodymium magnets be brought 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.

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.

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

Neodymium magnets can become demagnetized at high temperatures.

Despite the general resilience of magnets, their ability to maintain their magnetic potency can be influenced by factors like the type of material used, the magnet's shape, and the intended purpose for which it is employed.

Safety precautions!

In order to illustrate why neodymium magnets are so dangerous, see the article - How dangerous are strong neodymium magnets?.