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neodymium magnets

We offer blue color magnets Nd2Fe14B - our proposal. Practically all magnesy neodymowe on our website are available for immediate purchase (see the list). See the magnet pricing for more details see the magnet price list

Magnets for treasure hunters F400 GOLD

Where to buy strong magnet? Holders with magnets in solid and airtight enclosure are perfect for use in difficult, demanding weather conditions, including during snow and rain more information...

magnets with holders

Magnetic holders can be used to improve production processes, underwater discoveries, or locating meteors made of metal more information...

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UMP 79x50 [M8] GW - search holder

search holder

Catalog no 210260

GTIN: 5906301813934

0

Diameter Ø [±0,1 mm]

79 mm

Height [±0,1 mm]

50 mm

Weight

1.95 g

Load capacity

340 kg / 3334.26 N

Coating

[NiCuNi] nickel

270.00 with VAT / pcs + price for transport

219.51 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
219.51 ZŁ
270.00 ZŁ
price from 5 pcs
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price from 12 pcs
193.17 ZŁ
237.60 ZŁ

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Call us +48 888 99 98 98 if you prefer contact us using our online form through our site.
Strength along with shape of a neodymium magnet can be checked using our online calculation tool.

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UMP 79x50 [M8] GW - search holder

Specification/characteristics UMP 79x50 [M8] GW - search holder
properties
values
Cat. no.
210260
GTIN
5906301813934
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
79 mm [±0,1 mm]
Height
50 mm [±0,1 mm]
Weight
1.95 g [±0,1 mm]
Load capacity ~ ?
340 kg / 3334.26 N
Coating
[NiCuNi] nickel
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material

properties
values
units

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

For exploring rivers and lakes, we recommend UMP 79x50 [M8] GW, which is very powerful and has an impressive magnetic pulling force of approximately ~340 kg. This model is perfect for locating metal objects at the bottom of water bodies.
Neodymium magnets are ideal for retrieving in water due to their powerful strength. UMP 79x50 [M8] GW weighing 1.95 grams with a pulling force of ~340 kg is a great choice for finding lost treasures.
When choosing a magnetic holder for water exploration, you should pay attention to the number of Gauss or Tesla value, which determines the lifting force. UMP 79x50 [M8] GW has a pulling force of approximately ~340 kg, making it a powerful tool for retrieving objects with significant mass. Remember that the maximum strength is achieved with the upper holder, while the side attachment offers only 10%-25% of that power.
The sliding force of a magnet is typically lower than the perpendicular force because it depends on the fraction of the magnetic field that interacts with the metal surface. In the case of UMP 79x50 [M8] GW with a lifting capacity of ~340 kg, full capabilities are achieved with the top attachment, while the side attachment offers only one-fourth to one-quarter of the declared force.
he attraction force was measured under laboratory conditions, using a smooth S235 low-carbon steel plate with a thickness of 10 mm, with the application of pulling force in a vertical manner. In a situation where the sliding occurs, the magnet's lifting capacity can be 5 times lower! Any gap between the magnet and the plate can result in a reduction in the attraction force.
magnetic pot strength F200 GOLD F300 GOLD

Advantages and disadvantages of neodymium magnets NdFeB.

Besides their durability, neodymium magnets are valued for these benefits:

  • They retain their attractive force for around 10 years – the drop is just ~1% (in theory),
  • They protect against demagnetization induced by surrounding magnetic fields very well,
  • The use of a mirror-like nickel surface provides a eye-catching finish,
  • They have very high magnetic induction on the surface of the magnet,
  • Neodymium magnets are known for strong magnetic induction and the ability to work at temperatures up to 230°C or higher (depending on the geometry),
  • With the option for tailored forming and targeted design, these magnets can be produced in numerous shapes and sizes, greatly improving design adaptation,
  • Key role in modern technologies – they are utilized in hard drives, electric drives, medical equipment along with sophisticated instruments,
  • Relatively small size with high magnetic force – neodymium magnets offer impressive pulling strength in compact dimensions, which makes them ideal in miniature devices

Disadvantages of rare earth magnets:

  • They are fragile when subjected to a sudden impact. If the magnets are exposed to external force, they should be placed in a protective case. The steel housing, in the form of a holder, protects the magnet from damage and increases its overall strength,
  • Magnets lose field strength when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible performance loss (influenced by the magnet’s dimensions). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
  • Due to corrosion risk in humid conditions, it is wise to use sealed magnets made of rubber for outdoor use,
  • Limited ability to create threads in the magnet – the use of a external casing is recommended,
  • Potential hazard related to magnet particles may arise, in case of ingestion, which is important in the health of young users. Moreover, tiny components from these assemblies have the potential to hinder health screening after being swallowed,
  • High unit cost – neodymium magnets are costlier than other types of magnets (e.g., ferrite), which may limit large-scale applications

Handle with Care: Neodymium Magnets

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 is because many of these devices are equipped with a function that deactivates the device in a magnetic field.

  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.

The magnet coating is made of nickel, so be cautious 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, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.

Neodymium magnets are the most powerful, most remarkable magnets on the planet, and the surprising force between them can surprise you at first.

On our website, you can find information on how to use neodymium magnets. This will help you avoid injuries and prevent damage to the magnets.

Neodymium magnets can become demagnetized at high temperatures.

Although magnets have demonstrated their effectiveness up to 80°C or 175°F, the temperature can vary depending on the type, shape, and intended use of the specific magnet.

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

The strong magnetic field generated by neodymium magnets can damage magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, or other devices. They can also destroy videos, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

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.

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.

It is crucial not to allow the magnets to pinch together uncontrollably or place your fingers in their path as they attract to each other.

Magnets will attract each other within a distance of several to around 10 cm from each other. Remember not to put 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.

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

Neodymium magnets are characterized by considerable fragility. Neodymium magnets are made of metal and coated with a shiny nickel, but they are not as durable as steel. At the moment of collision between the magnets, sharp metal fragments can be dispersed in different directions.

Pay attention!

So you are aware of why neodymium magnets are so dangerous, see the article titled How dangerous are powerful neodymium magnets?.

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e-mail: bok@dhit.pl

tel: +48 888 99 98 98