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neodymium magnets

We provide yellow color magnetic Nd2Fe14B - our offer. All "magnets" in our store are available for immediate purchase (see the list). Check out the magnet pricing for more details see the magnet price list

Magnets for water searching F200 GOLD

Where to buy very strong neodymium magnet? Holders with magnets in solid and airtight steel casing are excellent for use in challenging weather, including in the rain and snow see more...

magnets with holders

Holders with magnets can be applied to improve production, underwater discoveries, or locating meteors from gold check...

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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:

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price from 1 pcs
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Weight and form of neodymium magnets can be verified on our modular calculator.

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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 underwater searches, we recommend UMP 79x50 [M8] GW, which is exceptionally strong 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.
Magnetic holders are highly effective 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 underwater searches, you should pay attention to the number of Gauss or Tesla value, which determines the attraction strength. 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 top attachment, while the side attachment offers only 10%-25% of that power.
The sideways force of a magnet is typically lower than the adhesive 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 pulling force of ~340 kg, maximum power are achieved with the upper holder, while the side attachment offers only 10%-25% of the declared force.
he Lifting force was measured under test conditions, using a smooth S235 low-carbon steel plate with a thickness of 10 mm, with the application of pulling force in a perpendicular manner. In a situation where the sliding occurs, the magnet's attraction force can be 5 times lower! Any gap between the magnet and the plate can result in a reduction in the lifting force.
magnetic pot strength F200 GOLD F300 GOLD

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their immense strength, neodymium magnets offer the following advantages:

  • They virtually do not lose strength, because even after ten years, the decline in efficiency is only ~1% (according to literature),
  • Their ability to resist magnetic interference from external fields is notable,
  • Thanks to the shiny finish and gold coating, they have an visually attractive appearance,
  • The outer field strength of the magnet shows elevated magnetic properties,
  • Thanks to their exceptional temperature resistance, they can operate (depending on the form) even at temperatures up to 230°C or more,
  • Thanks to the flexibility in shaping and the capability to adapt to unique requirements, neodymium magnets can be created in diverse shapes and sizes, which broadens their functional possibilities,
  • Important function in modern technologies – they are used in computer drives, electric motors, clinical machines or even sophisticated instruments,
  • Thanks to their concentrated strength, small magnets offer high magnetic performance, while occupying minimal space,

Disadvantages of neodymium magnets:

  • They can break when subjected to a strong impact. If the magnets are exposed to physical collisions, we recommend in a steel housing. The steel housing, in the form of a holder, protects the magnet from fracture while also increases its overall durability,
  • Magnets lose pulling force when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible magnetic decay (influenced by the magnet’s profile). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
  • Magnets exposed to humidity can rust. Therefore, for outdoor applications, it's best to use waterproof types made of plastic,
  • Limited ability to create threads in the magnet – the use of a mechanical support is recommended,
  • Possible threat due to small fragments may arise, in case of ingestion, which is significant in the protection of children. It should also be noted that miniature parts from these assemblies have the potential to disrupt scanning after being swallowed,
  • Due to a complex production process, their cost is relatively high,

Precautions with 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 demagnetize 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.

Neodymium magnetic are especially fragile, which leads to damage.

Neodymium magnets are characterized by considerable fragility. Neodymium magnetic 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, small metal fragments can be dispersed in different directions.

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

Strong 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.

Comparing neodymium magnets to ferrite magnets (found in speakers), they are 10 times more powerful, and their power can surprise you.

To use 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.

Avoid contact with neodymium magnets if you have a nickel 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.

  Neodymium magnets should not be in the vicinity youngest children.

Not all neodymium magnets are toys, so do not let children play with them. In such a situation, surgery is necessary to remove them. In the worst case scenario, it can result in death.

Magnets will attract to each other, so remember not to allow them to pinch together without control or place your fingers in their path.

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

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.

Dust and powder from neodymium magnets are highly 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.

Caution!

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

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tel: +48 888 99 98 98