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neodymium magnets

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

Magnet for treasure hunters F300 GOLD

Where to purchase strong neodymium magnet? Holders with magnets in airtight, solid steel casing are ideally suited for use in difficult, demanding climate conditions, including in the rain and snow see more...

magnets with holders

Magnetic holders can be used to facilitate production processes, underwater discoveries, or searching for meteors made of metal more information...

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UMP 65x45 [M8] GW - search holder

search holder

Catalog no 210259

GTIN: 5906301813927

0

Diameter Ø [±0,1 mm]

65 mm

Height [±0,1 mm]

45 mm

Weight

1150 g

Load capacity

230 kg / 2255.53 N

Coating

[NiCuNi] nickel

150.00 with VAT / pcs + price for transport

121.95 ZŁ net + 23% VAT / pcs

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Parameters as well as structure of a magnet can be estimated on our modular calculator.

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UMP 65x45 [M8] GW - search holder

Specification/characteristics UMP 65x45 [M8] GW - search holder
properties
values
Cat. no.
210259
GTIN
5906301813927
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
65 mm [±0,1 mm]
Height
45 mm [±0,1 mm]
Weight
1150 g [±0,1 mm]
Load capacity ~ ?
230 kg / 2255.53 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 65x45 [M8] GW, which is very powerful and has an impressive magnetic pulling force of approximately ~230 kg. This model is perfect for locating metal objects at the bottom of water bodies.
Neodymium magnets are highly effective for retrieving in water environments due to their strong attraction capability. UMP 65x45 [M8] GW weighing 1150 grams with a pulling force of ~230 kg is a great choice for recovering 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 attraction strength. UMP 65x45 [M8] GW has a pulling force of approximately ~230 kg, making it a effective solution for retrieving objects with significant mass. Remember that the full power 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 65x45 [M8] GW with a pulling force of ~230 kg, maximum power are achieved with the upper holder, while the side attachment offers only 10%-25% of the stated power.
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 five times lower! Any gap between the magnet and the plate can cause a reduction in the lifting force.
magnetic holder strength F200 GOLD F300 GOLD

Advantages as well as disadvantages of neodymium magnets NdFeB.

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

  • They do not lose their magnetism, even after around ten years – the reduction of power is only ~1% (theoretically),
  • Their ability to resist magnetic interference from external fields is notable,
  • Because of the brilliant layer of gold, the component looks aesthetically refined,
  • They possess significant magnetic force measurable at the magnet’s surface,
  • Neodymium magnets are known for very high magnetic induction and the ability to work at temperatures up to 230°C or higher (depending on the magnetic form),
  • The ability for precise shaping and adaptation to custom needs – neodymium magnets can be manufactured in many forms and dimensions, which enhances their versatility in applications,
  • Important function in advanced technical fields – they serve a purpose in HDDs, rotating machines, diagnostic apparatus as well as other advanced devices,
  • Relatively small size with high magnetic force – neodymium magnets offer strong power in small dimensions, which makes them ideal in small systems

Disadvantages of magnetic elements:

  • They are fragile when subjected to a heavy impact. If the magnets are exposed to external force, it is suggested to place them in a protective enclosure. The steel housing, in the form of a holder, protects the magnet from damage and additionally enhances its overall strength,
  • Magnets lose field strength when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible field weakening (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,
  • Due to corrosion risk in humid conditions, it is wise to use sealed magnets made of rubber for outdoor use,
  • Limited ability to create internal holes in the magnet – the use of a external casing is recommended,
  • Safety concern from tiny pieces may arise, if ingested accidentally, which is significant in the family environments. Furthermore, miniature parts from these assemblies have the potential to interfere with diagnostics once in the system,
  • Due to the price of neodymium, their cost is above average,

Precautions with Neodymium Magnets

 Maintain neodymium magnets far from children.

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.

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

To handle 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.

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

Magnets will attract each other within a distance of several to about 10 cm from each other. Remember not to put fingers between magnets or alternatively in their path when attract. Depending on how massive the neodymium magnets are, they can lead to a cut or a fracture.

Avoid bringing neodymium magnets close to a phone or GPS.

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

Keep neodymium magnets away from 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.

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

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. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.

Neodymium magnets can demagnetize at high temperatures.

Under specific conditions, Neodymium magnets may experience demagnetization when subjected to high temperatures.

Neodymium magnets are extremely fragile, resulting in breaking.

Magnets made of neodymium are extremely delicate, 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. At the moment of collision between the magnets, sharp metal fragments can be dispersed in different directions.

The magnet is coated with nickel - be careful 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.

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.

Exercise caution!

In order for you to know how strong neodymium magnets are and why they are so dangerous, see the article - Dangerous very strong neodymium magnets.

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tel: +48 888 99 98 98