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neodymium magnets

We offer yellow color magnets Nd2Fe14B - our store's offer. All magnesy on our website are available for immediate delivery (check the list). Check out the magnet pricing for more details check the magnet price list

Magnets for water searching F400 GOLD

Where to buy very strong neodymium magnet? Magnet holders in solid and airtight steel casing are excellent for use in difficult weather, including in the rain and snow read...

magnets with holders

Holders with magnets can be applied to improve manufacturing, underwater discoveries, or locating meteors made of ore read...

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UMP 75x24 [M8+M10] GW F200 Lina / N38 - search holder

search holder

Catalog no 210382

GTIN: 5906301814016

5

Diameter Ø [±0,1 mm]

75 mm

Height [±0,1 mm]

24 mm

Weight

0.9 g

Load capacity

280 kg / 2745.86 N

Coating

[NiCuNi] nickel

230.00 with VAT / pcs + price for transport

186.99 ZŁ net + 23% VAT / pcs

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UMP 75x24 [M8+M10] GW F200 Lina / N38 - search holder

Specification/characteristics UMP 75x24 [M8+M10] GW F200 Lina / N38 - search holder
properties
values
Cat. no.
210382
GTIN
5906301814016
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
75 mm [±0,1 mm]
Height
24 mm [±0,1 mm]
Weight
0.9 g [±0,1 mm]
Load capacity ~ ?
280 kg / 2745.86 N
Coating
[NiCuNi] nickel
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
T
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
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 75x24 [M8+M10] GW F200 Lina / N38, which is exceptionally strong and has an impressive magnetic pulling force of approximately ~280 kg. This model is ideal for locating metal objects at the bottom of water bodies.
Magnetic holders are efficient for searching in water environments due to their high lifting force. UMP 75x24 [M8+M10] GW F200 Lina / N38 weighing 0.9 grams with a pulling force of ~280 kg is a perfect solution for finding lost treasures.
When choosing a magnet for water exploration, you should pay attention to the number of Gauss or Tesla value, which determines the lifting force. UMP 75x24 [M8+M10] GW F200 Lina / N38 has a pulling force of approximately ~280 kg, making it a effective solution for recovering heavier items. 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 75x24 [M8+M10] GW F200 Lina / N38 with a pulling force of ~280 kg, full capabilities are achieved with the upper holder, while the side holder offers only one-fourth to one-quarter of the stated power.
he Lifting force was measured under laboratory conditions, using a smooth S235 low-carbon steel plate with a thickness of 10 mm, with the application of lifting force in a vertical manner. In a situation where the force acts parallelly, the magnet's attraction force can be five 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.

Apart from their strong holding force, neodymium magnets have these key benefits:

  • They virtually do not lose power, because even after ten years, the decline in efficiency is only ~1% (based on calculations),
  • They show exceptional resistance to demagnetization from external field exposure,
  • Because of the reflective layer of gold, the component looks visually appealing,
  • Magnetic induction on the surface of these magnets is impressively powerful,
  • Neodymium magnets are known for strong magnetic induction and the ability to work at temperatures up to 230°C or higher (depending on the magnetic form),
  • The ability for accurate shaping and adaptation to specific needs – neodymium magnets can be manufactured in multiple variants of geometries, which enhances their versatility in applications,
  • Key role in advanced technical fields – they serve a purpose in data storage devices, electromechanical systems, diagnostic apparatus along with sophisticated instruments,
  • Compactness – despite their small size, they provide high effectiveness, making them ideal for precision applications

Disadvantages of NdFeB magnets:

  • They may fracture when subjected to a heavy impact. If the magnets are exposed to shocks, it is advisable to use in a steel housing. The steel housing, in the form of a holder, protects the magnet from fracture and additionally reinforces its overall resistance,
  • They lose power at increased temperatures. Most neodymium magnets experience permanent reduction in strength when heated above 80°C (depending on the geometry and height). However, we offer special variants with high temperature resistance that can operate up to 230°C or higher,
  • Magnets exposed to wet conditions can rust. Therefore, for outdoor applications, it's best to use waterproof types made of coated materials,
  • Using a cover – such as a magnetic holder – is advised due to the challenges in manufacturing threads directly in the magnet,
  • Health risk from tiny pieces may arise, in case of ingestion, which is notable in the protection of children. Furthermore, small elements from these assemblies have the potential to disrupt scanning if inside the body,
  • Due to expensive raw materials, their cost is relatively high,

Exercise Caution with Neodymium Magnets

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.

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.

Under no circumstances should neodymium magnets be brought close to GPS and smartphones.

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.

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

Magnetic 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. In addition, they can damage televisions, VCRs, computer monitors, and CRT displays. You should especially avoid placing neodymium magnets near electronic devices.

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

If joining of neodymium magnets is not under control, then they may crumble and crack. You can't move them to each other. At a distance less than 10 cm you should hold them very strongly.

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.

If you have a nickel allergy, avoid contact with neodymium magnets.

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.

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

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.

 Keep neodymium magnets away from youngest children.

Neodymium magnets are not toys. Do not allow children to play with them. In the case of swallowing multiple magnets simultaneously, they can attract to each other through the intestinal walls. In the worst case scenario, this can lead to death.

Neodymium magnets are particularly delicate, resulting in damage.

Neodymium magnetic are highly fragile, and by joining them in an uncontrolled manner, they will break. Neodymium magnets are made of metal and coated with a shiny nickel, but they are not as durable as steel. At the moment of connection between the magnets, sharp metal fragments can be dispersed in different directions.

Caution!

Please see the article - What danger lies in neodymium magnets? You will learn how to handle them properly.

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