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neodymium magnets

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Magnets for water searching F200 GOLD

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magnetic holders

Holders with magnets can be applied to facilitate production processes, underwater exploration, or locating meteorites made of metal read...

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UMP 75x25 [M10x3] GW F200 PLATINIUM Lina / N52 - search holder

search holder

Catalog no 210434

GTIN: 5906301814092

5

Diameter Ø [±0,1 mm]

75 mm

Height [±0,1 mm]

25 mm

Weight

900 g

Load capacity

365 kg / 3579.43 N

Coating

[NiCuNi] nickel

300.00 with VAT / pcs + price for transport

243.90 ZŁ net + 23% VAT / pcs

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UMP 75x25 [M10x3] GW F200 PLATINIUM Lina / N52 - search holder

Specification/characteristics UMP 75x25 [M10x3] GW F200 PLATINIUM Lina / N52 - search holder
properties
values
Cat. no.
210434
GTIN
5906301814092
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
75 mm [±0,1 mm]
Height
25 mm [±0,1 mm]
Weight
900 g [±0,1 mm]
Load capacity ~ ?
365 kg / 3579.43 N
Coating
[NiCuNi] nickel
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material N52

properties
values
units
coercivity bHc ?
860-995
kA/m
coercivity bHc ?
10.8-12.5
kOe
energy density [Min. - Max.] ?
380-422
BH max KJ/m
energy density [Min. - Max.] ?
48-53
BH max MGOe
remenance Br [Min. - Max.] ?
14.2-14.7
kGs
remenance Br [Min. - Max.] ?
1420-1470
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 75x25 [M10x3] GW F200 PLATINIUM Lina / N52, which is very powerful and has an impressive magnetic pulling force of approximately ~365 kg. This model is perfect for locating metal objects at the bottom of water bodies.
Neodymium magnets are efficient for retrieving in water environments due to their powerful strength. UMP 75x25 [M10x3] GW F200 PLATINIUM Lina / N52 weighing 900 grams with a pulling force of ~365 kg is a great choice for finding metallic findings.
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 75x25 [M10x3] GW F200 PLATINIUM Lina / N52 has a pulling force of approximately ~365 kg, making it a powerful tool for retrieving heavier items. 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 perpendicular force because it depends on the fraction of the magnetic field that interacts with the metal surface. In the case of UMP 75x25 [M10x3] GW F200 PLATINIUM Lina / N52 with a lifting capacity of ~365 kg, full capabilities are achieved with the top attachment, while the side attachment 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 perpendicular manner. In a situation where the force acts parallelly, 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 long-term stability, neodymium magnets provide the following advantages:

  • They have unchanged lifting capacity, and over more than 10 years their attraction force decreases symbolically – ~1% (in testing),
  • They protect against demagnetization induced by ambient magnetic influence very well,
  • In other words, due to the metallic nickel coating, the magnet obtains an aesthetic appearance,
  • They have exceptional magnetic induction on the surface of the magnet,
  • With the right combination of magnetic alloys, they reach excellent thermal stability, enabling operation at or above 230°C (depending on the form),
  • Thanks to the flexibility in shaping and the capability to adapt to unique requirements, neodymium magnets can be created in different geometries, which expands their functional possibilities,
  • Important function in advanced technical fields – they find application in hard drives, electric motors, clinical machines as well as sophisticated instruments,
  • Compactness – despite their small size, they deliver powerful magnetism, making them ideal for precision applications

Disadvantages of magnetic elements:

  • They can break when subjected to a strong 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 cracks and increases its overall strength,
  • High temperatures may significantly reduce the holding force of neodymium magnets. Typically, above 80°C, they experience permanent weakening 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 wet environment – during outdoor use, we recommend using waterproof magnets, such as those made of non-metallic materials,
  • Limited ability to create internal holes in the magnet – the use of a mechanical support is recommended,
  • Possible threat linked to microscopic shards may arise, when consumed by mistake, which is notable in the context of child safety. Furthermore, minuscule fragments from these products have the potential to disrupt scanning if inside the body,
  • In cases of tight budgets, neodymium magnet cost is a challenge,

Safety Precautions

The magnet coating contains nickel, so be cautious 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 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.

Magnets will bounce and also clash together within a radius of several to around 10 cm from each other.

Neodymium magnetic are incredibly fragile, they easily fall apart and can become damaged.

Neodymium magnetic are delicate and will break if allowed to collide with each other, even from a distance of a few centimeters. 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.

  Magnets should not be treated as toys. Therefore, it is not recommended for youngest children to have access to them.

Remember that neodymium magnets are not toys. Do not allow children to play 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.

Neodymium magnets should not be near people with pacemakers.

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.

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.

Comparing neodymium magnets to ferrite magnets (found in speakers), they are 10 times stronger, 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.

Do not bring neodymium magnets close to GPS and smartphones.

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.

Neodymium magnets can become demagnetized at high temperatures.

Although magnets are generally resilient, 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.

Do not place neodymium magnets 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 devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Pay attention!

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

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tel: +48 888 99 98 98