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neodymium magnets

We provide red color magnets Nd2Fe14B - our proposal. Practically all "neodymium magnets" on our website are available for immediate purchase (check the list). Check out the magnet price list for more details check the magnet price list

Magnet for water searching F200 GOLD

Where to purchase very strong neodymium magnet? Holders with magnets in solid and airtight steel enclosure are excellent for use in difficult weather conditions, including snow and rain more...

magnets with holders

Holders with magnets can be used to enhance manufacturing, exploring underwater areas, or locating space rocks from gold see...

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UMP 29x10 [M5] GW - search holder

search holder

Catalog no 210230

GTIN: 5906301813903

0

Diameter Ø [±0,1 mm]

29 mm

Height [±0,1 mm]

10 mm

Weight

0.1 g

Load capacity

32 kg / 313.81 N

Coating

[NiCuNi] nickel

10.50 with VAT / pcs + price for transport

8.54 ZŁ net + 23% VAT / pcs

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UMP 29x10 [M5] GW - search holder

Specification/characteristics UMP 29x10 [M5] GW - search holder
properties
values
Cat. no.
210230
GTIN
5906301813903
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
29 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
0.1 g [±0,1 mm]
Load capacity ~ ?
32 kg / 313.81 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 29x10 [M5] GW, which is very powerful and has an impressive magnetic pulling force of approximately ~32 kg. This model is perfect for retrieving metal objects at the bottom of water bodies.
Neodymium magnets are efficient for retrieving in water environments due to their powerful strength. UMP 29x10 [M5] GW weighing 0.1 grams with a pulling force of ~32 kg is a perfect solution for finding metallic findings.
When choosing a magnetic holder for underwater searches, you should pay attention to the number of Gauss or Tesla value, which determines the lifting force. UMP 29x10 [M5] GW has a pulling force of approximately ~32 kg, making it a powerful tool for retrieving heavier items. 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 adhesive force because it depends on the fraction of the magnetic field that interacts with the metal surface. In the case of UMP 29x10 [M5] GW with a lifting capacity of ~32 kg, maximum power are achieved with the upper holder, while the side holder 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 lifting capacity can be five 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 and disadvantages of neodymium magnets NdFeB.

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

  • Their power is maintained, and after approximately 10 years, it drops only by ~1% (theoretically),
  • They are very resistant to demagnetization caused by external magnetic sources,
  • Thanks to the glossy finish and nickel coating, they have an elegant appearance,
  • Magnetic induction on the surface of these magnets is very strong,
  • With the right combination of materials, they reach excellent thermal stability, enabling operation at or above 230°C (depending on the structure),
  • The ability for custom shaping or adjustment to specific needs – neodymium magnets can be manufactured in multiple variants of geometries, which extends the scope of their use cases,
  • Important function in cutting-edge sectors – they are utilized in hard drives, electromechanical systems, healthcare devices and sophisticated instruments,
  • Relatively small size with high magnetic force – neodymium magnets offer impressive pulling strength in small dimensions, which makes them ideal in small systems

Disadvantages of NdFeB magnets:

  • They are fragile when subjected to a heavy impact. If the magnets are exposed to mechanical hits, we recommend in a protective case. The steel housing, in the form of a holder, protects the magnet from cracks while also enhances its overall resistance,
  • Magnets lose magnetic efficiency when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible performance loss (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 recommended to use sealed magnets made of plastic for outdoor use,
  • The use of a protective casing or external holder is recommended, since machining fine details in neodymium magnets is restricted,
  • Health risk linked to microscopic shards may arise, if ingested accidentally, which is notable in the health of young users. Moreover, small elements from these products can disrupt scanning if inside the body,
  • High unit cost – neodymium magnets are costlier than other types of magnets (e.g., ferrite), which increases the cost of large-scale applications

Handle Neodymium Magnets with Caution

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

Please review the information on how to handle neodymium magnets and avoid significant harm to your body, as well as prevent unintentional disruption to the magnets.

Neodymium magnets are particularly delicate, resulting in damage.

Neodymium magnets are fragile as well as will crack if allowed to collide with each other, even from a distance of a few centimeters. Despite being made of metal and coated with a shiny nickel plating, they are not as hard as steel. 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.

You should keep neodymium magnets at a safe distance from the wallet, computer, and TV.

Strong magnetic fields emitted by neodymium magnets can damage magnetic storage media such as floppy disks, credit cards, magnetic ID cards, cassette tapes, video tapes, or other devices. They can also damage televisions, VCRs, computer monitors, and CRT displays. Avoid placing neodymium magnets in close proximity to electronic devices.

Dust and powder from neodymium magnets are highly flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. Once crushed into fine powder or dust, this material becomes highly flammable.

The magnet coating contains nickel, so be cautious if you have a nickel allergy.

Studies show a small percentage of people have allergies to certain metals, including 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.

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 jump and also touch together within a distance of several to almost 10 cm from each other.

 Keep neodymium magnets away from children.

Neodymium magnets are not toys. Be cautious and make sure no child plays 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 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.

People with pacemakers are advised to avoid neodymium magnets.

Neodymium magnets generate strong magnetic fields. As a result, they 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.

Never bring neodymium magnets close to a phone and GPS.

Neodymium magnets are a source of intense magnetic fields that cause interference with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

Safety rules!

So that know how strong neodymium magnets are and why they are so dangerous, see the article - Dangerous strong neodymium magnets.

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