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neodymium magnets

We provide blue color magnets Nd2Fe14B - our store's offer. Practically all magnesy on our website are in stock for immediate delivery (see the list). See the magnet pricing for more details see the magnet price list

Magnets for water searching F200 GOLD

Where to purchase powerful neodymium magnet? Holders with magnets in airtight, solid steel enclosure are excellent for use in variable and difficult weather conditions, including in the rain and snow see...

magnets with holders

Holders with magnets can be used to facilitate production, exploring underwater areas, or locating meteorites made of ore see more...

We promise to ship ordered magnets if the order is placed by 2:00 PM on weekdays.

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UMP 50x20 [M8] GW / N38 - search holder

search holder

catalog number 210231

GTIN: 5906301813910

5.0

diameter Ø

50 mm [±0,1 mm]

height

20 mm [±0,1 mm]

magnetizing direction

↑ axial

capacity ~

130.00 kg / 1274.86 N

max. temperature

≤ 80 °C

77.00 PLN gross price (including VAT) / pcs +

62.60 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?
price from 1 pcs
62.60 PLN
77.00 PLN
price from 16 pcs
58.84 PLN
72.37 PLN
price from 36 pcs
55.09 PLN
67.76 PLN

Want to talk about magnets?

Call us tel: +48 888 99 98 98 or write through contact form on the contact page. You can check the power and the appearance of neodymium magnets in our power calculator magnetic mass calculator

Orders placed by 2:00 PM will be shipped on the same business day.

Specification: search holder 50x20 [M8] GW / N38 ↑ axial

Characteristics: search holder 50x20 [M8] GW / N38 ↑ axial
Properties
Values
catalog number
210231
GTIN
5906301813910
production / distribution
Dhit sp. z o.o.
country of origin
Poland / China / Germany
customs code
85059029
diameter Ø
50 mm [±0,1 mm]
height
20 mm [±0,1 mm]
magnetizing direction ?
↑ axial
capacity ~ ?
130.00 kg / 1274.86 N
max. temperature ?
≤ 80 °C
coating type ?
[NiCuNi] nickel
weight
0.60 g
execution tolerance
± 0.1 mm

Magnetic properties of the material N38

material characteristics N38
Properties
Values
units
remenance Br [Min. - Max.] ?
12.2-12.6
kGs
remenance Br [Min. - Max.] ?
1220-1260
T
coercivity bHc ?
10.8-11.5
kOe
coercivity bHc ?
860-915
kA/m
actual internal force iHc
≥ 12
kOe
actual internal force iHc
≥ 955
kA/m
energy density [Min. - Max.]
36-38
BH max MGOe
energy density [Min. - Max.]
287-303
BH max KJ/m
max. temperature
≤ 80
°C

Physical properties of sintered neodymium magnets Nd2Fe14B

Physical properties of sintered neodymium magnets Nd2Fe14B
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
For exploring rivers and lakes, we recommend UMP 50x20 [M8] GW / N38, which is exceptionally strong and has an impressive magnetic pulling force of approximately ~${capacity} kg. This model is ideal for retrieving metal objects at the bottom of water bodies.
Neodymium magnets are efficient for searching in water due to their strong attraction capability. UMP 50x20 [M8] GW / N38 weighing ${weight} grams with a pulling force of ~${capacity} kg is a great choice for finding lost treasures.
When choosing a magnet for underwater searches, you should pay attention to the number of Gauss or Tesla value, which determines the attraction strength. UMP 50x20 [M8] GW / N38 has a pulling force of approximately ~${capacity} kg, making it a effective solution for recovering heavier items. Remember that the maximum strength is achieved with the upper holder, while the side attachment offers only 10%-25% of that power.
The sliding force of a magnet is typically lower than the perpendicular force because it depends on the fraction of the magnetic field that interacts with the metal surface. In the case of UMP 50x20 [M8] GW / N38 with a lifting capacity of ~${capacity} kg, full capabilities 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 lifting force in a vertical 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

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Advantages as well as disadvantages of neodymium magnets NdFeB.

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

  • They do not lose strength over time - after approximately 10 years, their power decreases by only ~1% (theoretically),
  • They are highly resistant to demagnetization by external magnetic sources,
  • In other words, thanks to the shiny coating of nickel, gold, or silver, the element acquires an aesthetic appearance,
  • They have very high magnetic induction on the surface of the magnet,
  • Thanks to their high temperature resistance, they can operate (depending on the form) even at temperatures up to 230°C and above...
  • Due to the option of accurate forming or adaptation to individual needs – neodymium magnets can be produced in a wide range of shapes and sizes, which enhances their versatility in applications.
  • Significant importance in advanced technologically fields – are utilized in hard drives, electric motors, medical equipment or various technologically advanced devices.

Disadvantages of neodymium magnets:

  • They are fragile when subjected to a powerful impact. If the magnets are exposed to impacts, we recommend using magnets in a metal holder. The steel housing in the form of a holder protects the magnet from impacts, and at the same time increases its overall strength,
  • High temperatures can reduce the power of neodymium magnets. Typically, after heating above 80°C, most of them experience a permanent loss in strength (although it is dependent on the shape and size). To prevent this, we offer special magnets marked with the symbol [AH], which are highly resistant to high temperatures. They can operate even at temperatures up to 230°C, making them an ideal solution for applications requiring high-temperature operation,
  • Magnets exposed to a humid environment can corrode. Therefore, when using them outdoors, we suggest using waterproof magnets made of rubber, plastic, or other moisture-resistant materials,
  • The use of a cover or a magnetic holder is recommended due to the limited possibilities of manufacturing threads or complex shapes in the magnet
  • Possible danger arising from small pieces of magnets pose a threat, if swallowed, which becomes significant in the context of child safety. Additionally, small elements of these products are able to hinder the diagnostic process when they are in the body.

Exercise Caution with Neodymium Magnets

Dust and powder from neodymium magnets are flammable.

Avoid drilling or mechanical processing of neodymium magnets. If the magnet is crushed into fine powder or dust, it becomes highly flammable.

Neodymium magnets are over 10 times stronger than ferrite magnets (the ones in speakers), and their power can shock 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.

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

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.

Neodymium Magnets can attract to each other, pinch the skin, and cause significant swellings.

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

Keep neodymium magnets away from people with pacemakers.

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.

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.

  Neodymium magnets should not be around youngest 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.

Make sure not to bring neodymium magnets close to the TV, wallet, and computer HDD.

Neodymium magnets generate intense magnetic fields that can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also destroy devices like video players, televisions, CRT computer monitors. Remember not to place neodymium magnets close to these electronic devices.

Neodymium magnets can become demagnetized at high temperatures.

Despite the fact that magnets have been found to maintain their efficacy up to temperatures of 80°C or 175°F, it's essential to consider that this threshold may fluctuate depending on the magnet's type, configuration, and intended usage.

Neodymium magnetic are characterized by being fragile, which can cause them to shatter.

Magnets made of neodymium are fragile as well as will shatter if allowed to collide with each other, even from a distance of a few centimeters. Despite being made of metal as well as 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.

So you are aware of why neodymium magnets are so dangerous, see the article titled How very dangerous are strong neodymium magnets?.

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tel: +48 888 99 98 98