tel: +48 888 99 98 98

neodymium magnets

We provide red color magnetic Nd2Fe14B - our offer. All magnesy in our store are available for immediate delivery (check the list). See the magnet price list for more details check the magnet price list

Magnet for treasure hunters F200 GOLD

Where to purchase powerful magnet? Holders with magnets in airtight and durable enclosure are ideally suited for use in difficult weather, including snow and rain more information...

magnetic holders

Magnetic holders can be applied to facilitate manufacturing, exploring underwater areas, or searching for space rocks from gold more...

Shipping always shipped if the order is placed before 2:00 PM on working days.

Dhit sp. z o.o. logo
Product available shipping tomorrow!

UMP 97x40 [M8+M10] GW F300 Lina / N38 - search holder

search holder

catalog number 210383


diameter Ø

97 mm [±0,1 mm]


40 mm [±0,1 mm]

capacity ~

380.00 kg / 3726.53 N

max. temperature

≤ 80 °C

370.00 PLN gross price (including VAT) / pcs +

300.81 PLN net price + 23% VAT / pcs

bulk discounts:

need more quantity?

price from 1 pcs
300.81 PLN
370.00 PLN
price from 4 pcs
282.76 PLN
347.79 PLN
price from 8 pcs
264.71 PLN
325.59 PLN

Want a better price?

Call us tel: +48 22 499 98 98 or write through form on the contact page. You can check the mass as well as the appearance of neodymium magnets in our force calculator magnetic mass calculator

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

Specification: search holder 97x40 [M8+M10] GW F300 Lina / N38

Characteristics: search holder 97x40 [M8+M10] GW F300 Lina / N38
catalog number
production / distribution
Dhit sp. z o.o.
country of origin
Poland / China / Germany
customs code
diameter Ø
97 mm [±0,1 mm]
40 mm [±0,1 mm]
capacity ~ ?
380.00 kg / 3726.53 N
max. temperature ?
≤ 80 °C
coating type ?
[NiCuNi] nickel
2200.00 g
execution tolerance
± 0.1 mm
typ uchwytu
rozmiar ucha
3x ucho M10 / 1x szekla M10
ilość magnesów
2 szt.
rodzaj materiału
stal rdzewna
strumień magnetyczny
~ 10000 Gs
długość liny
~ 25 metrów / fi 8mm
udźwig liny
~ 1600 kg

Magnetic properties of the material N38

material characteristics N38
remenance Br [Min. - Max.] ?
remenance Br [Min. - Max.] ?
coercivity bHc ?
coercivity bHc ?
actual internal force iHc
≥ 12
actual internal force iHc
≥ 955
energy density [Min. - Max.]
BH max MGOe
energy density [Min. - Max.]
BH max KJ/m
max. temperature
≤ 80

Physical properties of sintered neodymium magnets Nd2Fe14B

Physical properties of sintered neodymium magnets Nd2Fe14B
Vickers hardness
Curie Temperature TC
312 - 380
Curie Temperature TF
593 - 716
Specific resistance
Bending strength
Compressive strength
Thermal expansion parallel (∥) to orientation (M)
(3-4) x 106
Thermal expansion perpendicular (⊥) to orientation (M)
-(1-3) x 10-6
Young's modulus
1.7 x 104
For underwater searches, we recommend UMP 97x40 [M8+M10] GW F300 Lina / N38, which is exceptionally strong and has an impressive magnetic pulling force of approximately ~380.00 kg. This model is perfect for retrieving metal objects at the bottom of water bodies.
Magnetic holders are ideal for searching in water due to their powerful strength. UMP 97x40 [M8+M10] GW F300 Lina / N38 weighing 2200.00 grams with a pulling force of ~380.00 kg is a perfect solution 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 attraction strength. UMP 97x40 [M8+M10] GW F300 Lina / N38 has a pulling force of approximately ~380.00 kg, making it a effective solution 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 sliding force of a magnetic holder 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 97x40 [M8+M10] GW F300 Lina / N38 with a pulling force of ~380.00 kg, full capabilities are achieved with the top attachment, while the side holder offers only 10%-25% 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 pulling force in a vertical manner. In a situation where the force acts parallelly, the magnet's attraction force can be 5x 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

Product suggestions

Advantages as well as disadvantages of neodymium magnets NdFeB.

Apart from immense power, neodymium magnets have the following advantages:

  • They do not lose power over time - after approximately 10 years, their strength decreases by only ~1% (theoretically),
  • They protect against demagnetization caused by external magnetic sources extremely well,
  • In other words, thanks to the glossy nickel, gold, or silver finish, the element gains an visually attractive appearance,
  • They have very high magnetic induction on the surface of the magnet,
  • Magnetic neodymium magnets are characterized by hugely high magnetic induction on the surface of the magnet and can operate (depending on the shape) even at temperatures of 230°C or higher...
  • 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 modern technologies – find application in HDD drives, electric motors, medical apparatus and other highly developed apparatuses.

Disadvantages of neodymium magnets:

  • They are fragile when subjected to a strong impact. If the magnets are exposed to impacts, we recommend using magnets in a steel housing. The steel housing in the form of a holder protects the magnet from impacts and at the same time increases its overall strength,
  • Magnets lose their strength due to exposure to high temperatures. In most cases, when the temperature exceeds 80°C, these magnets experience permanent reduction in strength (although it is worth noting that this is dependent on the shape and size of the magnet). To avoid this problem, we offer special magnets marked with the [AH] symbol, which exhibit high temperature resistance. They can operate even at temperatures as high as 230°C or more,
  • Due to their susceptibility to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic, or other moisture-resistant materials when using them outdoors,
  • The use of a cover - a magnetic holder is recommended due to the limited production capabilities of creating threads or complex shapes in the magnet
  • Health risk arising from small pieces of magnets are risky, when accidentally ingested, which is particularly important in the context of child safety. Furthermore, small elements of these devices are able to be problematic in medical diagnosis when they are in the body.

Handle with Care: Neodymium Magnets

Neodymium magnets are over 10 times more powerful than ferrite magnets (the ones in speakers), and their strength can surprise you.

Read the information on our website on how to properly utilize neodymium magnets and avoid significant harm to your body and unintentional disruption to the magnets.

Neodymium magnetic are extremely fragile, resulting in their cracking.

In the event of a collision between two neodymium magnets, it can result in them getting chipped. 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.

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.

Keep neodymium magnets as far away as possible from GPS and smartphones.

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

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 is because many of these devices are equipped with a function that deactivates the device in a magnetic field.

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

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

  Do not give neodymium magnets to children.

Neodymium magnets are not toys. Be cautious and make sure no child plays with them. They can be a significant choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing significant injuries, and even death.

The magnet coating is made of nickel, so be cautious 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.

Neodymium magnets can demagnetize at high temperatures.

Although magnets have demonstrated their effectiveness up to 80°C or 175°F, the temperature can vary depending on the type, shape, and intended use of the specific magnet.

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

Magnets will crack or crumble with careless joining to each other. You can't approach them to each other. At a distance less than 10 cm you should have them very strongly.

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

Dhit sp. z o.o. logo


tel: +48 888 99 98 98