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

search holder

Catalog no 210382

GTIN/EAN: 5906301814016

5.00

Diameter Ø

75 mm [±1 mm]

Height

24 mm [±1 mm]

Weight

0.9 g

Load capacity

280.00 kg / 2745.86 N

Coating

[NiCuNi] Nickel

product specifications »

230.00 ZŁ with VAT / pcs + price for transport

186.99 ZŁ net + 23% VAT / pcs

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Contact us by phone +48 888 99 98 98 if you prefer contact us via our online form our website.
Lifting power and shape of magnetic components can be calculated with our force calculator.

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💡 Check why professionals choose Dhit over cheap substitutes

Don't be fooled by amateur online tests – go for certified quality and specific parameters that guarantee success:

  • 📏 Magnet thickness in the casing (min. 10mm) – This is what matters most! Thin magnets are weak. Thanks to the 1cm thickness of N52 neodymium, your magnet "sees" metal even through thick rust and mud.
  • 🛡️ Armored protection (Black Epoxy) – Forget about rust. This coating doesn't chip when hitting rocks and protects the magnet in water much better than regular nickel, which fails quickly.
  • 🧲 Eyelets that don't steal power – Made of special non-magnetic steel, so they don't stick to the magnet and don't block the force. Important: mount only one eyelet at a time! Using 3 at once is a mistake that weakens the magnet.
  • 🧶 Certified rope (min. 8mm) – You gain the certainty that your gear won't stay at the bottom. It's thick and comfortable, so it doesn't cut your fingers when pulling out heavy scrap metal.
  • 🚀 Our advantage: We are the only ones combining the strongest N52 neodymium (10mm thick) with non-magnetic eyelets. This is real power and durability you won't find anywhere else.

Invest in solid equipment and enjoy the results!

Technical parameters of the product - UMP 75x24 [M8+M10] GW F200 Lina / N38 - search holder

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

properties
properties values
Cat. no. 210382
GTIN/EAN 5906301814016
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 75 mm [±1 mm]
Height 24 mm [±1 mm]
Weight 0.9 g
Load capacity ~ ? 280.00 kg / 2745.86 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMP 75x24 [M8+M10] GW F200 Lina / N38 - search holder
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
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 at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
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 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²
Engineering data and GPSR
Material specification
iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%
Ecology and recycling (GPSR)
recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 210382-2026
Magnet Unit Converter
Force (pull)
Field Strength
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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. Model UMP 75x24 [M8+M10] GW F200 Lina / N38 offers an optimal weight-to-pull force ratio, which is important for repeated throwing. The choice depends on whether you plan to throw from the shore (double-sided) or from a bridge (single-sided).
The double-sided model attracts from above and below, increasing the chance of hooking a find. The side eyelet ensures the magnet doesn't stand sideways or "on edge" during pulling. The double-sided version increases search efficiency by 100%.
This construction protects the brittle neodymium from direct impact against stones and the bottom. Avoid throwing the magnet against bridge pillars or hard obstacles. After each fishing trip, we recommend rinsing the magnet with fresh water and drying it.
Most of our starter kits are complete and ready to use. A full set usually contains: magnet, polypropylene rope with appropriate strength, protective gloves, hook, and carabiner. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.
The capacity given in the name (e.g., 280.00 kg) is the maximum value measured in laboratory conditions. In a river, objects are often rusty, silted, or irregular in shape (e.g., pipes), which drastically reduces grip strength. A large power reserve is essential in real search conditions.
If you find a dangerous object (unexploded ordnance) or an antique, you have a legal obligation to report it to appropriate services (Police, conservator). We recommend familiarizing yourself with current local regulations and heritage protection laws.
It is the smartest investment because for the identical price, you buy a premium mount that will serve you for much longer than budget alternatives.
The GOLD series utilize a robust construction that acts as a real armor for the brittle neodymium.
It is worth remembering that the identical magnet used by the side hook often has as little as 40 kg of power instead of the declared 200 kg. GOLD mounts guarantees honest data by providing the real parameters of the magnet, so you can be sure during real field work.
{By choosing GOLD mounts, you support Polish engineering that knows the conditions of our waters. Don't risk it with unknown goods, it is better to choose proven gear that cares about the happiness of every user.

Strengths and weaknesses of rare earth magnets.

Pros

Apart from their notable magnetism, neodymium magnets have these key benefits:
  • Their strength is maintained, and after around 10 years it decreases only by ~1% (according to research),
  • Neodymium magnets prove to be extremely resistant to demagnetization caused by external magnetic fields,
  • The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • The surface of neodymium magnets generates a unique magnetic field – this is one of their assets,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • In view of the potential of free forming and adaptation to custom needs, NdFeB magnets can be manufactured in a broad palette of forms and dimensions, which amplifies use scope,
  • Huge importance in modern technologies – they find application in data components, electric drive systems, advanced medical instruments, and complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in compact constructions

Cons

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also increases their durability
  • NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in realizing nuts and complicated shapes in magnets, we recommend using a housing - magnetic mount.
  • Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child health protection. It is also worth noting that small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
  • With budget limitations the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum lifting capacity of the magnet – what it depends on?

The declared magnet strength refers to the maximum value, recorded under optimal environment, meaning:
  • on a block made of mild steel, effectively closing the magnetic field
  • possessing a massiveness of at least 10 mm to avoid saturation
  • with an ground touching surface
  • under conditions of no distance (metal-to-metal)
  • under axial force vector (90-degree angle)
  • in neutral thermal conditions

Practical aspects of lifting capacity – factors

Bear in mind that the application force will differ subject to the following factors, in order of importance:
  • Space between surfaces – every millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Load vector – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
  • Base massiveness – too thin steel does not close the flux, causing part of the flux to be wasted to the other side.
  • Steel grade – the best choice is high-permeability steel. Stainless steels may have worse magnetic properties.
  • Surface condition – smooth surfaces guarantee perfect abutment, which improves field saturation. Rough surfaces weaken the grip.
  • Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate decreases the holding force.

Safe handling of NdFeB magnets
Flammability

Drilling and cutting of NdFeB material carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Magnetic media

Powerful magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Keep a distance of min. 10 cm.

Powerful field

Handle magnets with awareness. Their immense force can shock even professionals. Stay alert and respect their force.

Risk of cracking

Despite the nickel coating, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Heat warning

Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Keep away from children

Absolutely store magnets out of reach of children. Ingestion danger is significant, and the effects of magnets clamping inside the body are fatal.

Skin irritation risks

Certain individuals experience a contact allergy to nickel, which is the typical protective layer for NdFeB magnets. Extended handling can result in a rash. It is best to use protective gloves.

Pinching danger

Danger of trauma: The pulling power is so immense that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.

GPS and phone interference

GPS units and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Danger to pacemakers

For implant holders: Powerful magnets disrupt electronics. Keep at least 30 cm distance or request help to handle the magnets.

Attention! Want to know more? Check our post: Are neodymium magnets dangerous?