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

search holder

Catalog no 210422

GTIN/EAN: 5906301814078

5.00
Load capacity 365.00 kg / 3579.43 N
Diameter Ø
75 mm [±1 mm]
Height
25 mm [±1 mm]
Weight
900 g
Coating
[NiCuNi] Nickel
Magnetic Flux
~ 8 000 Gauss [±5%]

How we measure these parameters — certificates and measurements

view technical specifications »

219.51 zł net / pcs

270.00 zł with VAT (23% VAT) / pcs

price for transport

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Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

Order by 14:00 and we’ll ship today!

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

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

properties
properties values
Cat. no. 210422
GTIN/EAN 5906301814078
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 25 mm [±1 mm]
Weight 900 g
Load capacity ~ ? 365.00 kg / 3579.43 N
Coating [NiCuNi] Nickel
Series PLATINUM
Holder Type 2 sided
Material Type Structural steel S235 (ferrous)
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 3xM10
Manufacturing Tolerance ±1 mm

Magnetic properties of material N52

Specification / characteristics UMP 75x25 [M10x3] GW F200 PLATINIUM / N52 - search holder
properties values units
remenance Br [min. - max.] ? 14.2-14.7 kGs
remenance Br [min. - max.] ? 1420-1470 mT
coercivity bHc ? 10.8-12.5 kOe
coercivity bHc ? 860-995 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 48-53 BH max MGOe
energy density [min. - max.] ? 380-422 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 310 °C
Curie Temperature TF 590 °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
Technical and environmental data

Elemental analysis

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: 210422-2026
Measurement Calculator

Pulling force

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For underwater searches, we recommend specialized holders from the GOLD series, designed for working in difficult conditions. Model UMP 75x25 [M10x3] GW F200 PLATINIUM / N52 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%.
Our holders have a thick steel housing covered with an anti-corrosion layer (chrome, nickel, zinc). The housing significantly increases lifespan but does not make the magnet completely indestructible. Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.
We offer both standalone holders and ready-made gift sets (depending on the selected option in the store). In the package, you will find everything needed: strong rope (e.g., 20m), gloves, and hardware. Using thread glue is crucial to not lose the magnet in silt.
The capacity given in the name (e.g., 365.00 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.
Searches are allowed as long as you do not interfere with archaeological sites or search for weapons. We recommend familiarizing yourself with current local regulations and heritage protection laws.
It is the smartest investment because for the same money, you obtain a premium mount that will serve you for many seasons than budget alternatives.
Dhit GOLD mounts feature a robust construction that provides a true shield for the magnetic core.
You should know that the same magnet pulled by the lateral point often has only 40 kg of power instead of the declared 200 kg. GOLD mounts guarantees full transparency by providing the actual capabilities of the gear, so you can be sure during real field work.
{By choosing GOLD mounts, you support Polish engineering that knows the specifics of local rivers and lakes. Instead of risking with unknown goods, it is better to choose proven gear that cares about the happiness of every user.

Pros and cons of Nd2Fe14B magnets.

Strengths

Apart from their consistent power, neodymium magnets have these key benefits:
  • Their power remains stable, and after around ten years it decreases only by ~1% (according to research),
  • Neodymium magnets prove to be extremely resistant to demagnetization caused by magnetic disturbances,
  • By using a reflective coating of nickel, the element acquires an professional look,
  • Magnets are distinguished by impressive magnetic induction on the outer layer,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures approaching 230°C and above...
  • Thanks to versatility in designing and the ability to modify to client solutions,
  • Universal use in electronics industry – they find application in hard drives, motor assemblies, precision medical tools, also other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which enables their usage in miniature devices

Weaknesses

What to avoid - cons of neodymium magnets and proposals for their use:
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • Limited possibility of creating threads in the magnet and complex shapes - recommended is a housing - magnetic holder.
  • Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, small components of these devices are able to be problematic in diagnostics medical after entering the body.
  • Due to neodymium price, their price exceeds standard values,

Lifting parameters

Magnetic strength at its maximum – what contributes to it?

The force parameter is a theoretical maximum value conducted under standard conditions:
  • on a base made of mild steel, optimally conducting the magnetic field
  • whose thickness is min. 10 mm
  • with a surface free of scratches
  • without the slightest insulating layer between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • in stable room temperature

Key elements affecting lifting force

Please note that the working load will differ subject to the following factors, starting with the most relevant:
  • Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Steel thickness – insufficiently thick sheet causes magnetic saturation, causing part of the power to be escaped to the other side.
  • Material type – the best choice is pure iron steel. Stainless steels may have worse magnetic properties.
  • Base smoothness – the smoother and more polished the surface, the better the adhesion and stronger the hold. Roughness creates an air distance.
  • Heat – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, however under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet and the plate lowers the load capacity.

Safe handling of NdFeB magnets
Skin irritation risks

Medical facts indicate that the nickel plating (standard magnet coating) is a potent allergen. If your skin reacts to metals, avoid touching magnets with bare hands or select encased magnets.

Fragile material

Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.

Fire risk

Dust created during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Crushing force

Risk of injury: The attraction force is so immense that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.

Danger to the youngest

Always keep magnets out of reach of children. Ingestion danger is high, and the effects of magnets clamping inside the body are tragic.

Electronic hazard

Device Safety: Neodymium magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).

Handling guide

Be careful. Rare earth magnets act from a distance and connect with huge force, often faster than you can move away.

Demagnetization risk

Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.

Life threat

Warning for patients: Powerful magnets disrupt electronics. Keep at least 30 cm distance or ask another person to work with the magnets.

Phone sensors

Navigation devices and smartphones are highly susceptible to magnetism. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Danger! Details about risks in the article: Magnet Safety Guide.