UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

Product available Ships tomorrow

UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

search holder

Catalog no 210421

GTIN/EAN: 5906301814061

5.00

Diameter Ø

75 mm [±1 mm]

Height

25 mm [±1 mm]

Weight

900 g

Load capacity

310.00 kg / 3040.06 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 8 000 Gauss [±5%]

view technical specifications »

150.00 ZŁ with VAT / pcs + price for transport

121.95 ZŁ net + 23% VAT / pcs

bulk discounts:

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114.63 ZŁ

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107.32 ZŁ

132.00 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to talk magnets?

Call us now +48 888 99 98 98 or contact us via request form the contact page.
Specifications as well as form of magnetic components can be tested with our force calculator.

Order by 14:00 and we’ll ship today!

💡 Guide: How to choose a decent magnet and not get ripped off?

Instead of believing fairy tales on YouTube with tests on uncertified equipment, see what really determines your magnet's power:

📏 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!

Product card - UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

Specification / characteristics - UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

properties

properties	values
Cat. no.	210421
GTIN/EAN	5906301814061
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 ~ ?	310.00 kg / 3040.06 N
Coating	[NiCuNi] Nickel
Series	GOLD
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 N42

Specification / characteristics UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

properties	values	units
remenance Br [min. - max.] ?	12.9-13.2	kGs
remenance Br [min. - max.] ?	1290-1320	mT
coercivity bHc ?	10.8-12.0	kOe
coercivity bHc ?	860-955	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	40-42	BH max MGOe
energy density [min. - max.] ?	318-334	BH max KJ/m
max. temperature ?	≤ 80	°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

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%

Sustainability

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: 210421-2026

Quick Unit Converter

Force (pull)

Force in lbs

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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 GOLD / N42 offers an optimal weight-to-pull force ratio, which is important for repeated throwing. For beginners, we recommend lighter single-sided models (F80-F200), for advanced users - heavier double-sided (Two-Side) ones.

Double-sided holders (Two-Side) have two active magnetic surfaces and two mounting holes. Side mounting is ideal for throwing from the shore, as the magnet drags flat along the bottom. The double-sided version increases search efficiency by 100%.

The magnet is glued into a solid steel cup and sealed with epoxy resin, protecting it from water. 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.

Check the product title and description to see if you are buying just the magnet or the XL set. In the package, you will find everything needed: strong rope (e.g., 20m), gloves, and hardware. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.

The capacity given in the name (e.g., 310.00 kg) is the maximum value measured in laboratory conditions. Dirt, rust, paint, and algae create a distance that weakens the magnet by even 70-80%. 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. It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.

It is the best value because for the same money, you obtain a premium mount that will last for much longer than budget alternatives.

The unique way of mounting the magnet in the protective cup builds a unified structure that dampens shocks while working on rough surfaces.

Many sellers use a trick by promoting the pull force tested only on the vertical mount. GOLD mounts focuses on full transparency by stating the actual capabilities of the gear, so you avoid disappointment during real field work.

{By choosing Dhit, you bet on a local market leader that perfectly understands the specifics of local rivers and lakes. Every product is checked before delivery, which guarantees that you receive equipment of the defect-free.

Pros as well as cons of rare earth magnets.

Advantages

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
They retain their magnetic properties even under external field action,
In other words, due to the aesthetic surface of gold, the element gains visual value,
They feature high magnetic induction at the operating surface, making them more effective,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Possibility of custom shaping and optimizing to complex requirements,
Universal use in advanced technology sectors – they are commonly used in hard drives, drive modules, advanced medical instruments, as well as technologically advanced constructions.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Limitations

Disadvantages of neodymium magnets:

They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
Limited possibility of making nuts in the magnet and complicated shapes - preferred is cover - magnet mounting.
Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. Furthermore, tiny parts of these devices can disrupt the diagnostic process medical in case of swallowing.
With large orders the cost of neodymium magnets is economically unviable,

Holding force characteristics

Highest magnetic holding force – what it depends on?

The declared magnet strength represents the peak performance, measured under optimal environment, namely:

with the application of a yoke made of low-carbon steel, ensuring maximum field concentration
whose thickness reaches at least 10 mm
with a surface cleaned and smooth
under conditions of gap-free contact (surface-to-surface)
under vertical force vector (90-degree angle)
at temperature room level

Impact of factors on magnetic holding capacity in practice

Please note that the application force will differ influenced by elements below, in order of importance:

Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures reduce magnetic permeability and holding force.
Surface finish – full contact is possible only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate lowers the lifting capacity.

Warnings

Combustion hazard

Fire warning: Neodymium dust is highly flammable. Do not process magnets without safety gear as this risks ignition.

Powerful field

Handle magnets with awareness. Their immense force can surprise even experienced users. Stay alert and respect their power.

Hand protection

Watch your fingers. Two powerful magnets will snap together immediately with a force of massive weight, destroying anything in their path. Be careful!

Warning for heart patients

People with a heart stimulator have to maintain an large gap from magnets. The magnetism can stop the operation of the implant.

Skin irritation risks

It is widely known that nickel (the usual finish) is a potent allergen. For allergy sufferers, avoid touching magnets with bare hands or opt for coated magnets.

Data carriers

Do not bring magnets close to a purse, computer, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Magnets are brittle

Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.

Thermal limits

Regular neodymium magnets (N-type) lose magnetization when the temperature exceeds 80°C. The loss of strength is permanent.

Product not for children

Adult use only. Tiny parts can be swallowed, causing intestinal necrosis. Store out of reach of kids and pets.

Threat to navigation

Remember: neodymium magnets produce a field that confuses precision electronics. Keep a separation from your mobile, device, and navigation systems.

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

UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

Product card - UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Sustainability

Force (pull)

Magnetic Field

Other proposals

SM 18x150 [2xM5] / N42 - magnetic separator

MPL 25x12.5x5 / N38 - lamellar magnet

UMC 36x6/4X8 / N38 - cylindrical magnetic holder

MPL 50x50x10 / N38 - lamellar magnet

Pros as well as cons of rare earth magnets.

Advantages

Limitations

Holding force characteristics

Highest magnetic holding force – what it depends on?

Impact of factors on magnetic holding capacity in practice

Warnings

Combustion hazard

Powerful field

Hand protection

Warning for heart patients

Skin irritation risks

Data carriers

Magnets are brittle

Thermal limits

Product not for children

Threat to navigation

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C