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UMP 75x25 [M10x3] GW F200 GOLD Lina / 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 210433

GTIN/EAN: 5906301814085

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%]

product specifications »

200.00 ZŁ with VAT / pcs + price for transport

162.60 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Pick up the phone and ask +48 22 499 98 98 alternatively contact us using contact form our website.
Specifications and form of neodymium magnets can be estimated using our force calculator.

Order by 14:00 and we’ll ship today!

💡 Check why professionals choose Dhit over cheap substitutes

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!

Technical of the product - UMP 75x25 [M10x3] GW F200 GOLD Lina / N42 - search holder

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

properties

properties	values
Cat. no.	210433
GTIN/EAN	5906301814085
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%]
Rope Length	25 m
Rope Capacity	~ 1595 kg
Rope Diameter	Ø 8 mm
Gloves	1 pair
Size/Mount Quantity	3xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N42

Specification / characteristics UMP 75x25 [M10x3] GW F200 GOLD Lina / 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: 210433-2025

Quick Unit Converter

Magnet pull force

Newtons (N)

Pounds (lbs)

Field Strength

Induction (T)

Type a value in one of the inputs, to see all other values change in real-time.

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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. This specific magnet ensures a laboratory lifting capacity of up to 310.00 kg, which translates into high effectiveness in water. 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. Top mounting works well when fishing from a bridge, pier, or well (vertical technique). 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). Avoid throwing the magnet against bridge pillars or hard obstacles. 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). We often add thread glue to secure the eyelet against unscrewing in water. Using thread glue is crucial to not lose the magnet in silt.

The capacity given in the name (e.g., 310.00 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.

Possessing and using a neodymium magnet to clean the bottom is generally legal, provided you are not searching for artifacts protected by law. It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.

By selecting Dhit GOLD mounts, you receive a higher quality standard and real N52 grade for the same market price.

The GOLD series feature heavy-duty, thick-walled steel that provides a true shield for the brittle neodymium.

Many distributors employ a tactic by promoting the pull force measured exclusively on the top hook. GOLD mounts guarantees honest data by providing the real parameters of the gear, so you avoid disappointment during real field work.

{By choosing GOLD mounts, you bet on Polish engineering that knows the conditions of local rivers and lakes. Don't risk it with random brands, stick with proven gear that ensures the happiness of searcher.

Pros and cons of neodymium magnets.

Pros

Besides their stability, neodymium magnets are valued for these benefits:

They have unchanged lifting capacity, and over more than 10 years their attraction force decreases symbolically – ~1% (according to theory),
They are extremely resistant to demagnetization induced by external magnetic fields,
By using a shiny coating of gold, the element gains an nice look,
Magnets have very high magnetic induction on the surface,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures reaching 230°C and above...
Thanks to modularity in shaping and the capacity to modify to individual projects,
Fundamental importance in modern technologies – they are used in magnetic memories, motor assemblies, medical equipment, as well as modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of NdFeB magnets:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a special holder, which not only protects them against impacts but also raises their durability
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Limited possibility of creating nuts in the magnet and complex forms - recommended is a housing - mounting mechanism.
Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
With large orders the cost of neodymium magnets is a challenge,

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

The declared magnet strength refers to the maximum value, recorded under ideal test conditions, meaning:

using a base made of mild steel, acting as a ideal flux conductor
with a thickness minimum 10 mm
with an polished touching surface
without the slightest insulating layer between the magnet and steel
under perpendicular force direction (90-degree angle)
at room temperature

Lifting capacity in practice – influencing factors

Holding efficiency impacted by specific conditions, mainly (from most important):

Distance – the presence of any layer (rust, dirt, air) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet holds much less (often approx. 20-30% of maximum force).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
Material type – ideal substrate is pure iron steel. Cast iron may have worse magnetic properties.
Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Thermal environment – temperature increase causes a temporary drop of force. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet’s surface and the plate decreases the holding force.

Safe handling of neodymium magnets

Keep away from children

Strictly keep magnets away from children. Ingestion danger is high, and the effects of magnets clamping inside the body are tragic.

Physical harm

Watch your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!

Metal Allergy

A percentage of the population experience a hypersensitivity to Ni, which is the standard coating for NdFeB magnets. Prolonged contact may cause an allergic reaction. It is best to use protective gloves.

Fire risk

Fire hazard: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.

Operating temperature

Regular neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. Damage is permanent.

Pacemakers

Health Alert: Neodymium magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.

Respect the power

Handle magnets with awareness. Their powerful strength can surprise even experienced users. Be vigilant and respect their force.

Risk of cracking

Protect your eyes. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.

Magnetic media

Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, medical aids, mechanical watches).

Keep away from electronics

Navigation devices and mobile phones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can ruin the internal compass in your phone.

Caution! Looking for details? Read our article: Are neodymium magnets dangerous?

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

Technical of the product - UMP 75x25 [M10x3] GW F200 GOLD Lina / N42 - search holder

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Sustainability

Magnet pull force

Field Strength

See also products

SM 25x350 [2xM8] / N42 - magnetic separator

UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread

SMZR 32x150 / N52 - magnetic separator with handle

ZM XMAG2 105 elementów - magnetic toy

Pros and cons of neodymium magnets.

Pros

Disadvantages

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

Lifting capacity in practice – influencing factors

Safe handling of neodymium magnets

Keep away from children

Physical harm

Metal Allergy

Fire risk

Operating temperature

Pacemakers

Respect the power

Risk of cracking

Magnetic media

Keep away from electronics

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C