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

see technical data »

230.00 ZŁ with VAT / pcs + price for transport

186.99 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to negotiate?

Contact us by phone +48 22 499 98 98 otherwise drop us a message via form through our site.
Specifications and form of neodymium magnets can be calculated using our power calculator.

Same-day shipping for orders placed before 14:00.

💡 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 data 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

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 specification and ecology

Chemical composition

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: 210382-2026

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Force (N)

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It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. This specific magnet ensures a laboratory lifting capacity of up to 280.00 kg, which translates into high effectiveness in water. 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. Top mounting works well when fishing from a bridge, pier, or well (vertical technique). The double-sided version increases search efficiency by 100%.

This construction protects the brittle neodymium from direct impact against stones and the bottom. 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.

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. Using thread glue is crucial to not lose the magnet in silt.

The capacity given in the name (e.g., 280.00 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.

Possessing and using a neodymium magnet to clean the bottom is generally legal, provided you are not searching for artifacts protected by law. Magnet fishing is an eco-friendly hobby if you clean the river from trash and scrap.

Unlike other brands, Dhit uses the highest quality materials, which translates into a better results during treasure hunting.

Most magnets on the market have thin casings that crack during the any strong impact against concrete or rocks.

Many sellers employ a tactic by promoting the power tested only on the top hook. Interestingly, in the web, it is hard to find recordings testing the actual strength of competitor products on the side hook.

{By choosing Dhit, you support Polish engineering that knows the specifics of our waters. Every product is checked before delivery, which ensures that you the set will be of the highest quality.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Pros

Apart from their notable magnetism, neodymium magnets have these key benefits:

They retain full power for nearly 10 years – the drop is just ~1% (based on simulations),
They possess excellent resistance to magnetism drop when exposed to external fields,
The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures approaching 230°C and above...
Thanks to versatility in shaping and the capacity to adapt to unusual requirements,
Wide application in modern industrial fields – they are used in computer drives, drive modules, medical devices, and industrial machines.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Cons

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 increases their durability
When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in producing nuts and complex shapes in magnets, we recommend using cover - magnetic mount.
Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
Due to complex production process, their price is higher than average,

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

Information about lifting capacity was determined for ideal contact conditions, taking into account:

using a plate made of low-carbon steel, functioning as a magnetic yoke
possessing a thickness of at least 10 mm to avoid saturation
with an polished contact surface
under conditions of no distance (metal-to-metal)
for force applied at a right angle (in the magnet axis)
at conditions approx. 20°C

Lifting capacity in practice – influencing factors

Please note that the magnet holding may be lower subject to the following factors, in order of importance:

Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
Steel grade – the best choice is high-permeability steel. Hardened steels may attract less.
Surface finish – full contact is possible only on smooth steel. Any scratches and bumps create air cushions, reducing force.
Thermal conditions – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was assessed by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under parallel forces the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate decreases the holding force.

Precautions when working with neodymium magnets

Warning for allergy sufferers

Medical facts indicate that nickel (the usual finish) is a strong allergen. For allergy sufferers, prevent direct skin contact and opt for coated magnets.

Protect data

Intense magnetic fields can destroy records on credit cards, hard drives, and storage devices. Keep a distance of at least 10 cm.

Safe operation

Before use, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Think ahead.

Power loss in heat

Standard neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. Damage is permanent.

Fire risk

Fire warning: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.

Pinching danger

Mind your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Be careful!

Danger to pacemakers

Life threat: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Beware of splinters

Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Impact of two magnets will cause them breaking into shards.

Keep away from children

Absolutely keep magnets away from children. Choking hazard is high, and the consequences of magnets connecting inside the body are tragic.

Compass and GPS

GPS units and smartphones are highly susceptible to magnetism. Direct contact with a strong magnet can permanently damage the internal compass in your phone.

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

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Sustainability

Pulling force

Field Strength

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Pros as well as cons of Nd2Fe14B magnets.

Pros

Cons

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what it depends on?

Lifting capacity in practice – influencing factors

Precautions when working with neodymium magnets

Warning for allergy sufferers

Protect data

Safe operation

Power loss in heat

Fire risk

Pinching danger

Danger to pacemakers

Beware of splinters

Keep away from children

Compass and GPS

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Pros as well as cons of Nd₂Fe₁₄B magnets.