Product available Ships in 2 days

UMP 94x40 [3xM10] GW F550 Silver Black Lina / N52 - 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 210491

GTIN/EAN: 5906301814153

5.00

Diameter Ø

94 mm [±1 mm]

Height

40 mm [±1 mm]

Weight

2262 g

Magnetization Direction

↑ axial

Load capacity

650.00 kg / 6374.32 N

Coating

[Epoxy] Epoxy

Magnetic Flux

~ 11 000 Gauss [±5%]

see properties »

400.00 ZŁ with VAT / pcs + price for transport

325.20 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Not sure about your choice?

Give us a call +48 22 499 98 98 if you prefer drop us a message by means of request form our website.
Lifting power as well as shape of magnets can be estimated using our magnetic calculator.

Orders placed before 14:00 will be shipped the same business day.

💡 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 parameters of the product - UMP 94x40 [3xM10] GW F550 Silver Black Lina / N52 - search holder

Specification / characteristics - UMP 94x40 [3xM10] GW F550 Silver Black Lina / N52 - search holder

properties

properties	values
Cat. no.	210491
GTIN/EAN	5906301814153
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	94 mm [±1 mm]
Height	40 mm [±1 mm]
Weight	2262 g
Magnetization Direction	↑ axial
Load capacity ~ ?	650.00 kg / 6374.32 N
Coating	[Epoxy] Epoxy
Series	SilverBlack
Holder Type	2 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 11 000 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 N52

Specification / characteristics UMP 94x40 [3xM10] GW F550 Silver Black Lina / 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

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

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%

Environmental data

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: 210491-2026

Magnet Unit Converter

Magnet pull force

Newtons (N)

Force in lbs

Magnetic Induction

Tesla (T)

Enter a value into a field, to see the remaining units change in real-time.

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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 650.00 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.

The 2xTwo-Side version is more versatile, allowing the eyelet to be mounted in two positions. Top mounting works well when fishing from a bridge, pier, or well (vertical technique). 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. Despite solid construction, neodymium is a brittle material and can chip upon very strong impact (e.g., against concrete). After each fishing trip, we recommend rinsing the magnet with fresh water and drying it.

We offer both standalone holders and ready-made gift sets (depending on the selected option in the store). A full set usually contains: magnet, polypropylene rope with appropriate strength, protective gloves, hook, and carabiner. Using thread glue is crucial to not lose the magnet in silt.

It is a technical parameter defining perpendicular break force, not the weight of an object in water. The magnet may slide on round elements (bicycle frame) due to the small contact area. 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. We recommend familiarizing yourself with current local regulations and heritage protection laws.

By choosing Dhit GOLD mounts, you get a product of a significantly higher standard and true magnetic power for the average cost.

The GOLD series utilize heavy-duty, thick-walled steel that acts as a real armor for the brittle neodymium.

It is worth remembering that the same mount used by the side hook can actually show only a fraction of power instead of the promised 200 kg. Crucially, in the web, it is hard to find videos demonstrating the real side-pull force of other brands on the side hook.

{In contrast to competitors importing from China, Dhit provides full support and real warranty help, which gives peace of mind after the purchase. Every mount is checked before delivery, which guarantees that you the set will be of the highest quality.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Benefits

Apart from their superior magnetic energy, neodymium magnets have these key benefits:

They have unchanged lifting capacity, and over nearly ten years their attraction force decreases symbolically – ~1% (according to theory),
Magnets perfectly defend themselves against loss of magnetization caused by foreign field sources,
A magnet with a smooth nickel surface has better aesthetics,
The surface of neodymium magnets generates a concentrated magnetic field – this is one of their assets,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
Possibility of precise shaping and modifying to specific requirements,
Versatile presence in modern technologies – they serve a role in hard drives, electric drive systems, precision medical tools, also multitasking production systems.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Cons of neodymium magnets and ways of using them

They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Limited ability of producing nuts in the magnet and complex shapes - preferred is cover - magnetic holder.
Potential hazard to health – tiny shards of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these devices can be problematic in diagnostics medical when they are in the body.
With budget limitations the cost of neodymium magnets is economically unviable,

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what affects it?

The force parameter is a measurement result performed under specific, ideal conditions:

using a sheet made of low-carbon steel, functioning as a ideal flux conductor
whose thickness equals approx. 10 mm
characterized by even structure
without the slightest clearance 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

In real-world applications, the actual lifting capacity results from several key aspects, listed from the most important:

Distance – the presence of foreign body (paint, tape, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Direction of force – maximum parameter is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
Metal thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
Material type – the best choice is pure iron steel. Cast iron may attract less.
Smoothness – ideal contact is obtained only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
Thermal environment – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.

Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate reduces the holding force.

Precautions when working with NdFeB magnets

Dust is flammable

Mechanical processing of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Bone fractures

Big blocks can smash fingers instantly. Do not place your hand betwixt two strong magnets.

Threat to navigation

A powerful magnetic field interferes with the operation of compasses in smartphones and navigation systems. Do not bring magnets close to a device to avoid damaging the sensors.

Power loss in heat

Watch the temperature. Exposing the magnet to high heat will destroy its properties and pulling force.

Respect the power

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

Pacemakers

Individuals with a ICD have to keep an safe separation from magnets. The magnetic field can disrupt the operation of the life-saving device.

Allergic reactions

Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation appears, immediately stop handling magnets and use protective gear.

Eye protection

Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. Eye protection is mandatory.

Electronic devices

Avoid bringing magnets close to a wallet, computer, or TV. The magnetism can destroy these devices and wipe information from cards.

Product not for children

These products are not suitable for play. Swallowing multiple magnets may result in them attracting across intestines, which constitutes a direct threat to life and necessitates urgent medical intervention.

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

UMP 94x40 [3xM10] GW F550 Silver Black Lina / N52 - search holder

Technical parameters of the product - UMP 94x40 [3xM10] GW F550 Silver Black Lina / N52 - search holder

Magnetic properties of material N52

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Environmental data

Magnet pull force

Magnetic Induction

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

SMZR 32x225 / N52 - magnetic separator with handle

HH 25x7.7 [M5] / N38 - through hole magnetic holder

MW 10x5 / N38 - cylindrical magnet

Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

Cons

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what affects it?

Key elements affecting lifting force

Precautions when working with NdFeB magnets

Dust is flammable

Bone fractures

Threat to navigation

Power loss in heat

Respect the power

Pacemakers

Allergic reactions

Eye protection

Electronic devices

Product not for children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages and disadvantages of Nd₂Fe₁₄B magnets.