Product available Ships tomorrow

UMP 97x40 [M8+M10] GW F300 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 210383

GTIN/EAN: 5906301814023

5.00

Diameter Ø

97 mm [±1 mm]

Height

40 mm [±1 mm]

Weight

2200 g

Load capacity

380.00 kg / 3726.53 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 10 000 Gauss [±5%]

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370.00 ZŁ with VAT / pcs + price for transport

300.81 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Contact us by phone +48 22 499 98 98 if you prefer contact us using contact form through our site.
Lifting power along with shape of neodymium magnets can be tested on our power calculator.

Same-day processing 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!

Physical properties - UMP 97x40 [M8+M10] GW F300 Lina / N38 - search holder

Specification / characteristics - UMP 97x40 [M8+M10] GW F300 Lina / N38 - search holder

properties

properties	values
Cat. no.	210383
GTIN/EAN	5906301814023
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	97 mm [±1 mm]
Height	40 mm [±1 mm]
Weight	2200 g
Load capacity ~ ?	380.00 kg / 3726.53 N
Coating	[NiCuNi] Nickel
Holder Type	2 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 10 000 Gauss [±5%]
Rope Length	25 m
Rope Capacity	~ 1595 kg
Rope Diameter	Ø 8 mm
Gloves	1 pair
Size/Mount Quantity	2xM8/1xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMP 97x40 [M8+M10] GW F300 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

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: 210383-2026

Magnet Unit Converter

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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. It is equipment that can handle pulling heavy and silted objects from the river bottom. The choice depends on whether you plan to throw from the shore (double-sided) or from a bridge (single-sided).

The 2xTwo-Side version is more versatile, allowing the eyelet to be mounted in two positions. The side eyelet ensures the magnet doesn't stand sideways or "on edge" during pulling. The double-sided version increases search efficiency by 100%.

This construction protects the brittle neodymium from direct impact against stones and the bottom. 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). 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., 380.00 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. Therefore, to pull objects weighing 10kg from the water, a magnet with a capacity of 200-300kg is often needed.

If you find a dangerous object (unexploded ordnance) or an antique, you have a legal obligation to report it to appropriate services (Police, conservator). It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.

In contrast to other brands, Dhit uses the highest quality materials, which translates into a better results during every trip to the water.

As a result, despite the affordable cost, the lifespan of the GOLD mount puts it a step above the competition.

It is worth remembering that the same mount pulled by the lateral point can actually show only 40 kg of power instead of the declared 200 kg. The Dhit brand guarantees full transparency by providing the real parameters of the gear, so you can be sure during real field work.

{Unlike anonymous sellers, Dhit provides full support and instant warranty help, which is crucial after the purchase. Every mount is checked before delivery, which guarantees that you the set will be of the defect-free.

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.

Pros

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

They have constant strength, and over more than 10 years their attraction force decreases symbolically – ~1% (in testing),
They have excellent resistance to weakening of magnetic properties due to external fields,
A magnet with a shiny silver surface has better aesthetics,
Neodymium magnets ensure maximum magnetic induction on a small surface, which allows for strong attraction,
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 individual forming as well as adapting to precise needs,
Significant place in modern technologies – they are commonly used in computer drives, electric drive systems, diagnostic systems, and other advanced devices.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:

Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a special holder, which not only protects them against impacts but also raises their durability
When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
Due to limitations in producing threads and complicated forms in magnets, we recommend using casing - magnetic holder.
Potential hazard related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. It is also worth noting that small components of these products can disrupt the diagnostic process medical after entering the body.
Due to expensive raw materials, their price exceeds standard values,

Lifting parameters

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

Breakaway force was defined for the most favorable conditions, including:

with the use of a sheet made of low-carbon steel, ensuring maximum field concentration
possessing a thickness of minimum 10 mm to ensure full flux closure
with an ideally smooth touching surface
without any insulating layer between the magnet and steel
for force applied at a right angle (pull-off, not shear)
at conditions approx. 20°C

Lifting capacity in real conditions – factors

Effective lifting capacity is affected by specific conditions, such as (from priority):

Clearance – the presence of foreign body (paint, tape, air) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
Angle of force application – maximum parameter is reached only during pulling at a 90° angle. The force required to slide of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
Steel thickness – insufficiently thick sheet does not accept the full field, causing part of the power to be wasted into the air.
Material type – ideal substrate is pure iron steel. Hardened steels may generate lower lifting capacity.
Surface quality – the more even the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
Temperature influence – high temperature weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate lowers the load capacity.

Precautions when working with NdFeB magnets

Life threat

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

GPS Danger

Remember: rare earth magnets generate a field that confuses precision electronics. Maintain a safe distance from your phone, tablet, and GPS.

Skin irritation risks

Medical facts indicate that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, refrain from direct skin contact and opt for versions in plastic housing.

Data carriers

Powerful magnetic fields can erase data on payment cards, HDDs, and storage devices. Maintain a gap of at least 10 cm.

Magnets are brittle

NdFeB magnets are ceramic materials, which means they are prone to chipping. Impact of two magnets leads to them shattering into small pieces.

Handling guide

Use magnets with awareness. Their huge power can surprise even experienced users. Stay alert and do not underestimate their force.

Crushing risk

Danger of trauma: The attraction force is so immense that it can result in blood blisters, pinching, and broken bones. Use thick gloves.

Do not give to children

Neodymium magnets are not toys. Eating a few magnets can lead to them attracting across intestines, which constitutes a severe health hazard and requires immediate surgery.

Flammability

Drilling and cutting of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Demagnetization risk

Do not overheat. Neodymium magnets are susceptible to heat. If you need resistance above 80°C, ask us about special high-temperature series (H, SH, UH).

Danger! Want to know more? Check our post: Are neodymium magnets dangerous?

UMP 97x40 [M8+M10] GW F300 Lina / N38 - search holder

Physical properties - UMP 97x40 [M8+M10] GW F300 Lina / N38 - search holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Environmental data

Pulling force

Magnetic Induction

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Strengths as well as weaknesses of Nd2Fe14B magnets.

Pros

Disadvantages

Lifting parameters

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

Lifting capacity in real conditions – factors

Precautions when working with NdFeB magnets

Life threat

GPS Danger

Skin irritation risks

Data carriers

Magnets are brittle

Handling guide

Crushing risk

Do not give to children

Flammability

Demagnetization risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.