Product available Ships today (order by 14:00)

UMP 97x40 [M8+M10] GW F300 kg / 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: 1-6500
Rating: 5

search holder

Catalog no 210337

GTIN/EAN: 5906301813965

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%]

product specifications »

300.00 ZŁ with VAT / pcs + price for transport

243.90 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Need advice?

Contact us by phone +48 888 99 98 98 or get in touch through contact form the contact form page.
Specifications as well as appearance of a magnet can be reviewed using our power calculator.

Orders submitted before 14:00 will be dispatched 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 97x40 [M8+M10] GW F300 kg / N38 - search holder

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

properties

properties	values
Cat. no.	210337
GTIN/EAN	5906301813965
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%]
Size/Mount Quantity	2xM8/1xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

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

Engineering data and GPSR

Material specification

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%

Ecology and recycling (GPSR)

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: 210337-2025

Quick Unit Converter

Force (pull)

Kilograms (kg)

Pounds (lbs)

Magnetic Induction

Gauss (Gs)

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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 380.00 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).

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). Single-sided magnets are usually lighter and cheaper but less effective for long throws.

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

Most of our starter kits are complete and ready to use. 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.

This force applies to perfect adherence with the entire surface to a smooth, clean steel plate with a min. thickness of 20mm. Dirt, rust, paint, and algae create a distance that weakens the magnet by even 70-80%. Therefore, to pull objects weighing 10kg from the water, a magnet with a capacity of 200-300kg is often needed.

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.

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

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

It is worth remembering that the same magnet used by the lateral point can actually show as little as a fraction of power instead of the promised 200 kg. The Dhit brand focuses on honest data by providing the actual capabilities of the gear, so you can be sure during treasure hunting.

{Unlike competitors importing from China, Dhit provides full support and real warranty help, which is crucial after the purchase. Every mount is individually inspected before delivery, which guarantees that you the set will be of the defect-free.

Pros and cons of Nd₂Fe₁₄B magnets.

Strengths

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

They retain attractive force for around 10 years – the loss is just ~1% (in theory),
They maintain their magnetic properties even under strong external field,
A magnet with a metallic nickel surface has better aesthetics,
The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Possibility of precise creating as well as optimizing to specific applications,
Wide application in electronics industry – they are used in mass storage devices, electric drive systems, medical equipment, as well as complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in small systems

Limitations

What to avoid - cons of neodymium magnets and proposals for their use:

At very strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power 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
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
Due to limitations in producing nuts and complicated forms in magnets, we propose using a housing - magnetic mount.
Potential hazard resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the context of child safety. It is also worth noting that small components of these devices can be problematic in diagnostics medical after entering the body.
Due to complex production process, their price is relatively high,

Pull force analysis

Detachment force of the magnet in optimal conditions – what contributes to it?

The lifting capacity listed is a result of laboratory testing performed under the following configuration:

using a sheet made of mild steel, functioning as a magnetic yoke
possessing a massiveness of min. 10 mm to ensure full flux closure
with a surface free of scratches
under conditions of gap-free contact (surface-to-surface)
for force acting at a right angle (in the magnet axis)
in stable room temperature

Key elements affecting lifting force

Please note that the magnet holding will differ subject to elements below, in order of importance:

Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Steel grade – the best choice is high-permeability steel. Stainless steels may attract less.
Base smoothness – the more even the surface, the better the adhesion and stronger the hold. Unevenness creates an air distance.
Thermal environment – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet’s surface and the plate reduces the load capacity.

H&S for magnets

Metal Allergy

Allergy Notice: The nickel-copper-nickel coating contains nickel. If an allergic reaction occurs, immediately stop handling magnets and use protective gear.

This is not a toy

NdFeB magnets are not intended for children. Accidental ingestion of several magnets may result in them pinching intestinal walls, which constitutes a severe health hazard and necessitates urgent medical intervention.

Electronic hazard

Device Safety: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

GPS Danger

GPS units and smartphones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can decalibrate the sensors in your phone.

Serious injuries

Protect your hands. Two large magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Be careful!

Do not overheat magnets

Monitor thermal conditions. Exposing the magnet to high heat will ruin its properties and strength.

ICD Warning

Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.

Machining danger

Machining of NdFeB material carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Safe operation

Handle magnets with awareness. Their powerful strength can shock even experienced users. Stay alert and do not underestimate their power.

Magnet fragility

Neodymium magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets leads to them shattering into small pieces.

Danger! Need more info? Check our post: Why are neodymium magnets dangerous?

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

Product card - UMP 97x40 [M8+M10] GW F300 kg / N38 - search holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Ecology and recycling (GPSR)

Force (pull)

Magnetic Induction

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Pros and cons of Nd2Fe14B magnets.

Strengths

Limitations

Pull force analysis

Detachment force of the magnet in optimal conditions – what contributes to it?

Key elements affecting lifting force

H&S for magnets

Metal Allergy

This is not a toy

Electronic hazard

GPS Danger

Serious injuries

Do not overheat magnets

ICD Warning

Machining danger

Safe operation

Magnet fragility

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Pros and cons of Nd₂Fe₁₄B magnets.