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: PLN 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%]

check 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?

Call us now +48 22 499 98 98 if you prefer get in touch via contact form the contact page.
Strength as well as structure of neodymium magnets can be verified with our power calculator.

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

💡 Guide: How to choose a decent magnet and not get ripped off?

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 of the product - 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

Technical specification and ecology

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%

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: 210337-2026

Measurement Calculator

Pulling force

Kilograms (kg)

Newtons (N)

lbs

Magnetic Induction

Induction (Gs)

Induction (T)

Just fill in a single box, to let the tool calculate everything else instantly.

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For underwater searches, we recommend specialized holders from the GOLD series, designed for working in difficult conditions. 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).

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%.

Our holders have a thick steel housing covered with an anti-corrosion layer (chrome, nickel, zinc). The housing significantly increases lifespan but does not make the magnet completely indestructible. After each fishing trip, we recommend rinsing the magnet with fresh water and drying it.

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. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.

The capacity given in the name (e.g., 380.00 kg) is the maximum value measured in laboratory conditions. The magnet may slide on round elements (bicycle frame) due to the small contact area. 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. We recommend familiarizing yourself with current local regulations and heritage protection laws.

It is the smartest investment because for the same money, you buy a premium mount that will last for much longer than generic imports.

Dhit GOLD mounts feature heavy-duty, thick-walled steel that acts as a real armor for the magnetic core.

You should know that the same magnet pulled by the lateral point can actually show only a fraction of strength instead of the promised 200 kg. Crucially, in the web, there are virtually no videos testing the actual strength of other brands on the lateral attachment.

{By choosing GOLD mounts, you support Polish engineering that perfectly understands the conditions of local rivers and lakes. Every mount is individually inspected before shipping, which guarantees that you receive equipment of the highest quality.

Strengths and weaknesses of neodymium magnets.

Advantages

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They retain full power for around 10 years – the drop is just ~1% (based on simulations),
They maintain their magnetic properties even under external field action,
By applying a lustrous layer of silver, the element acquires an modern look,
Magnets possess huge magnetic induction on the working surface,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
Possibility of custom machining as well as adapting to precise requirements,
Key role in advanced technology sectors – they are used in HDD drives, electric drive systems, medical equipment, and multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in miniature devices

Cons

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

They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (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 very resistant to heat
When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
We suggest casing - magnetic holder, due to difficulties in realizing nuts inside the magnet and complex shapes.
Health risk related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that small components of these magnets are able to disrupt the diagnostic process medical after entering the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum lifting capacity of the magnet – what contributes to it?

The force parameter is a measurement result conducted under standard conditions:

using a sheet made of high-permeability steel, acting as a magnetic yoke
with a cross-section no less than 10 mm
with an ideally smooth touching surface
without the slightest clearance between the magnet and steel
for force applied at a right angle (in the magnet axis)
at ambient temperature room level

Determinants of lifting force in real conditions

Real force is influenced by specific conditions, including (from priority):

Gap (betwixt the magnet and the plate), as even a very small distance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to paint, rust or debris).
Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds much less (often approx. 20-30% of nominal force).
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
Metal type – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
Surface finish – full contact is possible only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.

H&S for magnets

Life threat

Warning for patients: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or request help to work with the magnets.

Do not underestimate power

Handle magnets consciously. Their immense force can surprise even experienced users. Stay alert and do not underestimate their force.

Keep away from computers

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

Neodymium magnets are not intended for children. Swallowing several magnets can lead to them pinching intestinal walls, which constitutes a severe health hazard and requires urgent medical intervention.

Pinching danger

Pinching hazard: The pulling power is so great that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Eye protection

Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.

Nickel coating and allergies

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, cease working with magnets and use protective gear.

Precision electronics

GPS units and smartphones are highly susceptible to magnetism. Close proximity with a strong magnet can decalibrate the internal compass in your phone.

Maximum temperature

Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and strength.

Combustion hazard

Mechanical processing of NdFeB material poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Security! Details about hazards in the article: Safety of working with magnets.

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

Technical of the product - 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

Environmental data

Pulling force

Magnetic Induction

See more products

MPL 30x20x4 / N38 - lamellar magnet

MPL 50x20x10 / N38 - lamellar magnet

SM 32x175 [2xM8] / N42 - magnetic separator

MP 40x22x10 / N38 - ring magnet

Strengths and weaknesses of neodymium magnets.

Advantages

Cons

Holding force characteristics

Maximum lifting capacity of the magnet – what contributes to it?

Determinants of lifting force in real conditions

H&S for magnets

Life threat

Do not underestimate power

Keep away from computers

Product not for children

Pinching danger

Eye protection

Nickel coating and allergies

Precision electronics

Maximum temperature

Combustion hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C