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

UMP 94x40 [3xM10] GW F550 Silver Black / N52 - search holder - ujęcie 2

Product available Ships today (order by 14:00)

UMP 94x40 [3xM10] GW F550 Silver Black / 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 210490

GTIN/EAN: 5906301814146

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%]

view specifications »

350.00 ZŁ with VAT / pcs + price for transport

284.55 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 1 pcs

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350.00 ZŁ

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267.48 ZŁ

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price from 10 pcs

250.40 ZŁ

308.00 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need advice?

Call us +48 888 99 98 98 alternatively send us a note using inquiry form the contact page.
Strength and appearance of a neodymium magnet can be verified with our force calculator.

Orders submitted before 14:00 will be dispatched today!

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

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

properties

properties	values
Cat. no.	210490
GTIN/EAN	5906301814146
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%]
Size/Mount Quantity	3xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N52

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

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%

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: 210490-2026

Magnet Unit Converter

Force (pull)

Force in kg

Newtons (N)

Force in lbs

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For underwater searches, we recommend specialized holders from the GOLD series, designed for working in difficult conditions. 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 double-sided model attracts from above and below, increasing the chance of hooking a find. The side eyelet ensures the magnet doesn't stand sideways or "on edge" during pulling. Single-sided magnets are usually lighter and cheaper but less effective for long throws.

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. 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. 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.

The capacity given in the name (e.g., 650.00 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%. Therefore, to pull objects weighing 10kg from the water, a magnet with a capacity of 200-300kg is often needed.

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.

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

Most competitor mounts have weak shells that crack during the first hard impact against concrete or rocks.

Many sellers employ a tactic by advertising the power measured only on the top hook. Interestingly, in the web, it is hard to find videos demonstrating the real side-pull force of competitor products on the lateral attachment.

{By choosing Dhit, you bet on a local market leader that perfectly understands the specifics of local rivers and lakes. Don't risk it with unknown goods, stick with the market leader that cares about the happiness of searcher.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Advantages

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

They retain full power for almost ten years – the drop is just ~1% (based on simulations),
They possess excellent resistance to magnetic field loss due to external magnetic sources,
In other words, due to the shiny surface of gold, the element gains visual value,
They are known for high magnetic induction at the operating surface, which affects their effectiveness,
Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures approaching 230°C and above...
Thanks to versatility in forming and the ability to adapt to complex applications,
Key role in electronics industry – they serve a role in hard drives, brushless drives, medical devices, and complex engineering applications.
Compactness – despite small sizes they generate large force, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:

At very strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
We suggest a housing - magnetic mount, due to difficulties in realizing nuts inside the magnet and complicated shapes.
Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products can disrupt the diagnostic process medical after entering the body.
With budget limitations the cost of neodymium magnets is economically unviable,

Lifting parameters

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

Holding force of 650.00 kg is a theoretical maximum value performed under the following configuration:

using a base made of high-permeability steel, serving as a ideal flux conductor
possessing a thickness of minimum 10 mm to avoid saturation
with a surface cleaned and smooth
without any clearance between the magnet and steel
for force acting at a right angle (in the magnet axis)
in neutral thermal conditions

Lifting capacity in practice – influencing factors

Real force is influenced by working environment parameters, including (from most important):

Gap (betwixt the magnet and the plate), since even a very small distance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to varnish, rust or debris).
Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
Chemical composition of the base – low-carbon steel gives the best results. Higher carbon content decrease magnetic permeability and lifting capacity.
Base smoothness – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
Temperature influence – high temperature weakens magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under perpendicular forces, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate reduces the holding force.

Safety rules for work with NdFeB magnets

GPS Danger

A powerful magnetic field interferes with the operation of compasses in smartphones and GPS navigation. Keep magnets close to a smartphone to prevent damaging the sensors.

Keep away from children

Neodymium magnets are not toys. Eating multiple magnets may result in them pinching intestinal walls, which constitutes a severe health hazard and requires urgent medical intervention.

Crushing force

Watch your fingers. Two large magnets will join immediately with a force of massive weight, crushing anything in their path. Be careful!

Medical interference

Life threat: Strong magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.

Warning for allergy sufferers

Certain individuals experience a sensitization to nickel, which is the typical protective layer for neodymium magnets. Frequent touching may cause a rash. We suggest use protective gloves.

Power loss in heat

Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.

Powerful field

Handle magnets consciously. Their immense force can shock even experienced users. Plan your moves and do not underestimate their force.

Fire risk

Drilling and cutting of neodymium magnets poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Safe distance

Device Safety: Neodymium magnets can ruin payment cards and sensitive devices (heart implants, medical aids, mechanical watches).

Material brittleness

NdFeB magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets leads to them shattering into shards.

Important! Want to know more? Read our article: Are neodymium magnets dangerous?

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

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

Magnetic properties of material N52

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Ecology and recycling (GPSR)

Force (pull)

Field Strength

Other proposals

MW 38x15 / N38 - cylindrical magnet

RM R7 SUPER - 13000 Gs / N52 - magnetic distributor

LM TLN - 15 SQ / N38 - magnetic leviton

UMS 20x8.6x4.5x7 / N38 - conical magnetic holder

Pros as well as cons of Nd2Fe14B magnets.

Advantages

Limitations

Lifting parameters

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

Lifting capacity in practice – influencing factors

Safety rules for work with NdFeB magnets

GPS Danger

Keep away from children

Crushing force

Medical interference

Warning for allergy sufferers

Power loss in heat

Powerful field

Fire risk

Safe distance

Material brittleness

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Pros as well as cons of Nd₂Fe₁₄B magnets.