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 tomorrow

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%]

see specifications »

350.00 ZŁ with VAT / pcs + price for transport

284.55 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

284.55 ZŁ

350.00 ZŁ

price from 5 pcs

267.48 ZŁ

329.00 ZŁ

price from 10 pcs

250.40 ZŁ

308.00 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Do you have trouble choosing?

Call us +48 888 99 98 98 if you prefer let us know through contact form the contact section.
Parameters along with shape of a neodymium magnet can be analyzed with our online calculation tool.

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 - 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

Engineering data and GPSR

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

Measurement Calculator

Magnet pull force

Force in kg

Newtons (N)

Force in lbs

Magnetic Induction

Induction (Gs)

Tesla (T)

Put a figure in just one slot to see the conversion in all other fields right away.

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MP 60x20x5 / N38 - ring magnet

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MW 14x10 / N38 - cylindrical magnet

6.84 ZŁ brutto / pcs

The best choice are magnets in thick, chrome-plated housings dedicated to water applications. This specific magnet ensures a laboratory lifting capacity of up to 650.00 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. 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.

The magnet is glued into a solid steel cup and sealed with epoxy resin, protecting it from water. Avoid throwing the magnet against bridge pillars or hard obstacles. Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.

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. 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. 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). Magnet fishing is an eco-friendly hobby if you clean the river from trash and scrap.

It is the smartest investment because for the same money, you buy a premium mount that will serve you for many seasons than generic imports.

Consequently, despite the affordable cost, the lifespan of the Dhit product puts it a step above the competition.

Many sellers use a trick by promoting the power measured exclusively on the top hook. GOLD mounts guarantees honest data by stating the actual capabilities of the gear, so you avoid disappointment during real field work.

{Unlike anonymous sellers, Dhit provides full support and real service assistance, which gives peace of mind after the transaction. Instead of risking with random brands, it is better to choose the market leader that cares about the satisfaction of every user.

Advantages as well as disadvantages of rare earth magnets.

Pros

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

They have stable power, and over more than ten years their attraction force decreases symbolically – ~1% (in testing),
They maintain their magnetic properties even under strong external field,
A magnet with a shiny gold surface is more attractive,
Neodymium magnets generate maximum magnetic induction on a small area, which increases force concentration,
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...
Thanks to flexibility in designing and the capacity to customize to individual projects,
Wide application in electronics industry – they are utilized in magnetic memories, drive modules, advanced medical instruments, and industrial machines.
Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
Limited ability of creating nuts in the magnet and complicated shapes - recommended is a housing - magnetic holder.
Health risk related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to be problematic in diagnostics medical after entering the body.
With mass production the cost of neodymium magnets is a challenge,

Lifting parameters

Breakaway strength of the magnet in ideal conditions – what contributes to it?

The declared magnet strength represents the maximum value, measured under laboratory conditions, namely:

with the application of a yoke made of special test steel, ensuring full magnetic saturation
whose transverse dimension equals approx. 10 mm
characterized by lack of roughness
with zero gap (no coatings)
during pulling in a direction perpendicular to the plane
at standard ambient temperature

Key elements affecting lifting force

In practice, the actual lifting capacity depends on a number of factors, listed from crucial:

Distance – existence of foreign body (paint, dirt, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
Direction of force – maximum parameter is reached only during pulling at a 90° angle. The force required to slide of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
Steel thickness – too thin plate does not accept the full field, causing part of the power to be escaped into the air.
Steel type – mild steel attracts best. Alloy admixtures lower magnetic permeability and lifting capacity.
Smoothness – ideal contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
Temperature influence – hot environment reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was determined by applying a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the load capacity.

H&S for magnets

Metal Allergy

Certain individuals have a hypersensitivity to nickel, which is the typical protective layer for neodymium magnets. Frequent touching might lead to dermatitis. We strongly advise use protective gloves.

Finger safety

Pinching hazard: The pulling power is so great that it can cause hematomas, pinching, and broken bones. Use thick gloves.

Thermal limits

Regular neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. This process is irreversible.

Immense force

Use magnets consciously. Their powerful strength can surprise even experienced users. Plan your moves and do not underestimate their force.

Swallowing risk

Absolutely store magnets away from children. Choking hazard is high, and the consequences of magnets clamping inside the body are life-threatening.

Compass and GPS

A powerful magnetic field disrupts the functioning of compasses in phones and GPS navigation. Maintain magnets close to a device to avoid damaging the sensors.

Electronic devices

Powerful magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Stay away of min. 10 cm.

Medical interference

Individuals with a pacemaker should keep an large gap from magnets. The magnetism can disrupt the functioning of the implant.

Machining danger

Fire warning: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.

Magnet fragility

Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Caution! More info about hazards in the article: Magnet Safety Guide.

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

Technical - 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)

Magnet pull force

Magnetic Induction

Other proposals

MPL 15x10x2 / N38 - lamellar magnet

MPL 25x25x10 / N38 - lamellar magnet

MP 60x20x5 / N38 - ring magnet

MW 14x10 / N38 - cylindrical magnet

Advantages as well as disadvantages of rare earth magnets.

Pros

Cons

Lifting parameters

Breakaway strength of the magnet in ideal conditions – what contributes to it?

Key elements affecting lifting force

H&S for magnets

Metal Allergy

Finger safety

Thermal limits

Immense force

Swallowing risk

Compass and GPS

Electronic devices

Medical interference

Machining danger

Magnet fragility

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C