Product available Ships today (order by 14:00)

UMP 94x40 [3xM10] GW F550 Silver Black Lina / 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 210491

GTIN/EAN: 5906301814153

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 parameters »

400.00 ZŁ with VAT / pcs + price for transport

325.20 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Pick up the phone and ask +48 888 99 98 98 if you prefer contact us by means of inquiry form our website.
Specifications and shape of magnetic components can be tested with our modular calculator.

Order by 14:00 and we’ll ship 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!

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

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

properties

properties	values
Cat. no.	210491
GTIN/EAN	5906301814153
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%]
Rope Length	25 m
Rope Capacity	~ 1595 kg
Rope Diameter	Ø 8 mm
Gloves	1 pair
Size/Mount Quantity	3xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N52

Specification / characteristics UMP 94x40 [3xM10] GW F550 Silver Black Lina / 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 and environmental data

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%

Sustainability

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: 210491-2026

Magnet Unit Converter

Pulling force

Kilograms (kg)

Force (N)

Pounds (lbs)

Magnetic Field

Gauss (Gs)

Type a value in any box, and the rest will recalculate on the fly.

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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. For beginners, we recommend lighter single-sided models (F80-F200), for advanced users - heavier double-sided (Two-Side) ones.

The 2xTwo-Side version is more versatile, allowing the eyelet to be mounted in two positions. Side mounting is ideal for throwing from the shore, as the magnet drags flat along the bottom. 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. After each fishing trip, we recommend rinsing the magnet with fresh water and drying it.

Most of our starter kits are complete and ready to use. We often add thread glue to secure the eyelet against unscrewing in water. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.

The capacity given in the name (e.g., 650.00 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.

If you find a dangerous object (unexploded ordnance) or an antique, you have a legal obligation to report it to appropriate services (Police, conservator). We recommend familiarizing yourself with current local regulations and heritage protection laws.

It is the best value because for the same money, you obtain a premium mount that will last for much longer than generic imports.

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

It is worth remembering that the identical magnet used by the lateral point can actually show only a fraction of power instead of the promised 200 kg. The Dhit brand guarantees full transparency by providing the actual capabilities of the magnet, so you avoid disappointment during real field work.

{Unlike competitors importing from China, Dhit provides full support and real warranty help, which is crucial after the purchase. Every product is checked before shipping, which guarantees that you receive equipment of the defect-free.

Strengths as well as weaknesses of neodymium magnets.

Strengths

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

They virtually do not lose strength, because even after ten years the performance loss is only ~1% (in laboratory conditions),
They are resistant to demagnetization induced by external disturbances,
Thanks to the glossy finish, the surface of nickel, gold-plated, or silver gives an elegant appearance,
Magnetic induction on the top side of the magnet remains extremely intense,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
Possibility of exact creating and adapting to specific conditions,
Versatile presence in future technologies – they serve a role in HDD drives, electromotive mechanisms, diagnostic systems, as well as modern systems.
Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Limitations

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

At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
NdFeB magnets lose power 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 extremely resistant to heat
They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Limited ability of producing threads in the magnet and complex forms - preferred is casing - magnet mounting.
Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which becomes key in the context of child safety. Furthermore, tiny parts of these devices are able to disrupt the diagnostic process medical when they are in the body.
Due to neodymium price, their price exceeds standard values,

Lifting parameters

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

Information about lifting capacity was defined for ideal contact conditions, including:

on a base made of structural steel, effectively closing the magnetic flux
possessing a massiveness of minimum 10 mm to ensure full flux closure
with an polished touching surface
with total lack of distance (without coatings)
for force applied at a right angle (pull-off, not shear)
in neutral thermal conditions

Practical aspects of lifting capacity – factors

It is worth knowing that the working load will differ influenced by elements below, in order of importance:

Clearance – existence of any layer (paint, tape, air) interrupts the magnetic circuit, which lowers capacity rapidly (even by 50% at 0.5 mm).
Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
Plate thickness – insufficiently thick steel does not close the flux, causing part of the power to be wasted into the air.
Steel type – mild steel gives the best results. Alloy steels lower magnetic permeability and holding force.
Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
Thermal factor – hot environment weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was assessed using a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate lowers the lifting capacity.

Precautions when working with neodymium magnets

Flammability

Dust produced during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Warning for heart patients

For implant holders: Powerful magnets affect medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.

Caution required

Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Serious injuries

Mind your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!

Magnets are brittle

NdFeB magnets are sintered ceramics, meaning they are very brittle. Impact of two magnets will cause them shattering into shards.

Operating temperature

Watch the temperature. Exposing the magnet to high heat will ruin its magnetic structure and strength.

Phone sensors

Be aware: rare earth magnets generate a field that disrupts sensitive sensors. Maintain a separation from your mobile, tablet, and navigation systems.

Allergic reactions

Certain individuals have a sensitization to Ni, which is the typical protective layer for neodymium magnets. Frequent touching may cause an allergic reaction. We strongly advise wear protective gloves.

Swallowing risk

Always store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are fatal.

Electronic hazard

Do not bring magnets near a wallet, laptop, or screen. The magnetism can destroy these devices and wipe information from cards.

Danger! Looking for details? Read our article: Are neodymium magnets dangerous?

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

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

Magnetic properties of material N52

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Sustainability

Pulling force

Magnetic Field

View also proposals

MW 29x10 / N38 - cylindrical magnet

UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread

MPL 30x20x4 / N38 - lamellar magnet

UI 45x13x6 [C321] / N38 - badge holder

Strengths as well as weaknesses of neodymium magnets.

Strengths

Limitations

Lifting parameters

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

Practical aspects of lifting capacity – factors

Precautions when working with neodymium magnets

Flammability

Warning for heart patients

Caution required

Serious injuries

Magnets are brittle

Operating temperature

Phone sensors

Allergic reactions

Swallowing risk

Electronic hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C