UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

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UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - 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 210476

GTIN/EAN: 5906301814139

5.00

Diameter Ø

75 mm [±1 mm]

Height

25 mm [±1 mm]

Weight

1800 g

Load capacity

601.00 kg / 5893.80 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 20 000 Gauss [±5%]

see 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

Not sure about your choice?

Call us now +48 22 499 98 98 alternatively drop us a message using request form through our site.
Weight along with shape of a neodymium magnet can be tested on our magnetic mass 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!

The Dual version features two threaded sockets for the eyebolt, whereas the standard one has only one. This allows for searching both vertically (from a bridge) and horizontally (from the shore). Single-mount magnets are less versatile when dragging from a riverbank.

Selecting the Dual version offers several advantages:
Larger contact area: More space to attract objects.
Versatility: Possibility to use two mounts separately or together.
Greater combined force: The combined power of two F200 GOLD holders is nearly 600 kg.
Robustness: Solid construction.
Great price-performance ratio: The set of two F200 GOLD holders offers better value than buying separately.

Certainly, the UMP F200 GOLD in the dual (double) version is an excellent choice for every seeker who values performance and flexibility.

Technical parameters of the product - UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

Specification / characteristics - UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

properties

properties	values
Cat. no.	210476
GTIN/EAN	5906301814139
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	75 mm [±1 mm]
Height	25 mm [±1 mm]
Weight	1800 g
Load capacity ~ ?	601.00 kg / 5893.80 N
Coating	[NiCuNi] Nickel
Series	GOLD
Holder Type	4 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 20 000 Gauss [±5%]
Rope Length	25 m
Rope Capacity	~ 1595 kg
Rope Diameter	Ø 8 mm
Gloves	1 pair
Size/Mount Quantity	4xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N42

Specification / characteristics UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

properties	values	units
remenance Br [min. - max.] ?	12.9-13.2	kGs
remenance Br [min. - max.] ?	1290-1320	mT
coercivity bHc ?	10.8-12.0	kOe
coercivity bHc ?	860-955	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	40-42	BH max MGOe
energy density [min. - max.] ?	318-334	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%

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: 210476-2026

Magnet Unit Converter

Force (pull)

Force in kg

Force (N)

Pounds (lbs)

Magnetic Field

Tesla (T)

Input data in a box, to see the rest change instantly.

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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. Model UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 offers an optimal weight-to-pull force ratio, which is important for repeated throwing. For beginners, we recommend lighter single-sided models (F80-F200), for advanced users - heavier double-sided (Two-Side) ones.

Double-sided holders (Two-Side) have two active magnetic surfaces and two mounting holes. 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.

Our holders have a thick steel housing covered with an anti-corrosion layer (chrome, nickel, zinc). Despite solid construction, neodymium is a brittle material and can chip upon very strong impact (e.g., against concrete). 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.

The capacity given in the name (e.g., 601.00 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.

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.

Unlike other brands, Dhit does not cut corners on materials, which translates into a better results during treasure hunting.

The unique way of mounting the magnet in the Dhit housing builds a unified structure that absorbs impacts while fishing on rough surfaces.

Many sellers employ a tactic by promoting the pull force tested exclusively on the vertical mount. GOLD mounts guarantees honest data by stating the actual capabilities of the magnet, so you avoid disappointment during real field work.

{Unlike competitors importing from China, Dhit provides expert advice and real service assistance, which gives peace of mind after the purchase. Instead of risking with unknown goods, it is better to choose the market leader that cares about the satisfaction of searcher.

Advantages and disadvantages of neodymium magnets.

Strengths

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

They have unchanged lifting capacity, and over around ten years their performance decreases symbolically – ~1% (in testing),
They do not lose their magnetic properties even under strong external field,
In other words, due to the shiny layer of gold, the element looks attractive,
Magnetic induction on the working layer of the magnet turns out to be extremely intense,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
In view of the option of flexible forming and customization to custom projects, neodymium magnets can be created in a wide range of shapes and sizes, which makes them more universal,
Versatile presence in high-tech industry – they are utilized in magnetic memories, electric motors, medical devices, also complex engineering applications.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Cons of neodymium magnets: weaknesses and usage proposals

Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
Neodymium 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
Magnets exposed to a humid environment can rust. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Due to limitations in creating nuts and complicated shapes in magnets, we propose using cover - magnetic mount.
Health risk related to microscopic parts of magnets are risky, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these magnets can complicate diagnosis medical when they are in the body.
With budget limitations the cost of neodymium magnets is a challenge,

Holding force characteristics

Highest magnetic holding force – what it depends on?

Holding force of 601.00 kg is a measurement result conducted under standard conditions:

on a block made of structural steel, perfectly concentrating the magnetic flux
with a thickness minimum 10 mm
characterized by even structure
without any air gap between the magnet and steel
during detachment in a direction perpendicular to the plane
in temp. approx. 20°C

Determinants of practical lifting force of a magnet

Holding efficiency is influenced by specific conditions, including (from most important):

Gap (betwixt the magnet and the plate), as even a very small distance (e.g. 0.5 mm) leads to a reduction in force by up to 50% (this also applies to paint, rust or debris).
Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of nominal force).
Base massiveness – too thin plate does not close the flux, causing part of the power to be lost to the other side.
Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures decrease magnetic properties and lifting capacity.
Surface finish – full contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast 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

Handling rules

Exercise caution. Neodymium magnets act from a distance and connect with huge force, often faster than you can move away.

GPS and phone interference

A strong magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Keep magnets close to a smartphone to avoid breaking the sensors.

Demagnetization risk

Do not overheat. NdFeB magnets are susceptible to temperature. If you require operation above 80°C, inquire about HT versions (H, SH, UH).

Nickel allergy

Medical facts indicate that nickel (standard magnet coating) is a potent allergen. If you have an allergy, prevent direct skin contact and choose coated magnets.

Health Danger

Life threat: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.

Hand protection

Large magnets can smash fingers in a fraction of a second. Under no circumstances place your hand between two attracting surfaces.

Beware of splinters

Neodymium magnets are ceramic materials, meaning they are very brittle. Collision of two magnets will cause them shattering into small pieces.

Do not drill into magnets

Powder generated during cutting of magnets is flammable. Do not drill into magnets unless you are an expert.

Do not give to children

Adult use only. Small elements pose a choking risk, causing severe trauma. Keep out of reach of children and animals.

Cards and drives

Very strong magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.

Attention! Details about hazards in the article: Magnet Safety Guide.

UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

Technical parameters of the product - UMP 75x25 [M10x3] GW F200 GOLD DUAL Lina / N42 - search holder

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Sustainability

Force (pull)

Magnetic Field

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Advantages and disadvantages of neodymium magnets.

Strengths

Weaknesses

Holding force characteristics

Highest magnetic holding force – what it depends on?

Determinants of practical lifting force of a magnet

Safety rules for work with NdFeB magnets

Handling rules

GPS and phone interference

Demagnetization risk

Nickel allergy

Health Danger

Hand protection

Beware of splinters

Do not drill into magnets

Do not give to children

Cards and drives

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C