← previous
next →
Product available Ships today (order by 14:00)

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

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:

Need more?
price from 1 pcs
243.90 ZŁ
300.00 ZŁ
price from 5 pcs
229.27 ZŁ
282.00 ZŁ
price from 15 pcs
214.63 ZŁ
264.00 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
Not sure about your choice?

Give us a call +48 22 499 98 98 if you prefer contact us via contact form our website.
Force and appearance of magnetic components can be analyzed on our online calculation tool.

Same-day shipping for orders placed before 14:00.

💡 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 main difference lies in the presence of two mounting holes (top and side). 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.
Choosing this holder brings many benefits:
Double active surface: Increases the chance of catching items.
Versatility: Adapt to any fishing condition.
Greater combined force: The combined power of two F200 GOLD holders is nearly 600 kg.
Robustness: Solid construction.
Better value for money: An economical choice for serious magnet fishers.

For maximum efficiency, the Dual version is highly recommended.

Technical specification 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

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
Elemental analysis
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
Quick Unit Converter
Force (pull)
Magnetic Induction
Input data in any box, and the rest change on the fly.

Other proposals

MPL 40x20x5 / N38 - lamellar magnet
Product available Ships today (order by 14:00)

MPL 40x20x5 / N38 - lamellar magnet

12.24 ZŁ brutto / pcs
UMGGW 66x8.5 [M8] GW / N38 - magnetic holder rubber internal thread
Product available Ships today (order by 14:00)

UMGGW 66x8.5 [M8] GW / N38 - magnetic holder rubber internal thread

23.37 ZŁ brutto / pcs
JM 18x60 - jajka bez pudełka/cena za parę - magnetic eggs
Product available Ships today (order by 14:00)

JM 18x60 - jajka bez pudełka/cena za parę - magnetic eggs

8.99 ZŁ brutto / pcs
SM 25x100 [2xM8] / N52 - magnetic separator
Product available Ships today (order by 14:00)

SM 25x100 [2xM8] / N52 - magnetic separator

319.80 ZŁ brutto / pcs
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).
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. 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. Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.
Most of our starter kits are complete and ready to use. A full set usually contains: magnet, polypropylene rope with appropriate strength, protective gloves, hook, and carabiner. 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. Dirt, rust, paint, and algae create a distance that weakens the magnet by even 70-80%. A large power reserve is essential in real search conditions.
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.
In contrast to many market offers, Dhit uses the highest quality materials, which translates into a clear advantage during treasure hunting.
Most magnets on the market have weak shells that deform during the any strong impact against concrete or rocks.
It is worth remembering that the same magnet pulled by the lateral point often has as little as a fraction of power instead of the promised 200 kg. Interestingly, in the web, there are virtually no recordings testing the actual strength of competitor products on the lateral attachment.
{Unlike anonymous sellers, Dhit provides full support and real service assistance, which is crucial after the purchase. Every product is individually inspected before delivery, which ensures that you receive equipment of the highest quality.

Pros and cons of rare earth magnets.

Benefits

Apart from their consistent magnetic energy, neodymium magnets have these key benefits:
  • They do not lose strength, even over approximately ten years – the reduction in strength is only ~1% (according to tests),
  • They are noted for resistance to demagnetization induced by external disturbances,
  • The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to look better,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to the ability of flexible shaping and customization to specialized projects, NdFeB magnets can be created in a broad palette of geometric configurations, which expands the range of possible applications,
  • Huge importance in innovative solutions – they are used in data components, motor assemblies, advanced medical instruments, and complex engineering applications.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Weaknesses

Cons of neodymium magnets and ways of using them
  • At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
  • We recommend casing - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complicated forms.
  • Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that tiny parts 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

Lifting parameters

Detachment force of the magnet in optimal conditions – what affects it?

The load parameter shown represents the maximum value, obtained under optimal environment, namely:
  • with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • whose thickness equals approx. 10 mm
  • with a surface free of scratches
  • under conditions of no distance (metal-to-metal)
  • during pulling in a direction perpendicular to the plane
  • in temp. approx. 20°C

Key elements affecting lifting force

During everyday use, the actual holding force results from a number of factors, presented from the most important:
  • Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Load vector – maximum parameter is available only during perpendicular pulling. The force required to slide of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
  • Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Steel type – low-carbon steel attracts best. Alloy steels decrease magnetic properties and lifting capacity.
  • Surface condition – ground elements ensure maximum contact, which increases force. Uneven metal reduce efficiency.
  • Thermal factor – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was determined with the use of a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate reduces the load capacity.

Warnings
Combustion hazard

Powder created during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Keep away from computers

Do not bring magnets near a purse, computer, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.

Do not give to children

NdFeB magnets are not toys. Swallowing several magnets may result in them attracting across intestines, which constitutes a severe health hazard and necessitates urgent medical intervention.

Danger to pacemakers

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

Risk of cracking

Neodymium magnets are ceramic materials, which means they are very brittle. Collision of two magnets leads to them cracking into shards.

Impact on smartphones

Note: neodymium magnets produce a field that interferes with precision electronics. Keep a safe distance from your phone, device, and navigation systems.

Finger safety

Danger of trauma: The pulling power is so great that it can cause hematomas, crushing, and even bone fractures. Use thick gloves.

Handling guide

Before use, check safety instructions. Sudden snapping can break the magnet or injure your hand. Think ahead.

Power loss in heat

Monitor thermal conditions. Heating the magnet to high heat will ruin its magnetic structure and strength.

Warning for allergy sufferers

Nickel alert: The nickel-copper-nickel coating contains nickel. If skin irritation occurs, immediately stop working with magnets and wear gloves.

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