← previous
next →
Product available Ships in 3 days

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%]

check properties »

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
Can't decide what to choose?

Contact us by phone +48 22 499 98 98 otherwise let us know using inquiry form the contact page.
Specifications and appearance of neodymium magnets can be analyzed 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?

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 Double version offers two attachment points, giving more flexibility. You can mount the eyelet on the side for shore casting or on top for bridge fishing. Standard single holders are mainly intended for vertical dipping.
Selecting the Dual version offers several advantages:
Larger contact area: More space to attract objects.
Greater adaptability: Adapt to any fishing condition.
Greater combined force: Theoretically, it offers double the attracting area.
Better durability: Lower risk of mechanical damage.
Great price-performance ratio: An economical choice for serious magnet fishers.

For maximum efficiency, the Dual version is highly recommended.

Technical - 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
Engineering data and GPSR
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%
Environmental data
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
Magnet pull force
Magnetic Induction
Input your value in a single slot to see the conversion in the other fields immediately.

View also products

MPL 15x2x30 / N38 - lamellar magnet
Product available Ships in 3 days

MPL 15x2x30 / N38 - lamellar magnet

4.75 ZŁ brutto / pcs
MW 7x1.5 / N38 - cylindrical magnet
Product available Ships in 3 days

MW 7x1.5 / N38 - cylindrical magnet

0.369 ZŁ brutto / pcs
SM 19x225 [2xM6] / N50 - magnetic separator
Product available Ships in 3 days

SM 19x225 [2xM6] / N50 - magnetic separator

528.90 ZŁ brutto / pcs
KM HF - 34,5 kg - magnetic bracket
Product available Ships in 3 days

KM HF - 34,5 kg - magnetic bracket

34.44 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 601.00 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.
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). Avoid throwing the magnet against bridge pillars or hard obstacles. 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. 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.
Possessing and using a neodymium magnet to clean the bottom is generally legal, provided you are not searching for artifacts protected by law. It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.
Unlike other brands, 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 first hard impact against concrete or rocks.
You should know that the same magnet pulled by the lateral point often has as little as a fraction of strength instead of the declared 200 kg. GOLD mounts focuses on full transparency by stating the real parameters of the gear, so you avoid disappointment during real field work.
{In contrast to anonymous sellers, Dhit provides expert advice and real service assistance, which gives peace of mind after the purchase. Every product is individually inspected before delivery, which ensures that you receive equipment of the highest quality.

Pros and cons of Nd2Fe14B magnets.

Pros

Besides their high retention, neodymium magnets are valued for these benefits:
  • They retain magnetic properties for nearly 10 years – the drop is just ~1% (according to analyses),
  • Neodymium magnets are characterized by highly resistant to magnetic field loss caused by external magnetic fields,
  • A magnet with a metallic gold surface is more attractive,
  • The surface of neodymium magnets generates a concentrated magnetic field – this is one of their assets,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of exact forming and adapting to complex requirements,
  • Universal use in advanced technology sectors – they find application in data components, motor assemblies, precision medical tools, as well as technologically advanced constructions.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 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 resistant to moisture, in case of application outdoors
  • We recommend a housing - magnetic holder, due to difficulties in producing threads inside the magnet and complex forms.
  • Health risk related to microscopic parts of magnets can be dangerous, if swallowed, which becomes key 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 when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Highest magnetic holding force – what affects it?

The declared magnet strength refers to the limit force, measured under laboratory conditions, namely:
  • on a block made of mild steel, optimally conducting the magnetic flux
  • whose transverse dimension equals approx. 10 mm
  • characterized by lack of roughness
  • with total lack of distance (no paint)
  • for force applied at a right angle (in the magnet axis)
  • at ambient temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

Bear in mind that the magnet holding may be lower subject to the following factors, starting with the most relevant:
  • Distance (betwixt the magnet and the plate), as even a very small clearance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to paint, rust or debris).
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
  • Chemical composition of the base – mild steel gives the best results. Higher carbon content lower magnetic permeability and holding force.
  • Surface structure – the more even the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
  • Temperature – temperature increase results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a small distance between the magnet’s surface and the plate lowers the load capacity.

H&S for magnets
Data carriers

Intense magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Stay away of min. 10 cm.

Immense force

Exercise caution. Rare earth magnets act from a distance and connect with massive power, often faster than you can move away.

Dust is flammable

Dust generated during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Swallowing risk

Strictly keep magnets out of reach of children. Ingestion danger is high, and the effects of magnets connecting inside the body are tragic.

Bone fractures

Big blocks can crush fingers instantly. Under no circumstances put your hand betwixt two strong magnets.

Keep away from electronics

A powerful magnetic field disrupts the operation of magnetometers in smartphones and GPS navigation. Keep magnets near a device to avoid damaging the sensors.

Beware of splinters

Despite metallic appearance, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Nickel coating and allergies

Medical facts indicate that nickel (the usual finish) is a strong allergen. If you have an allergy, prevent direct skin contact or opt for encased magnets.

Heat sensitivity

Monitor thermal conditions. Exposing the magnet to high heat will destroy its magnetic structure and pulling force.

Danger to pacemakers

Warning for patients: Strong magnetic fields affect electronics. Keep at least 30 cm distance or ask another person to handle the magnets.

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