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

search holder

Catalog no 210490

GTIN/EAN: 5906301814146

5.00
Load capacity 650.00 kg / 6374.32 N
Diameter Ø
94 mm [±1 mm]
Height
40 mm [±1 mm]
Weight
2262 g
Magnetization Direction
↑ axial
Coating
[Epoxy] Epoxy
Magnetic Flux
~ 11 000 Gauss [±5%]

How we measure these parameters — certificates and measurements

technical parameters »

284.55 zł net / pcs

350.00 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

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price from 1 pcs
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price from 5 pcs
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Frequently asked questions

What rope length is best for deeper water?
Choose the length for the site and the retrieval method rather than the magnet's nominal pull rating. Allow for abrasion at the bank and check the rope, knot and attachment point as a complete set.
Where should I buy a fishing magnet, and what should I check?
Look for a product card stating the magnet grade, measured pull force and test conditions. Compare the ratings of the rope and connectors too; a large number in the magnet's name does not describe the capacity of the entire set.
What pull rating is suitable for magnet fishing in a river?
In a river, contact angle, surface condition and water movement affect the grip. All F-series models are double-sided. Compare vertical and side pull for the specific model; double-sided does not mean 360°.
Can I buy a complete starter set for magnet fishing?
Check whether the selected offer includes the magnet, rope and connectors, and whether each component has suitable specifications. Follow local safety rules and use protective equipment appropriate for the site.
Which rope can be paired with a magnet rated at several hundred kilograms?
Check the rated capacity of every component: rope, knot, shackle and eyelet. The weakest component limits the set. F200 GOLD has approximately 250 kg vertical pull and 38 kg side pull. Rope sets normally include a blue rope from a Polish manufacturer, 8 mm in diameter and 25 m long. Diameter alone does not determine rope strength.
How is a fishing magnet different from an ordinary magnetic holder?
Fishing holders provide attachment points for an eyelet and rope. All F-series models have magnets on both faces and both faces attract metal. Check the threads, coating and operating conditions of the specific model.
Will the rope be the first component to fail with a heavy find?
Not necessarily. The knot, shackle, thread or magnetic contact may limit the set first. Compare the ratings of all components and remember that an angled pull can detach the magnet before the rope reaches its rated load.
What should I look for in a shop selling fishing magnets?
Check availability, detailed product specifications, test conditions for pull force and the possibility of buying replacement accessories. Compare the whole set rather than just its advertised maximum pull force.
What does F mean in a model name? Does F200 mean a 200 kg pull rating?
F is a model designation, not a pull rating. Confirmed vertical / side pull values: F200 and F200 GOLD — approximately 250 / 38 kg; F200 PLATINIUM N52 — 310 / approximately 61 kg; new F300 — 330 / 58 kg; old F300 — approximately 360 / 64 kg; F200 GOLD DUAL — approximately 610 / 76–82 kg. The old F600 with a top M12 eyelet and side M10 threads has approximately 650 kg vertical pull. Contact conditions affect the actual grip.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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💡 Check why professionals choose Dhit over cheap substitutes

Don't be fooled by amateur online tests – go for certified quality and specific parameters that guarantee success:

  • 📏 Magnet dimensions and grade – Compare the specifications of the exact model in the technical table. Thickness, material grade and geometry all affect holding force and field reach.
  • 🛡️ Protective coating – Check the coating specified for the product and match it to the working environment. Water, impacts and scratches can shorten the life of an inadequately protected magnet.
  • 🧲 Mounting and force direction – The mounting method affects the actual force of the assembly. Use components intended for the specific model and follow the recommendations on its product page.
  • 🧶 Accessory selection – If the product is used with a rope, shackle or hook, check the load rating of every component. The weakest component determines the safety of the complete assembly.
  • 🚀 Choose using comparable data: Each product page lists the magnet grade, dimensions, coating and measured holding force. Compare models using the same parameters and test conditions.

Invest in solid equipment and enjoy the results!

Detailed specification - 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
Remanence Br ? 14.2-14.7 kGs
Remanence Br ? 1420-1470 mT
Coercivity bHc ? 10.8-12.5 kOe
Coercivity bHc ? 860-995 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 48-53 BH max MGOe
Energy product BHmax ? 380-422 BH max KJ/m
Maximum working temperature ? ≤ 60 °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 310 °C
Curie Temperature TF 590 °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%

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

Force (pull)

Magnetic Induction

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All F-series holders have magnets on both faces and both faces attract metal. Choose by weight and retrieval method. F200 / F200 GOLD: approximately 250 kg vertical pull and 38 kg side pull. F200 PLATINIUM N52: 310 kg vertical pull and approximately 61 kg side pull. The laboratory pull rating is not the weight of any object recoverable from water.
All F models are double-sided. DUAL means two connected F200 holders: approximately 610 kg vertical pull and 76–82 kg side pull. Use a side eyelet for dragging and a top eyelet for vertical retrieval. The new F300 has M10 threads throughout; the old F300 has a top M10 thread and side M8 threads. Double-sided does not mean 360°.
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. 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.
This force applies to perfect adherence with the entire surface to a smooth, clean steel plate with a min. thickness of 20mm. The magnet may slide on round elements (bicycle frame) due to the small contact area. 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. It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.
It is the best value because for the same money, you obtain a premium mount that will last for much longer than budget alternatives.
The unique way of mounting the magnet in the protective cup builds a unified structure that absorbs impacts while fishing on difficult, rocky bottoms.
Many distributors employ a tactic by promoting the power measured only on the top hook. GOLD mounts guarantees full transparency by stating the actual capabilities of the gear, so you can be sure during real field work.
GOLD search mounts are available in several variants for different conditions. Compare the dimensions, mounting points and pull forces in the product cards before choosing a model.

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Apart from their strong magnetism, neodymium magnets have these key benefits:
  • They retain magnetic properties for around ten years – the loss is just ~1% (based on simulations),
  • Magnets perfectly protect themselves against loss of magnetization caused by external fields,
  • A magnet with a smooth gold surface has better aesthetics,
  • Neodymium magnets generate maximum magnetic induction on a their surface, which increases force concentration,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
  • In view of the ability of accurate molding and adaptation to custom requirements, NdFeB magnets can be created in a wide range of geometric configurations, which increases their versatility,
  • Versatile presence in innovative solutions – they are commonly used in HDD drives, electromotive mechanisms, precision medical tools, as well as complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in small systems

Disadvantages

Problematic aspects of neodymium magnets and ways of using them
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a strong case, which not only protects them against impacts but also increases their durability
  • Do not exceed this material temperature limit: 60°C. Overheating may permanently weaken the magnet.
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Limited possibility of producing threads in the magnet and complex shapes - recommended is a housing - magnet mounting.
  • Health risk resulting from small fragments of magnets are risky, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, small components of these products can disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what contributes to it?

The load parameter shown concerns the peak performance, measured under laboratory conditions, specifically:
  • using a plate made of high-permeability steel, acting as a ideal flux conductor
  • with a cross-section no less than 10 mm
  • characterized by smoothness
  • under conditions of ideal adhesion (metal-to-metal)
  • for force applied at a right angle (pull-off, not shear)
  • at room temperature

What influences lifting capacity in practice

Effective lifting capacity impacted by working environment parameters, mainly (from most important):
  • Gap (between the magnet and the plate), because even a tiny clearance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to paint, corrosion or dirt).
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Plate material – mild steel attracts best. Alloy admixtures lower magnetic properties and holding force.
  • Surface finish – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Temperature – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Lifting capacity was assessed using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the holding force is lower. In addition, even a slight gap between the magnet and the plate lowers the lifting capacity.

Safety rules for work with neodymium magnets
Fire risk

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

Nickel allergy

Studies show that the nickel plating (the usual finish) is a strong allergen. For allergy sufferers, refrain from direct skin contact or select coated magnets.

Magnetic interference

Remember: neodymium magnets generate a field that confuses precision electronics. Maintain a separation from your mobile, tablet, and navigation systems.

Do not give to children

NdFeB magnets are not suitable for play. Accidental ingestion of several magnets can lead to them attracting across intestines, which poses a critical condition and necessitates urgent medical intervention.

Caution required

Use magnets with awareness. Their huge power can shock even experienced users. Stay alert and respect their power.

Pacemakers

For implant holders: Strong magnetic fields affect medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.

Beware of splinters

Despite the nickel coating, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

Power loss in heat

Regular neodymium magnets (N-type) lose power when the temperature goes above 80°C. The loss of strength is permanent.

Safe distance

Avoid bringing magnets near a purse, laptop, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Serious injuries

Large magnets can break fingers instantly. Do not put your hand betwixt two attracting surfaces.

Warning! Learn more about hazards in the article: Magnet Safety Guide.