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

search holder

Catalog no 210491

GTIN/EAN: 5906301814153

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

see properties »

325.20 zł net / pcs

400.00 zł with VAT (23% VAT) / pcs

price for transport

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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.

Order by 14:00 and we’ll ship today!

💡 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!

Product card - 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
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 specification and ecology

Material specification

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
Measurement Calculator

Magnet pull force

Field Strength

Insert a value into any field, to see the remaining fields change in real-time.

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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°.
This construction protects the brittle neodymium from direct impact against stones and the bottom. 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.
Check the product title and description to see if you are buying just the magnet or the XL set. 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.
It is a technical parameter defining perpendicular break force, not the weight of an object in water. 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). 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 buy a premium mount that will serve you for many seasons than budget alternatives.
Most magnets on the market have weak shells that crack during the first hard impact against concrete or rocks.
Many sellers employ a tactic by advertising the power tested only on the top hook. Crucially, in the web, there are virtually no videos testing the actual strength of other brands on the side hook.
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

Besides their immense pulling force, neodymium magnets offer the following advantages:
  • They have stable power, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
  • Magnets very well resist against demagnetization caused by ambient magnetic noise,
  • The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • They show high magnetic induction at the operating surface, which improves attraction properties,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Possibility of individual shaping as well as optimizing to defined needs,
  • Universal use in future technologies – they are utilized in HDD drives, brushless drives, advanced medical instruments, as well as industrial machines.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Weaknesses

Characteristics of disadvantages of neodymium magnets and ways of using them
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • Do not exceed this material temperature limit: 60°C. Overheating may permanently weaken the magnet.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • Limited possibility of making threads in the magnet and complex shapes - preferred is a housing - mounting mechanism.
  • Health risk to health – tiny shards of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these devices can disrupt the diagnostic process medical in case of swallowing.
  • Due to complex production process, their price is higher than average,

Lifting parameters

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

The declared magnet strength concerns the limit force, measured under ideal test conditions, specifically:
  • with the application of a yoke made of low-carbon steel, guaranteeing maximum field concentration
  • whose thickness equals approx. 10 mm
  • with an polished contact surface
  • without the slightest air gap between the magnet and steel
  • under vertical force vector (90-degree angle)
  • in temp. approx. 20°C

Practical aspects of lifting capacity – factors

Real force impacted by working environment parameters, such as (from priority):
  • Clearance – existence of any layer (rust, dirt, gap) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Direction of force – maximum parameter is reached only during pulling at a 90° angle. The shear force of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Steel thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be wasted to the other side.
  • Material composition – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
  • Surface quality – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Roughness creates an air distance.
  • Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity was measured using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.

H&S for magnets
Heat warning

Control the heat. Heating the magnet to high heat will permanently weaken its properties and pulling force.

Keep away from electronics

A powerful magnetic field interferes with the functioning of compasses in phones and navigation systems. Do not bring magnets near a device to prevent breaking the sensors.

Bone fractures

Large magnets can smash fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.

Machining danger

Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

Warning for heart patients

Patients with a pacemaker must keep an safe separation from magnets. The magnetism can stop the functioning of the implant.

Magnetic media

Do not bring magnets near a purse, laptop, or TV. The magnetism can permanently damage these devices and wipe information from cards.

Choking Hazard

Adult use only. Tiny parts pose a choking risk, leading to intestinal necrosis. Keep away from kids and pets.

Handling rules

Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Magnet fragility

Despite the nickel coating, the material is delicate and not impact-resistant. Do not hit, as the magnet may shatter into hazardous fragments.

Allergy Warning

A percentage of the population experience a contact allergy to nickel, which is the standard coating for NdFeB magnets. Frequent touching may cause an allergic reaction. We suggest use protective gloves.

Important! Details about hazards in the article: Safety of working with magnets.