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UMP 94x28 [3xM10] GW F300 GOLD / N38 - search holder

search holder

Catalog no 210447

GTIN/EAN: 5906301814115

5.00

Diameter Ø

94 mm [±1 mm]

Height

28 mm [±1 mm]

Weight

1600 g

Load capacity

330.00 kg / 3236.19 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 8 000 Gauss [±5%]

view specifications »

200.00 ZŁ with VAT / pcs + price for transport

162.60 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety
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Give us a call +48 22 499 98 98 otherwise get in touch through our online form the contact section.
Lifting power as well as form of magnetic components can be checked using our force 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!

Technical - UMP 94x28 [3xM10] GW F300 GOLD / N38 - search holder

Specification / characteristics - UMP 94x28 [3xM10] GW F300 GOLD / N38 - search holder

properties
properties values
Cat. no. 210447
GTIN/EAN 5906301814115
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 28 mm [±1 mm]
Weight 1600 g
Load capacity ~ ? 330.00 kg / 3236.19 N
Coating [NiCuNi] Nickel
Series GOLD
Holder Type 2 sided
Material Type Structural steel S235 (ferrous)
Magnetic Flux ~ 8 000 Gauss [±5%]
Size/Mount Quantity 3xM10
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMP 94x28 [3xM10] GW F300 GOLD / N38 - search holder
properties values units
remenance Br [min. - max.] ? 12.2-12.6 kGs
remenance Br [min. - max.] ? 1220-1260 mT
coercivity bHc ? 10.8-11.5 kOe
coercivity bHc ? 860-915 kA/m
actual internal force iHc ≥ 12 kOe
actual internal force iHc ≥ 955 kA/m
energy density [min. - max.] ? 36-38 BH max MGOe
energy density [min. - max.] ? 287-303 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
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: 210447-2026
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Magnet pull force
Magnetic Field
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It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. Model UMP 94x28 [3xM10] GW F300 GOLD / N38 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. The side eyelet ensures the magnet doesn't stand sideways or "on edge" during pulling. The double-sided version increases search efficiency by 100%.
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. After each fishing trip, we recommend rinsing the magnet with fresh water and drying it.
Check the product title and description to see if you are buying just the magnet or the XL set. A full set usually contains: magnet, polypropylene rope with appropriate strength, protective gloves, hook, and carabiner. 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. Dirt, rust, paint, and algae create a distance that weakens the magnet by even 70-80%. Therefore, to pull objects weighing 10kg from the water, a magnet with a capacity of 200-300kg is often needed.
Possessing and using a neodymium magnet to clean the bottom is generally legal, provided you are not searching for artifacts protected by law. Magnet fishing is an eco-friendly hobby if you clean the river from trash and scrap.
In contrast to other brands, Dhit uses the highest quality components, which translates into a better results during every trip to the water.
As a result, despite the affordable cost, the lifespan of the GOLD mount puts it far ahead of other brands.
It is worth remembering that the same magnet pulled by the lateral point often has as little as a fraction of strength instead of the declared 200 kg. The Dhit brand guarantees full transparency by stating the actual capabilities of the magnet, so you avoid disappointment during real field work.
{By choosing Dhit, you bet on Polish engineering that perfectly understands the conditions of our waters. Every mount is individually inspected before shipping, which guarantees that you receive equipment of the highest quality.

Pros as well as cons of Nd2Fe14B magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (according to literature),
  • Neodymium magnets are remarkably resistant to demagnetization caused by external magnetic fields,
  • A magnet with a smooth nickel surface has better aesthetics,
  • Neodymium magnets create maximum magnetic induction on a contact point, which allows for strong attraction,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
  • Thanks to modularity in shaping and the ability to customize to unusual requirements,
  • Fundamental importance in innovative solutions – they are utilized in computer drives, electric drive systems, medical equipment, as well as industrial machines.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals
  • At strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in producing nuts and complicated shapes in magnets, we propose using casing - magnetic holder.
  • Health risk resulting from small fragments of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. Furthermore, small components of these magnets are able to complicate diagnosis medical in case of swallowing.
  • Due to expensive raw materials, their price exceeds standard values,

Pull force analysis

Best holding force of the magnet in ideal parameters – what it depends on?

The force parameter is a result of laboratory testing conducted under the following configuration:
  • using a base made of mild steel, serving as a magnetic yoke
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • with a surface perfectly flat
  • with total lack of distance (without paint)
  • under perpendicular force vector (90-degree angle)
  • in temp. approx. 20°C

Practical aspects of lifting capacity – factors

Bear in mind that the working load will differ subject to the following factors, in order of importance:
  • Clearance – the presence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Chemical composition of the base – low-carbon steel gives the best results. Higher carbon content lower magnetic properties and holding force.
  • Base smoothness – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
  • Temperature – heating the magnet causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the load capacity is reduced by as much as 75%. Additionally, even a small distance between the magnet and the plate reduces the lifting capacity.

Safe handling of neodymium magnets
Dust is flammable

Combustion risk: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.

Permanent damage

Do not overheat. NdFeB magnets are susceptible to heat. If you need resistance above 80°C, look for HT versions (H, SH, UH).

Do not give to children

Absolutely keep magnets away from children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are fatal.

Fragile material

Watch out for shards. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.

Metal Allergy

Medical facts indicate that nickel (the usual finish) is a potent allergen. For allergy sufferers, avoid touching magnets with bare hands and opt for encased magnets.

Phone sensors

Be aware: rare earth magnets produce a field that interferes with sensitive sensors. Keep a separation from your mobile, device, and GPS.

Handling guide

Exercise caution. Rare earth magnets attract from a distance and connect with huge force, often quicker than you can move away.

Physical harm

Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

Magnetic media

Powerful magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Keep a distance of at least 10 cm.

Warning for heart patients

For implant holders: Powerful magnets disrupt electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.

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