Product available Ships today (order by 14:00)

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

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

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%]

see parameters »

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

Not sure about your choice?

Call us +48 22 499 98 98 or send us a note through contact form the contact section.
Strength and shape of a neodymium magnet can be verified on our magnetic calculator.

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

💡 Check why professionals choose Dhit over cheap substitutes

Instead of believing fairy tales on YouTube with tests on uncertified equipment, see what really determines your magnet's power:

📏 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!

Product card - 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

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

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%

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: 210447-2026

Magnet Unit Converter

Magnet pull force

Force in kg

lbs

Magnetic Field

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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 330.00 kg, which translates into high effectiveness in water. The choice depends on whether you plan to throw from the shore (double-sided) or from a bridge (single-sided).

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. Single-sided magnets are usually lighter and cheaper but less effective for long throws.

This construction protects the brittle neodymium from direct impact against stones and the bottom. Despite solid construction, neodymium is a brittle material and can chip upon very strong impact (e.g., against concrete). 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., 330.00 kg) is the maximum value measured in laboratory conditions. 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.

Possessing and using a neodymium magnet to clean the bottom is generally legal, provided you are not searching for artifacts protected by law. We recommend familiarizing yourself with current local regulations and heritage protection laws.

By choosing Dhit GOLD mounts, you get a product of a significantly higher standard and true magnetic power for the same market price.

The unique way of gluing and seating the magnet in the protective cup builds a unified structure that dampens shocks while working on rough surfaces.

Many sellers employ a tactic by promoting the power tested exclusively on the vertical mount. The Dhit brand focuses on full transparency by stating the actual capabilities of the magnet, so you avoid disappointment during treasure hunting.

{By choosing GOLD mounts, you bet on Polish engineering that knows the specifics of local rivers and lakes. Every product is checked before shipping, which ensures that you the set will be of the defect-free.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Benefits

Apart from their notable power, neodymium magnets have these key benefits:

They retain attractive force for nearly ten years – the loss is just ~1% (based on simulations),
They possess excellent resistance to weakening of magnetic properties due to external fields,
A magnet with a smooth gold surface has better aesthetics,
Neodymium magnets generate maximum magnetic induction on a contact point, which ensures high operational effectiveness,
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...
Thanks to modularity in designing and the ability to adapt to specific needs,
Fundamental importance in advanced technology sectors – they are commonly used in mass storage devices, electric motors, advanced medical instruments, and modern systems.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which allows their use in small systems

Weaknesses

Disadvantages of neodymium magnets:

To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
We suggest casing - magnetic holder, due to difficulties in producing threads inside the magnet and complex shapes.
Health risk resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. Additionally, small components of these products are able to be problematic in diagnostics medical after entering the body.
Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what affects it?

Breakaway force was determined for optimal configuration, including:

with the contact of a sheet made of low-carbon steel, ensuring full magnetic saturation
possessing a thickness of min. 10 mm to ensure full flux closure
with an ground contact surface
without the slightest air gap between the magnet and steel
under vertical force direction (90-degree angle)
in neutral thermal conditions

Practical lifting capacity: influencing factors

In practice, the actual holding force depends on several key aspects, listed from crucial:

Clearance – the presence of foreign body (rust, tape, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
Load vector – highest force is available only during perpendicular pulling. The resistance to sliding of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Steel grade – ideal substrate is high-permeability steel. Stainless steels may have worse magnetic properties.
Plate texture – ground elements ensure maximum contact, which improves field saturation. Uneven metal reduce efficiency.
Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

H&S for magnets

Magnet fragility

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Dust explosion hazard

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

Phone sensors

Remember: rare earth magnets generate a field that disrupts precision electronics. Keep a safe distance from your phone, tablet, and GPS.

Nickel allergy

Some people have a contact allergy to nickel, which is the standard coating for NdFeB magnets. Frequent touching can result in a rash. We recommend wear safety gloves.

Pinching danger

Watch your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Electronic devices

Avoid bringing magnets near a purse, laptop, or screen. The magnetism can permanently damage these devices and wipe information from cards.

Handling guide

Use magnets with awareness. Their powerful strength can shock even experienced users. Plan your moves and do not underestimate their force.

This is not a toy

Neodymium magnets are not suitable for play. Swallowing several magnets can lead to them pinching intestinal walls, which poses a direct threat to life and necessitates immediate surgery.

Medical implants

Life threat: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.

Do not overheat magnets

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

Attention! Need more info? Read our article: Why are neodymium magnets dangerous?

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

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

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Ecology and recycling (GPSR)

Magnet pull force

Magnetic Field

Other products

UMGGW 43x6 [M4] GW / N38 - magnetic holder rubber internal thread

UMGW 20x15x7 [M4] GW / N38 - magnetic holder internal thread

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

UMT 29x38 white / N38 - board holder

Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

Weaknesses

Holding force characteristics

Optimal lifting capacity of a neodymium magnet – what affects it?

Practical lifting capacity: influencing factors

H&S for magnets

Magnet fragility

Dust explosion hazard

Phone sensors

Nickel allergy

Pinching danger

Electronic devices

Handling guide

This is not a toy

Medical implants

Do not overheat magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages and disadvantages of Nd₂Fe₁₄B magnets.