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

Product available Ships in 2 days

UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 - 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 210452

GTIN/EAN: 5906301814122

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%]

technical details »

245.00 ZŁ with VAT / pcs + price for transport

199.19 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Do you have questions?

Call us now +48 888 99 98 98 if you prefer get in touch by means of contact form our website.
Force as well as shape of a magnet can be tested on 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!

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

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

properties

properties	values
Cat. no.	210452
GTIN/EAN	5906301814122
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	2 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 20 000 Gauss [±5%]
Size/Mount Quantity	4xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N42

Specification / characteristics UMP 75x25 [M10x3] GW F200 GOLD DUAL / 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

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

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%

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: 210452-2026

Measurement Calculator

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For underwater searches, we recommend specialized holders from the GOLD series, designed for working in difficult conditions. Model UMP 75x25 [M10x3] GW F200 GOLD DUAL / N42 offers an optimal weight-to-pull force ratio, which is important for repeated throwing. The choice depends on whether you plan to throw from the shore (double-sided) or from a bridge (single-sided).

The 2xTwo-Side version is more versatile, allowing the eyelet to be mounted in two positions. Side mounting is ideal for throwing from the shore, as the magnet drags flat along the bottom. The double-sided version increases search efficiency by 100%.

Our holders have a thick steel housing covered with an anti-corrosion layer (chrome, nickel, zinc). 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.

Check the product title and description to see if you are buying just the magnet or the XL set. In the package, you will find everything needed: strong rope (e.g., 20m), gloves, and hardware. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.

The capacity given in the name (e.g., 601.00 kg) is the maximum value measured in laboratory conditions. The magnet may slide on round elements (bicycle frame) due to the small contact area. A large power reserve is essential in real search conditions.

If you find a dangerous object (unexploded ordnance) or an antique, you have a legal obligation to report it to appropriate services (Police, conservator). Magnet fishing is an eco-friendly hobby if you clean the river from trash and scrap.

Unlike many market offers, Dhit uses the highest quality components, which translates into a better results during treasure hunting.

The unique way of gluing and seating the magnet in the protective cup creates a solid structure that absorbs impacts while fishing on difficult, rocky bottoms.

You should know that the same mount used by the lateral point often has only 40 kg of power instead of the declared 200 kg. Interestingly, in the entire internet, there are virtually no videos testing the actual strength of other brands on the side hook.

{By choosing GOLD mounts, you bet on a local market leader that knows the specifics of our waters. Instead of risking with unknown goods, stick with proven gear that cares about the satisfaction of searcher.

Strengths as well as weaknesses of neodymium magnets.

Benefits

Besides their immense magnetic power, neodymium magnets offer the following advantages:

They virtually do not lose power, because even after ten years the performance loss is only ~1% (based on calculations),
They possess excellent resistance to magnetic field loss when exposed to opposing magnetic fields,
A magnet with a shiny gold surface has an effective appearance,
Magnets are distinguished by maximum magnetic induction on the active area,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures approaching 230°C and above...
Possibility of detailed modeling and optimizing to complex requirements,
Huge importance in innovative solutions – they are commonly used in HDD drives, motor assemblies, advanced medical instruments, as well as modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Limitations

Drawbacks and weaknesses of neodymium magnets and ways of using them

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
Neodymium magnets decrease their force 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
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in creating threads and complicated forms in magnets, we recommend using a housing - magnetic holder.
Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these products can complicate diagnosis medical after entering the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

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

Breakaway force is the result of a measurement for the most favorable conditions, including:

with the application of a yoke made of special test steel, guaranteeing full magnetic saturation
with a cross-section no less than 10 mm
characterized by smoothness
with zero gap (without paint)
for force acting at a right angle (in the magnet axis)
at standard ambient temperature

What influences lifting capacity in practice

In real-world applications, the real power is determined by a number of factors, ranked from most significant:

Air gap (betwixt the magnet and the plate), because even a tiny clearance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to paint, rust or debris).
Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
Material type – ideal substrate is pure iron steel. Stainless steels may attract less.
Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
Operating temperature – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate reduces the lifting capacity.

Safety rules for work with neodymium magnets

Swallowing risk

Neodymium magnets are not toys. Accidental ingestion of several magnets may result in them connecting inside the digestive tract, which constitutes a direct threat to life and requires urgent medical intervention.

Electronic devices

Do not bring magnets near a purse, laptop, or TV. The magnetic field can destroy these devices and wipe information from cards.

Magnetic interference

A strong magnetic field disrupts the operation of compasses in phones and GPS navigation. Do not bring magnets near a smartphone to avoid damaging the sensors.

Nickel coating and allergies

Studies show that nickel (standard magnet coating) is a common allergen. If your skin reacts to metals, refrain from touching magnets with bare hands or choose coated magnets.

Magnets are brittle

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

Bone fractures

Big blocks can crush fingers instantly. Do not put your hand betwixt two strong magnets.

Do not overheat magnets

Standard neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. This process is irreversible.

Conscious usage

Handle magnets with awareness. Their powerful strength can shock even experienced users. Stay alert and respect their power.

Pacemakers

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

Machining danger

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

Security! Looking for details? Read our article: Are neodymium magnets dangerous?

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

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

Magnetic properties of material N42

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Environmental data

Force (pull)

Field Strength

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

SM 32x425 [2xM8] / N52 - magnetic separator

Strengths as well as weaknesses of neodymium magnets.

Benefits

Limitations

Pull force analysis

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

What influences lifting capacity in practice

Safety rules for work with neodymium magnets

Swallowing risk

Electronic devices

Magnetic interference

Nickel coating and allergies

Magnets are brittle

Bone fractures

Do not overheat magnets

Conscious usage

Pacemakers

Machining danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C