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

Product available Ships tomorrow

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%]

product parameters »

245.00 ZŁ with VAT / pcs + price for transport

199.19 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

199.19 ZŁ

245.00 ZŁ

price from 10 pcs

187.24 ZŁ

230.30 ZŁ

price from 15 pcs

175.29 ZŁ

215.60 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Want to negotiate?

Give us a call +48 22 499 98 98 or send us a note via contact form the contact form page.
Parameters and form of magnetic components can be reviewed using our online calculation tool.

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!

Technical data of the product - 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 and environmental data

Elemental analysis

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: 210452-2026

Quick Unit Converter

Pulling force

Kilograms (kg)

Force in lbs

Magnetic Induction

Simply populate one field, to let the converter compute the rest instantly.

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For underwater searches, we recommend specialized holders from the GOLD series, designed for working in difficult conditions. It is equipment that can handle pulling heavy and silted objects from the river bottom. 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. 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%.

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. 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. 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.

Unlike many market offers, Dhit does not cut corners on components, which translates into a better results during every trip to the water.

Consequently, despite the market price, the lifespan of the Dhit product positions it far ahead of the competition.

It is worth remembering that the same magnet pulled by the side hook can actually show as little as 40 kg of power instead of the declared 200 kg. Interestingly, in the entire internet, it is hard to find recordings demonstrating the actual strength of other brands on the lateral attachment.

{By choosing Dhit, you support a local market leader that knows the conditions of local rivers and lakes. Every mount is checked before shipping, which guarantees that you receive equipment of the defect-free.

Pros as well as cons of neodymium magnets.

Pros

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They retain attractive force for around 10 years – the drop is just ~1% (based on simulations),
They are extremely resistant to demagnetization induced by external disturbances,
In other words, due to the shiny finish of gold, the element is aesthetically pleasing,
They show high magnetic induction at the operating surface, which improves attraction properties,
Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to flexibility in shaping and the ability to customize to unusual requirements,
Significant place in modern technologies – they find application in HDD drives, electric drive systems, medical devices, and modern systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in small systems

Cons

Disadvantages of neodymium magnets:

Brittleness is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their 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
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
Due to limitations in producing nuts and complicated shapes in magnets, we propose using cover - magnetic holder.
Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, tiny parts of these products can disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

Information about lifting capacity was defined for the most favorable conditions, taking into account:

on a plate made of mild steel, optimally conducting the magnetic flux
possessing a massiveness of min. 10 mm to ensure full flux closure
with a surface cleaned and smooth
with total lack of distance (without coatings)
for force applied at a right angle (pull-off, not shear)
at standard ambient temperature

Practical aspects of lifting capacity – factors

Real force is influenced by specific conditions, such as (from priority):

Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
Angle of force application – highest force is reached only during perpendicular pulling. The force required to slide of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
Steel grade – ideal substrate is pure iron steel. Stainless steels may generate lower lifting capacity.
Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate decreases the holding force.

H&S for magnets

Fire risk

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

Thermal limits

Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

Phone sensors

Note: neodymium magnets generate a field that disrupts sensitive sensors. Keep a safe distance from your mobile, tablet, and GPS.

Keep away from children

These products are not toys. Swallowing a few magnets may result in them pinching intestinal walls, which constitutes a critical condition and necessitates urgent medical intervention.

Nickel coating and allergies

Some people suffer from a hypersensitivity to nickel, which is the common plating for neodymium magnets. Frequent touching might lead to skin redness. We strongly advise wear safety gloves.

Protective goggles

Despite metallic appearance, the material is delicate and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Medical interference

Warning for patients: Powerful magnets affect electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Caution required

Before use, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Serious injuries

Mind your fingers. Two large magnets will snap together immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Safe distance

Equipment safety: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).

Security! Learn more about risks in the article: Magnet Safety Guide.

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

Technical data of the product - 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

Elemental analysis

Ecology and recycling (GPSR)

Pulling force

Magnetic Induction

Other products

MP 5x2.7/1.2x5 C / N38 - ring magnet

SM 18x100 [2xM5] / N42 - magnetic separator

HH 36x7.5 [M6] / N38 - through hole magnetic holder

MW 45x20 / N38 - cylindrical magnet

Pros as well as cons of neodymium magnets.

Pros

Cons

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

Practical aspects of lifting capacity – factors

H&S for magnets

Fire risk

Thermal limits

Phone sensors

Keep away from children

Nickel coating and allergies

Protective goggles

Medical interference

Caution required

Serious injuries

Safe distance

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C