Product available Ships tomorrow

UMP 135x40 [M10+M12] GW F600 Lina / 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 210385

GTIN/EAN: 5906301814047

5.00

Diameter Ø

135 mm [±1 mm]

Height

40 mm [±1 mm]

Weight

4300 g

Load capacity

680.00 kg / 6668.52 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 10 000 Gauss [±5%]

product parameters »

649.99 ZŁ with VAT / pcs + price for transport

528.45 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 1 pcs

528.45 ZŁ

649.99 ZŁ

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465.04 ZŁ

571.99 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Give us a call +48 888 99 98 98 if you prefer contact us by means of inquiry form the contact section.
Parameters as well as structure of a magnet can be estimated with 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?

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 - UMP 135x40 [M10+M12] GW F600 Lina / N38 - search holder

Specification / characteristics - UMP 135x40 [M10+M12] GW F600 Lina / N38 - search holder

properties

properties	values
Cat. no.	210385
GTIN/EAN	5906301814047
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	135 mm [±1 mm]
Height	40 mm [±1 mm]
Weight	4300 g
Load capacity ~ ?	680.00 kg / 6668.52 N
Coating	[NiCuNi] Nickel
Holder Type	2 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 10 000 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 N38

Specification / characteristics UMP 135x40 [M10+M12] GW F600 Lina / 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

Technical and environmental data

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: 210385-2026

Magnet Unit Converter

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106.96 ZŁ brutto / pcs

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MPL 30x20x20 / N38 - lamellar magnet

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It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. 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).

The double-sided model attracts from above and below, increasing the chance of hooking a find. Top mounting works well when fishing from a bridge, pier, or well (vertical technique). 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). 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. Using thread glue is crucial to not lose the magnet in silt.

The capacity given in the name (e.g., 680.00 kg) is the maximum value measured in laboratory conditions. In a river, objects are often rusty, silted, or irregular in shape (e.g., pipes), which drastically reduces grip strength. A large power reserve is essential in real search conditions.

Searches are allowed as long as you do not interfere with archaeological sites or search for weapons. We recommend familiarizing yourself with current local regulations and heritage protection laws.

It is the best value because for the same money, you obtain a premium mount that will serve you for many seasons than budget alternatives.

As a result, despite the affordable cost, the lifespan of the Dhit product positions it a step above other brands.

It is worth remembering that the identical magnet used by the lateral point can actually show only 40 kg of strength instead of the declared 200 kg. The Dhit brand focuses on full transparency by stating the real parameters of the magnet, so you can be sure during treasure hunting.

{In contrast to anonymous sellers, Dhit provides full support and instant warranty help, which is crucial after the transaction. Every product is individually inspected before delivery, which guarantees that you the set will be of the highest quality.

Advantages and disadvantages of rare earth magnets.

Advantages

Besides their exceptional strength, neodymium magnets offer the following advantages:

They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (based on calculations),
Neodymium magnets are characterized by highly resistant to loss of magnetic properties caused by external field sources,
A magnet with a shiny gold surface has an effective appearance,
They show high magnetic induction at the operating surface, which improves attraction properties,
Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
Thanks to the ability of precise shaping and customization to unique requirements, NdFeB magnets can be created in a variety of geometric configurations, which increases their versatility,
Key role in electronics industry – they are used in mass storage devices, electric drive systems, advanced medical instruments, and industrial machines.
Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of NdFeB magnets:

To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
Neodymium magnets lose their strength 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 corrode. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
We recommend cover - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated shapes.
Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these devices can be problematic in diagnostics medical after entering the body.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Highest magnetic holding force – what contributes to it?

The specified lifting capacity refers to the maximum value, measured under laboratory conditions, namely:

with the contact of a sheet made of special test steel, ensuring maximum field concentration
with a thickness minimum 10 mm
with a plane free of scratches
without any air gap between the magnet and steel
for force applied at a right angle (in the magnet axis)
at temperature room level

Determinants of lifting force in real conditions

Effective lifting capacity is influenced by specific conditions, mainly (from most important):

Gap between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Plate thickness – insufficiently thick sheet causes magnetic saturation, causing part of the power to be escaped to the other side.
Steel type – mild steel gives the best results. Alloy steels reduce magnetic properties and holding force.
Surface condition – ground elements ensure maximum contact, which increases force. Rough surfaces weaken the grip.
Thermal environment – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under perpendicular forces, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a slight gap between the magnet and the plate decreases the load capacity.

H&S for magnets

Protective goggles

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets leads to them breaking into shards.

Combustion hazard

Mechanical processing of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.

Heat warning

Standard neodymium magnets (grade N) lose power when the temperature surpasses 80°C. Damage is permanent.

Medical interference

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

Electronic devices

Avoid bringing magnets near a wallet, computer, or TV. The magnetism can permanently damage these devices and erase data from cards.

Pinching danger

Big blocks can break fingers instantly. Do not put your hand between two strong magnets.

Do not give to children

Absolutely keep magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are life-threatening.

Magnetic interference

Note: neodymium magnets generate a field that confuses precision electronics. Keep a separation from your phone, device, and navigation systems.

Conscious usage

Before starting, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.

Metal Allergy

A percentage of the population experience a hypersensitivity to nickel, which is the common plating for neodymium magnets. Prolonged contact can result in dermatitis. We suggest wear protective gloves.

Danger! Details about risks in the article: Magnet Safety Guide.

UMP 135x40 [M10+M12] GW F600 Lina / N38 - search holder

Technical - UMP 135x40 [M10+M12] GW F600 Lina / N38 - search holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Environmental data

Force (pull)

Magnetic Field

Other products

MW 30x5 / N38 - cylindrical magnet

SM 18x275 [2xM5] / N42 - magnetic separator

MW 50x20 / N38 - cylindrical magnet

MPL 30x20x20 / N38 - lamellar magnet

Advantages and disadvantages of rare earth magnets.

Advantages

Cons

Holding force characteristics

Highest magnetic holding force – what contributes to it?

Determinants of lifting force in real conditions

H&S for magnets

Protective goggles

Combustion hazard

Heat warning

Medical interference

Electronic devices

Pinching danger

Do not give to children

Magnetic interference

Conscious usage

Metal Allergy

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C