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UMP 107x40 [M8+M10] GW F 400 kg / 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 210338

GTIN/EAN: 5906301813972

5.00

Diameter Ø

107 mm [±1 mm]

Height

40 mm [±1 mm]

Weight

2350 g

Load capacity

480.00 kg / 4707.19 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 10 000 Gauss [±5%]

technical specifications »

400.00 ZŁ with VAT / pcs + price for transport

325.20 ZŁ net + 23% VAT / pcs

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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 if you prefer let us know through inquiry form through our site.
Specifications and appearance of a magnet can be reviewed with our our magnetic calculator.

Orders submitted before 14:00 will be dispatched today!

💡 Check why professionals choose Dhit over cheap substitutes

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 107x40 [M8+M10] GW F 400 kg / N38 - search holder

Specification / characteristics - UMP 107x40 [M8+M10] GW F 400 kg / N38 - search holder

properties

properties	values
Cat. no.	210338
GTIN/EAN	5906301813972
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	107 mm [±1 mm]
Height	40 mm [±1 mm]
Weight	2350 g
Load capacity ~ ?	480.00 kg / 4707.19 N
Coating	[NiCuNi] Nickel
Holder Type	2 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 10 000 Gauss [±5%]
Size/Mount Quantity	2xM8/1xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMP 107x40 [M8+M10] GW F 400 kg / 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 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%

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: 210338-2026

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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. 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 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. Single-sided magnets are usually lighter and cheaper but less effective for long throws.

The magnet is glued into a solid steel cup and sealed with epoxy resin, protecting it from water. Avoid throwing the magnet against bridge pillars or hard obstacles. Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.

We offer both standalone holders and ready-made gift sets (depending on the selected option in the store). A full set usually contains: magnet, polypropylene rope with appropriate strength, protective gloves, hook, and carabiner. Using thread glue is crucial to not lose the magnet in silt.

The capacity given in the name (e.g., 480.00 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. Therefore, to pull objects weighing 10kg from the water, a magnet with a capacity of 200-300kg is often needed.

Searches are allowed as long as you do not interfere with archaeological sites or search for weapons. It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.

By choosing the Dhit brand, you receive a higher quality standard and true magnetic power for the same market price.

Consequently, despite the affordable cost, the lifespan of the Dhit product positions it far ahead of the competition.

It is worth remembering that the same mount used by the side hook often has as little as 40 kg of strength instead of the declared 200 kg. Crucially, in the web, it is hard to find videos demonstrating the real side-pull force of competitor products on the side hook.

{By choosing Dhit, you bet on a local market leader that knows the conditions of local rivers and lakes. Instead of risking with unknown goods, stick with proven gear that cares about the happiness of every user.

Pros as well as cons of Nd₂Fe₁₄B magnets.

Advantages

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

They have stable power, and over more than 10 years their attraction force decreases symbolically – ~1% (according to theory),
Neodymium magnets are characterized by extremely resistant to loss of magnetic properties caused by external field sources,
Thanks to the elegant finish, the surface of nickel, gold, or silver gives an visually attractive appearance,
Magnets have excellent magnetic induction on the active area,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures approaching 230°C and above...
Possibility of detailed modeling and modifying to precise needs,
Significant place in modern technologies – they are utilized in computer drives, brushless drives, advanced medical instruments, and complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which allows their use in compact constructions

Disadvantages

Drawbacks and weaknesses of neodymium magnets: tips and applications.

At very strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
NdFeB magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
Limited ability of creating threads in the magnet and complicated shapes - recommended is casing - magnet mounting.
Potential hazard resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, tiny parts of these magnets can be problematic in diagnostics medical after entering the body.
With budget limitations the cost of neodymium magnets is a challenge,

Lifting parameters

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

The lifting capacity listed is a measurement result conducted under the following configuration:

with the contact of a yoke made of low-carbon steel, ensuring full magnetic saturation
whose thickness reaches at least 10 mm
with a surface free of scratches
without the slightest insulating layer between the magnet and steel
during pulling in a direction vertical to the plane
at standard ambient temperature

Lifting capacity in practice – influencing factors

Effective lifting capacity is affected by specific conditions, such as (from priority):

Distance – existence of foreign body (rust, tape, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Metal type – not every steel attracts identically. High carbon content weaken the interaction with the magnet.
Plate texture – ground elements ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
Temperature influence – high temperature weakens magnetic field. Too high temperature can permanently damage the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate lowers the load capacity.

Warnings

Swallowing risk

Always keep magnets out of reach of children. Ingestion danger is high, and the consequences of magnets connecting inside the body are tragic.

Machining danger

Powder produced during cutting of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Pacemakers

Patients with a pacemaker have to keep an safe separation from magnets. The magnetic field can interfere with the functioning of the life-saving device.

Do not overheat magnets

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.

Safe distance

Device Safety: Strong magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Do not underestimate power

Before use, read the rules. Sudden snapping can break the magnet or hurt your hand. Think ahead.

Crushing risk

Risk of injury: The pulling power is so immense that it can cause blood blisters, crushing, and even bone fractures. Use thick gloves.

GPS Danger

Be aware: neodymium magnets produce a field that interferes with precision electronics. Keep a safe distance from your mobile, tablet, and navigation systems.

Avoid contact if allergic

Some people have a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching can result in a rash. It is best to use safety gloves.

Shattering risk

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets will cause them breaking into shards.

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

UMP 107x40 [M8+M10] GW F 400 kg / N38 - search holder

Technical details - UMP 107x40 [M8+M10] GW F 400 kg / N38 - search holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Material specification

Environmental data

Pulling force

Magnetic Induction

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Pros as well as cons of Nd2Fe14B magnets.

Advantages

Disadvantages

Lifting parameters

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

Lifting capacity in practice – influencing factors

Warnings

Swallowing risk

Machining danger

Pacemakers

Do not overheat magnets

Safe distance

Do not underestimate power

Crushing risk

GPS Danger

Avoid contact if allergic

Shattering risk

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Pros as well as cons of Nd₂Fe₁₄B magnets.