Product available Ships today (order by 14:00)

UMP 107x40 [M8+M10] GW F400 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 210384

GTIN/EAN: 5906301814030

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

~ 8 000 Gauss [±5%]

technical specifications »

450.00 ZŁ with VAT / pcs + price for transport

365.85 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

365.85 ZŁ

450.00 ZŁ

price from 5 pcs

343.90 ZŁ

423.00 ZŁ

price from 10 pcs

321.95 ZŁ

396.00 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Call us now +48 888 99 98 98 if you prefer let us know via inquiry form our website.
Weight and shape of magnetic components can be checked on our force calculator.

Order by 14:00 and we’ll ship 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 of the product - UMP 107x40 [M8+M10] GW F400 Lina / N38 - search holder

Specification / characteristics - UMP 107x40 [M8+M10] GW F400 Lina / N38 - search holder

properties

properties	values
Cat. no.	210384
GTIN/EAN	5906301814030
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	~ 8 000 Gauss [±5%]
Rope Length	25 m
Rope Capacity	~ 1595 kg
Rope Diameter	Ø 8 mm
Gloves	1 pair
Size/Mount Quantity	1xM8/2xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMP 107x40 [M8+M10] GW F400 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

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: 210384-2026

Measurement Calculator

Magnet pull force

Newtons (N)

lbs

Magnetic Induction

Induction (Gs)

Tesla (T)

Just complete a single box, to let the calculator calculate everything else instantly.

View also deals

Product available Ships today (order by 14:00)

UI 45x13x6 [Z323] / N38 - badge holder

2.40 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 50x50x10 / N38 - lamellar magnet

42.88 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MP 16x12x2 / N38 - ring magnet

1.304 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 12x4 / N38 - cylindrical magnet

1.353 ZŁ brutto / pcs

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).

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%.

The magnet is glued into a solid steel cup and sealed with epoxy resin, protecting it from water. The housing significantly increases lifespan but does not make the magnet completely indestructible. 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. 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.

It is a technical parameter defining perpendicular break force, not the weight of an object in water. 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. It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.

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

Dhit GOLD mounts feature a robust construction that provides a true shield for the brittle neodymium.

It is worth remembering that the same magnet used by the lateral point often has only a fraction of power instead of the declared 200 kg. The Dhit brand focuses on honest data by stating the real parameters of the magnet, so you can be sure during real field work.

{In contrast to anonymous sellers, Dhit provides full support and instant warranty help, which is crucial after the purchase. Instead of risking with random brands, stick with proven gear that ensures the happiness of searcher.

Advantages and disadvantages of rare earth magnets.

Strengths

Besides their high retention, neodymium magnets are valued for these benefits:

They do not lose magnetism, even during around 10 years – the drop in power is only ~1% (according to tests),
They have excellent resistance to magnetism drop when exposed to external fields,
In other words, due to the metallic surface of nickel, the element gains a professional look,
Magnets possess huge magnetic induction on the active area,
Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
Possibility of precise modeling as well as adjusting to precise needs,
Key role in future technologies – they are utilized in data components, electric drive systems, medical equipment, also technologically advanced constructions.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Limitations

Disadvantages of NdFeB magnets:

At very strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
Limited ability of creating nuts in the magnet and complex shapes - recommended is casing - magnet mounting.
Potential hazard related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these devices are able to be problematic in diagnostics medical in case of swallowing.
With budget limitations the cost of neodymium magnets is economically unviable,

Lifting parameters

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

Magnet power was defined for the most favorable conditions, including:

with the use of a sheet made of special test steel, guaranteeing full magnetic saturation
possessing a thickness of minimum 10 mm to ensure full flux closure
characterized by even structure
under conditions of gap-free contact (metal-to-metal)
under perpendicular force vector (90-degree angle)
at ambient temperature room level

Impact of factors on magnetic holding capacity in practice

In real-world applications, the actual holding force is determined by several key aspects, listed from most significant:

Clearance – the presence of any layer (rust, dirt, air) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
Direction of force – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is usually many times smaller (approx. 1/5 of the lifting capacity).
Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
Steel grade – ideal substrate is high-permeability steel. Stainless steels may generate lower lifting capacity.
Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Rough surfaces weaken the grip.
Temperature influence – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity was determined by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet and the plate decreases the holding force.

Precautions when working with neodymium magnets

Serious injuries

Big blocks can crush fingers in a fraction of a second. Never put your hand betwixt two strong magnets.

Medical interference

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

Thermal limits

Avoid heat. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Metal Allergy

Certain individuals suffer from a sensitization to Ni, which is the standard coating for neodymium magnets. Prolonged contact can result in an allergic reaction. We suggest use safety gloves.

Safe distance

Do not bring magnets near a purse, computer, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.

Risk of cracking

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

Choking Hazard

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

Caution required

Handle with care. Rare earth magnets attract from a long distance and connect with massive power, often faster than you can move away.

GPS and phone interference

An intense magnetic field negatively affects the functioning of magnetometers in smartphones and navigation systems. Do not bring magnets near a smartphone to prevent breaking the sensors.

Do not drill into magnets

Machining of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.

Danger! Looking for details? Check our post: Are neodymium magnets dangerous?

UMP 107x40 [M8+M10] GW F400 Lina / N38 - search holder

Technical of the product - UMP 107x40 [M8+M10] GW F400 Lina / 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 Induction

View also deals

UI 45x13x6 [Z323] / N38 - badge holder

MPL 50x50x10 / N38 - lamellar magnet

MP 16x12x2 / N38 - ring magnet

MW 12x4 / N38 - cylindrical magnet

Advantages and disadvantages of rare earth magnets.

Strengths

Limitations

Lifting parameters

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

Impact of factors on magnetic holding capacity in practice

Precautions when working with neodymium magnets

Serious injuries

Medical interference

Thermal limits

Metal Allergy

Safe distance

Risk of cracking

Choking Hazard

Caution required

GPS and phone interference

Do not drill into magnets

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C