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UMP 65x45 [M8]x2 GW F230+ 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 210386

GTIN/EAN: 5906301814054

5.00

Diameter Ø

65 mm [±1 mm]

Height

45 mm [±1 mm]

Weight

1170 g

Load capacity

230.00 kg / 2255.53 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 6 000 Gauss [±5%]

check technical data »

180.00 ZŁ with VAT / pcs + price for transport

146.34 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Contact us by phone +48 888 99 98 98 alternatively get in touch by means of contact form the contact form page.
Parameters as well as form of a magnet can be calculated with 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 details - UMP 65x45 [M8]x2 GW F230+ Lina / N38 - search holder

Specification / characteristics - UMP 65x45 [M8]x2 GW F230+ Lina / N38 - search holder

properties

properties	values
Cat. no.	210386
GTIN/EAN	5906301814054
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	65 mm [±1 mm]
Height	45 mm [±1 mm]
Weight	1170 g
Load capacity ~ ?	230.00 kg / 2255.53 N
Coating	[NiCuNi] Nickel
Holder Type	2 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 6 000 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 65x45 [M8]x2 GW F230+ 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 specification and ecology

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%

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: 210386-2026

Measurement Calculator

Pulling force

Force in kg

Newtons (N)

Pounds (lbs)

Magnetic Induction

Tesla (T)

Input your value in just one slot to get results in the other fields right away.

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It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. Model UMP 65x45 [M8]x2 GW F230+ Lina / N38 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).

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. 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. 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.

We offer both standalone holders and ready-made gift sets (depending on the selected option in the store). 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., 230.00 kg) is the maximum value measured in laboratory conditions. 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.

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.

Unlike many market offers, Dhit uses the highest quality materials, which translates into a clear advantage during treasure hunting.

Dhit GOLD mounts utilize heavy-duty, thick-walled steel that acts as a real armor for the brittle neodymium.

Many sellers employ a tactic by promoting the pull force measured only on the top hook. Interestingly, in the entire internet, there are virtually no recordings testing the actual strength of other brands on the lateral attachment.

{By choosing GOLD mounts, you bet on Polish engineering that knows the conditions of our waters. Don't risk it with unknown goods, it is better to choose proven gear that ensures the happiness of searcher.

Strengths and weaknesses of neodymium magnets.

Pros

Apart from their strong magnetism, neodymium magnets have these key benefits:

Their power remains stable, and after approximately 10 years it decreases only by ~1% (theoretically),
They are noted for resistance to demagnetization induced by external magnetic fields,
By covering with a lustrous layer of silver, the element presents an proper look,
Magnetic induction on the top side of the magnet turns out to be extremely intense,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Thanks to freedom in forming and the capacity to modify to client solutions,
Significant place in modern industrial fields – they are used in magnetic memories, drive modules, medical devices, also modern systems.
Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in small systems

Weaknesses

Disadvantages of neodymium magnets:

At very strong impacts they can crack, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
Limited ability of creating nuts in the magnet and complicated shapes - recommended is casing - magnet mounting.
Possible danger related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. It is also worth noting that small components of these products can disrupt the diagnostic process medical after entering the body.
Due to complex production process, their price exceeds standard values,

Holding force characteristics

Maximum holding power of the magnet – what affects it?

The lifting capacity listed is a theoretical maximum value executed under standard conditions:

using a base made of low-carbon steel, functioning as a circuit closing element
with a thickness no less than 10 mm
characterized by smoothness
without the slightest clearance between the magnet and steel
during pulling in a direction vertical to the plane
in neutral thermal conditions

Lifting capacity in practice – influencing factors

Holding efficiency is affected by specific conditions, such as (from priority):

Gap (betwixt the magnet and the plate), as even a tiny distance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
Loading method – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
Material type – ideal substrate is high-permeability steel. Cast iron may have worse magnetic properties.
Surface finish – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
Temperature – temperature increase results in weakening of force. It is worth remembering the thermal limit for a given model.

Lifting capacity was measured with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the load capacity is reduced by as much as 5 times. Additionally, even a slight gap between the magnet and the plate reduces the load capacity.

Safe handling of neodymium magnets

Machining danger

Drilling and cutting of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Product not for children

Product intended for adults. Small elements pose a choking risk, leading to severe trauma. Store out of reach of children and animals.

Bodily injuries

Big blocks can smash fingers in a fraction of a second. Do not place your hand between two strong magnets.

Impact on smartphones

A strong magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Do not bring magnets close to a device to prevent damaging the sensors.

Metal Allergy

A percentage of the population suffer from a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Prolonged contact may cause skin redness. We recommend use protective gloves.

Safe distance

Equipment safety: Strong magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, timepieces).

Thermal limits

Avoid heat. Neodymium magnets are sensitive to heat. If you require operation above 80°C, look for HT versions (H, SH, UH).

Respect the power

Handle magnets consciously. Their powerful strength can shock even experienced users. Stay alert and do not underestimate their force.

Risk of cracking

NdFeB magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets leads to them cracking into small pieces.

Warning for heart patients

Patients with a pacemaker should maintain an safe separation from magnets. The magnetic field can stop the functioning of the life-saving device.

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

UMP 65x45 [M8]x2 GW F230+ Lina / N38 - search holder

Technical details - UMP 65x45 [M8]x2 GW F230+ Lina / N38 - search holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Environmental data

Pulling force

Magnetic Induction

Check out also offers

MW 5x10 / N38 - cylindrical magnet

UI 45x13x6 [C321] / N38 - badge holder

MP 25x7.5/4.5x5 / N38 - ring magnet

MPL 20x3x2 / N38 - lamellar magnet

Strengths and weaknesses of neodymium magnets.

Pros

Weaknesses

Holding force characteristics

Maximum holding power of the magnet – what affects it?

Lifting capacity in practice – influencing factors

Safe handling of neodymium magnets

Machining danger

Product not for children

Bodily injuries

Impact on smartphones

Metal Allergy

Safe distance

Thermal limits

Respect the power

Risk of cracking

Warning for heart patients

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C