Product available Ships today (order by 14:00)

UMP 97x40 [M8+M10] GW F300 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: 1-6500
Rating: 5

search holder

Catalog no 210337

GTIN/EAN: 5906301813965

5.00

Diameter Ø

97 mm [±1 mm]

Height

40 mm [±1 mm]

Weight

2200 g

Load capacity

380.00 kg / 3726.53 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 10 000 Gauss [±5%]

product parameters »

300.00 ZŁ with VAT / pcs + price for transport

243.90 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

243.90 ZŁ

300.00 ZŁ

price from 5 pcs

229.27 ZŁ

282.00 ZŁ

price from 15 pcs

214.63 ZŁ

264.00 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need help making a decision?

Call us now +48 22 499 98 98 or let us know by means of form our website.
Lifting power along with structure of a neodymium magnet can be tested on our power calculator.

Orders placed before 14:00 will be shipped the same business day.

💡 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 - UMP 97x40 [M8+M10] GW F300 kg / N38 - search holder

Specification / characteristics - UMP 97x40 [M8+M10] GW F300 kg / N38 - search holder

properties

properties	values
Cat. no.	210337
GTIN/EAN	5906301813965
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	97 mm [±1 mm]
Height	40 mm [±1 mm]
Weight	2200 g
Load capacity ~ ?	380.00 kg / 3726.53 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 97x40 [M8+M10] GW F300 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 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: 210337-2025

Quick Unit Converter

Force (pull)

Force in kg

lbs

Field Strength

Gauss (Gs)

Just populate one field, and the tool calculate the rest automatically.

View more products

Product available Ships today (order by 14:00)

UI 45x13x6 [C321] / N38 - badge holder

2.40 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 10x10x10 / N38 - lamellar magnet

5.29 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 28.9x10 / N38 - cylindrical magnet

23.99 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 22x6 / N38 - cylindrical magnet

6.11 ZŁ brutto / pcs

For underwater searches, we recommend specialized holders from the GOLD series, designed for working in difficult conditions. This specific magnet ensures a laboratory lifting capacity of up to 380.00 kg, which translates into high effectiveness in water. 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. The side eyelet ensures the magnet doesn't stand sideways or "on edge" during pulling. Single-sided magnets are usually lighter and cheaper but less effective for long throws.

Our holders have a thick steel housing covered with an anti-corrosion layer (chrome, nickel, zinc). 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.

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. Using thread glue is crucial to not lose the magnet in silt.

The capacity given in the name (e.g., 380.00 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%. 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.

By selecting Dhit GOLD mounts, you receive a higher quality standard and real N52 grade for the average cost.

As a result, despite the affordable cost, the mechanical durability of the Dhit product puts it far ahead of the competition.

Many sellers employ a tactic by promoting the pull force measured only on the top hook. Interestingly, in the entire internet, it is hard to find videos demonstrating the actual strength of competitor products on the side hook.

{In contrast to anonymous sellers, Dhit provides expert advice and real service assistance, which is crucial after the purchase. Every product is individually inspected before delivery, which guarantees that you receive equipment of the defect-free.

Strengths as well as weaknesses of neodymium magnets.

Strengths

Besides their stability, neodymium magnets are valued for these benefits:

They have constant strength, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
They retain their magnetic properties even under strong external field,
A magnet with a metallic gold surface has an effective appearance,
They feature high magnetic induction at the operating surface, which improves attraction properties,
Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures reaching 230°C and above...
Due to the ability of free molding and adaptation to specialized solutions, neodymium magnets can be manufactured in a broad palette of shapes and sizes, which makes them more universal,
Fundamental importance in future technologies – they are utilized in magnetic memories, drive modules, diagnostic systems, as well as complex engineering applications.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of neodymium magnets:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also increases their durability
Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
We suggest cover - magnetic mount, due to difficulties in creating nuts inside the magnet and complex shapes.
Health risk related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets can disrupt the diagnostic process medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Maximum lifting capacity of the magnet – what contributes to it?

The declared magnet strength refers to the peak performance, recorded under laboratory conditions, meaning:

on a base made of mild steel, optimally conducting the magnetic flux
whose transverse dimension reaches at least 10 mm
with an polished contact surface
without any air gap between the magnet and steel
during pulling in a direction perpendicular to the plane
in stable room temperature

Lifting capacity in practice – influencing factors

Real force is affected by specific conditions, mainly (from most important):

Clearance – the presence of foreign body (paint, tape, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
Steel grade – ideal substrate is high-permeability steel. Hardened steels may generate lower lifting capacity.
Smoothness – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity was determined using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under shearing force the load capacity is reduced by as much as 75%. Moreover, even a slight gap between the magnet and the plate reduces the holding force.

H&S for magnets

Crushing force

Large magnets can break fingers instantly. Do not put your hand betwixt two strong magnets.

Cards and drives

Intense magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.

Do not drill into magnets

Mechanical processing of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Heat sensitivity

Watch the temperature. Exposing the magnet to high heat will ruin its properties and pulling force.

Medical interference

Health Alert: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.

Handling rules

Handle magnets with awareness. Their immense force can shock even experienced users. Plan your moves and respect their power.

Material brittleness

Neodymium magnets are ceramic materials, which means they are fragile like glass. Clashing of two magnets will cause them breaking into small pieces.

Skin irritation risks

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If redness appears, cease handling magnets and use protective gear.

Phone sensors

A powerful magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Maintain magnets close to a device to avoid breaking the sensors.

Keep away from children

Absolutely keep magnets away from children. Risk of swallowing is high, and the effects of magnets clamping inside the body are fatal.

Security! More info about hazards in the article: Magnet Safety Guide.

UMP 97x40 [M8+M10] GW F300 kg / N38 - search holder

Technical - UMP 97x40 [M8+M10] GW F300 kg / N38 - search holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Ecology and recycling (GPSR)

Force (pull)

Field Strength

View more products

UI 45x13x6 [C321] / N38 - badge holder

MPL 10x10x10 / N38 - lamellar magnet

MW 28.9x10 / N38 - cylindrical magnet

MW 22x6 / N38 - cylindrical magnet

Strengths as well as weaknesses of neodymium magnets.

Strengths

Disadvantages

Pull force analysis

Maximum lifting capacity of the magnet – what contributes to it?

Lifting capacity in practice – influencing factors

H&S for magnets

Crushing force

Cards and drives

Do not drill into magnets

Heat sensitivity

Medical interference

Handling rules

Material brittleness

Skin irritation risks

Phone sensors

Keep away from children

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C