Product available Ships today (order by 14:00)

UMP 97x40 [M8+M10] GW F300 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 210383

GTIN/EAN: 5906301814023

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%]

view parameters »

370.00 ZŁ with VAT / pcs + price for transport

300.81 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Looking for a better price?

Contact us by phone +48 888 99 98 98 or send us a note using our online form through our site.
Lifting power as well as structure of a magnet can be calculated on our magnetic mass calculator.

Orders submitted before 14:00 will be dispatched today!

💡 Guide: How to choose a decent magnet and not get ripped off?

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 parameters of the product - UMP 97x40 [M8+M10] GW F300 Lina / N38 - search holder

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

properties

properties	values
Cat. no.	210383
GTIN/EAN	5906301814023
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%]
Rope Length	25 m
Rope Capacity	~ 1595 kg
Rope Diameter	Ø 8 mm
Gloves	1 pair
Size/Mount Quantity	2xM8/1xM10
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMP 97x40 [M8+M10] GW F300 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

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: 210383-2026

Magnet Unit Converter

Force (pull)

Force (N)

lbs

Field Strength

Induction (T)

Simply fill in one field, to let the tool fill in the rest automatically.

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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. Model UMP 97x40 [M8+M10] GW F300 Lina / N38 offers an optimal weight-to-pull force ratio, which is important for repeated throwing. For beginners, we recommend lighter single-sided models (F80-F200), for advanced users - heavier double-sided (Two-Side) ones.

Double-sided holders (Two-Side) have two active magnetic surfaces and two mounting holes. 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.

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. After each fishing trip, we recommend rinsing the magnet with fresh water and drying it.

Most of our starter kits are complete and ready to use. 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., 380.00 kg) is the maximum value measured in laboratory conditions. The magnet may slide on round elements (bicycle frame) due to the small contact area. A large power reserve is essential in real search conditions.

Possessing and using a neodymium magnet to clean the bottom is generally legal, provided you are not searching for artifacts protected by law. We recommend familiarizing yourself with current local regulations and heritage protection laws.

In contrast to other brands, Dhit uses the highest quality components, which translates into a clear advantage during every trip to the water.

Most magnets on the market have thin casings that deform during the any strong impact against underwater obstacles.

You should know that the same mount pulled by the lateral point often has as little as 40 kg of strength instead of the declared 200 kg. The Dhit brand focuses on full transparency by stating the actual capabilities of the magnet, so you can be sure during real field work.

{In contrast to competitors importing from China, Dhit provides full support and real warranty help, which gives peace of mind after the purchase. Every mount is individually inspected before shipping, which ensures that you the set will be of the defect-free.

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.

Advantages

Apart from their superior power, neodymium magnets have these key benefits:

Their power is durable, and after approximately ten years it drops only by ~1% (theoretically),
They are resistant to demagnetization induced by external magnetic fields,
By covering with a decorative layer of gold, the element presents an nice look,
They are known for high magnetic induction at the operating surface, which increases their power,
Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
Thanks to modularity in shaping and the ability to modify to client solutions,
Significant place in modern industrial fields – they are utilized in mass storage devices, electric drive systems, advanced medical instruments, as well as modern systems.
Thanks to their power density, small magnets offer high operating force, with minimal size,

Cons

Disadvantages of neodymium magnets:

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Limited ability of producing threads in the magnet and complicated shapes - preferred is a housing - magnetic holder.
Health risk to health – tiny shards of magnets are risky, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
Due to neodymium price, their price exceeds standard values,

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

The force parameter is a result of laboratory testing executed under the following configuration:

with the contact of a yoke made of low-carbon steel, ensuring full magnetic saturation
possessing a thickness of minimum 10 mm to ensure full flux closure
with a plane free of scratches
with zero gap (without impurities)
for force applied at a right angle (pull-off, not shear)
at conditions approx. 20°C

Determinants of practical lifting force of a magnet

Bear in mind that the application force will differ influenced by elements below, starting with the most relevant:

Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of maximum force).
Plate thickness – insufficiently thick plate does not close the flux, causing part of the flux to be escaped to the other side.
Steel grade – the best choice is high-permeability steel. Stainless steels may attract less.
Smoothness – ideal contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
Temperature influence – high temperature reduces pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was determined with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet and the plate reduces the holding force.

H&S for magnets

Data carriers

Equipment safety: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, mechanical watches).

Sensitization to coating

Some people have a sensitization to Ni, which is the standard coating for neodymium magnets. Prolonged contact may cause skin redness. We suggest wear safety gloves.

Finger safety

Large magnets can break fingers in a fraction of a second. Never put your hand between two strong magnets.

Do not drill into magnets

Fire warning: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this may cause fire.

Powerful field

Exercise caution. Rare earth magnets attract from a long distance and connect with massive power, often faster than you can react.

Impact on smartphones

Remember: rare earth magnets produce a field that confuses precision electronics. Maintain a safe distance from your phone, device, and navigation systems.

Keep away from children

Adult use only. Small elements pose a choking risk, causing severe trauma. Keep away from children and animals.

Medical implants

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

Magnets are brittle

Watch out for shards. Magnets can explode upon violent connection, launching shards into the air. Wear goggles.

Permanent damage

Regular neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.

Important! Looking for details? Check our post: Why are neodymium magnets dangerous?

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

Technical parameters of the product - UMP 97x40 [M8+M10] GW F300 Lina / N38 - search holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Environmental data

Force (pull)

Field Strength

View more offers

MPL 20x10x5 / N38 - lamellar magnet

SM 18x125 [2xM5] / N42 - magnetic separator

BM 700x180x75 [8xM10] - magnetic beam

SM 25x125 [2xM8] / N42 - magnetic separator

Strengths as well as weaknesses of Nd2Fe14B magnets.

Advantages

Cons

Holding force characteristics

Magnetic strength at its maximum – what it depends on?

Determinants of practical lifting force of a magnet

H&S for magnets

Data carriers

Sensitization to coating

Finger safety

Do not drill into magnets

Powerful field

Impact on smartphones

Keep away from children

Medical implants

Magnets are brittle

Permanent damage

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.