Product available Ships in 3 days

UMP 135x40 [M10+M12] GW F 600 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 210339

GTIN/EAN: 5906301813989

5.00

Diameter Ø

135 mm [±1 mm]

Height

40 mm [±1 mm]

Weight

4300 g

Load capacity

680.00 kg / 6668.52 N

Coating

[NiCuNi] Nickel

Magnetic Flux

~ 10 000 Gauss [±5%]

check parameters »

599.99 ZŁ with VAT / pcs + price for transport

487.80 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

Do you have purchase concerns?

Call us +48 22 499 98 98 alternatively send us a note using contact form the contact form page.
Force and structure of a magnet can be reviewed using our our magnetic 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!

Physical properties - UMP 135x40 [M10+M12] GW F 600 kg / N38 - search holder

Specification / characteristics - UMP 135x40 [M10+M12] GW F 600 kg / N38 - search holder

properties

properties	values
Cat. no.	210339
GTIN/EAN	5906301813989
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	135 mm [±1 mm]
Height	40 mm [±1 mm]
Weight	4300 g
Load capacity ~ ?	680.00 kg / 6668.52 N
Coating	[NiCuNi] Nickel
Holder Type	2 sided
Material Type	Structural steel S235 (ferrous)
Magnetic Flux	~ 10 000 Gauss [±5%]
Size/Mount Quantity	2xM10/1xM12
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMP 135x40 [M10+M12] GW F 600 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

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%

Sustainability

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: 210339-2026

Magnet Unit Converter

Magnet pull force

Force in kg

Force (N)

Force in lbs

Magnetic Field

Gauss (Gs)

Induction (T)

Input a figure in just one slot to receive results for the other units at once.

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It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. Model UMP 135x40 [M10+M12] GW F 600 kg / 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).

The double-sided model attracts from above and below, increasing the chance of hooking a find. 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.

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. We recommend always securing the thread with glue or tightening the eyelet firmly before first use.

This force applies to perfect adherence with the entire surface to a smooth, clean steel plate with a min. thickness of 20mm. 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. It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.

It is the smartest investment because for the identical price, you buy a premium mount that will last for many seasons than generic imports.

Most competitor mounts have weak shells that deform during the first hard impact against concrete or rocks.

Many sellers employ a tactic by promoting the power tested only on the top hook. GOLD mounts guarantees full transparency by providing the real parameters of the magnet, so you avoid disappointment during real field work.

{Unlike competitors importing from China, Dhit provides full support and real service assistance, which gives peace of mind after the transaction. Every mount is checked before shipping, which ensures that you the set will be of the highest quality.

Advantages and disadvantages of rare earth magnets.

Benefits

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

They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
They maintain their magnetic properties even under strong external field,
Thanks to the metallic finish, the plating of Ni-Cu-Ni, gold, or silver-plated gives an visually attractive appearance,
Neodymium magnets ensure maximum magnetic induction on a contact point, which allows for strong attraction,
Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
Possibility of individual modeling as well as modifying to individual conditions,
Fundamental importance in high-tech industry – they are used in hard drives, drive modules, medical equipment, and multitasking production systems.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:

They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
When exposed to high temperature, neodymium magnets suffer a drop in force. 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
Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
Due to limitations in realizing nuts and complex forms in magnets, we recommend using cover - magnetic holder.
Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, tiny parts of these magnets are able to complicate diagnosis medical in case of swallowing.
With large orders the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

The load parameter shown represents the limit force, obtained under optimal environment, meaning:

on a base made of structural steel, perfectly concentrating the magnetic field
possessing a thickness of minimum 10 mm to ensure full flux closure
with an ideally smooth touching surface
with direct contact (no coatings)
under perpendicular application of breakaway force (90-degree angle)
in temp. approx. 20°C

What influences lifting capacity in practice

During everyday use, the real power results from many variables, listed from the most important:

Gap between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the maximum value.
Plate thickness – insufficiently thick plate does not accept the full field, causing part of the flux to be escaped into the air.
Material type – ideal substrate is pure iron steel. Stainless steels may attract less.
Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
Temperature – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate decreases the load capacity.

Safety rules for work with neodymium magnets

Permanent damage

Keep cool. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).

Cards and drives

Do not bring magnets close to a wallet, laptop, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.

Compass and GPS

GPS units and smartphones are highly susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can decalibrate the sensors in your phone.

Do not give to children

NdFeB magnets are not intended for children. Accidental ingestion of a few magnets may result in them pinching intestinal walls, which poses a critical condition and necessitates urgent medical intervention.

Powerful field

Handle magnets with awareness. Their powerful strength can surprise even professionals. Be vigilant and do not underestimate their power.

Machining danger

Powder generated during grinding of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Implant safety

People with a heart stimulator must keep an absolute distance from magnets. The magnetism can disrupt the functioning of the implant.

Beware of splinters

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

Crushing force

Large magnets can smash fingers in a fraction of a second. Do not place your hand betwixt two attracting surfaces.

Sensitization to coating

A percentage of the population suffer from a contact allergy to nickel, which is the common plating for neodymium magnets. Extended handling might lead to dermatitis. We strongly advise use safety gloves.

Security! Need more info? Read our article: Why are neodymium magnets dangerous?

UMP 135x40 [M10+M12] GW F 600 kg / N38 - search holder

Physical properties - UMP 135x40 [M10+M12] GW F 600 kg / N38 - search holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Sustainability

Magnet pull force

Magnetic Field

Other offers

SM 25x300 [2xM8] / N42 - magnetic separator

MPL 15x10x2 / N38 - lamellar magnet

MW 15x1 / N38 - cylindrical magnet

UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread

Advantages and disadvantages of rare earth magnets.

Benefits

Disadvantages

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

What influences lifting capacity in practice

Safety rules for work with neodymium magnets

Permanent damage

Cards and drives

Compass and GPS

Do not give to children

Powerful field

Machining danger

Implant safety

Beware of splinters

Crushing force

Sensitization to coating

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C