Product available Ships today (order by 14:00)

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: 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%]

technical details »

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

Want to negotiate?

Give us a call +48 22 499 98 98 if you prefer let us know by means of request form the contact page.
Lifting power as well as form of neodymium magnets can be verified using our magnetic 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!

Product card - 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

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: 210339-2025

Magnet Unit Converter

Force (pull)

Force in kg

Pounds (lbs)

Magnetic Induction

Gauss (Gs)

Tesla (T)

Insert a value into a field, to see all other values will update instantly.

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SM 25x225 [2xM8] / N42 - magnetic separator

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HH 42x8.8 [M6] / N38 - through hole magnetic holder

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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. This specific magnet ensures a laboratory lifting capacity of up to 680.00 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. 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. 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.

If you find a dangerous object (unexploded ordnance) or an antique, you have a legal obligation to report it to appropriate services (Police, conservator). It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.

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

A special technology of mounting the magnet in the protective cup builds a unified structure that dampens shocks while working on difficult, rocky bottoms.

Many sellers employ a tactic by promoting the pull force tested exclusively on the vertical mount. Interestingly, in the web, it is hard to find recordings testing the actual strength of other brands on the side hook.

{Unlike competitors importing from China, Dhit provides full support and instant warranty help, which is crucial after the transaction. Instead of risking with random brands, stick with the market leader that cares about the satisfaction of searcher.

Advantages and disadvantages of Nd₂Fe₁₄B magnets.

Benefits

In addition to their pulling strength, neodymium magnets provide the following advantages:

They have constant strength, and over around 10 years their attraction force decreases symbolically – ~1% (in testing),
They feature excellent resistance to magnetic field loss as a result of external fields,
In other words, due to the glossy finish of gold, the element looks attractive,
The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
Thanks to the option of flexible forming and customization to individualized requirements, NdFeB magnets can be manufactured in a wide range of forms and dimensions, which increases their versatility,
Wide application in innovative solutions – they are commonly used in hard drives, drive modules, medical devices, also other advanced devices.
Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of neodymium magnets:

At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
Due to limitations in creating nuts and complex forms in magnets, we recommend using cover - magnetic holder.
Possible danger resulting from small fragments of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small components of these devices are able to complicate diagnosis medical in case of swallowing.
With budget limitations the cost of neodymium magnets is economically unviable,

Pull force analysis

Highest magnetic holding force – what affects it?

Breakaway force was defined for optimal configuration, taking into account:

using a plate made of mild steel, acting as a magnetic yoke
whose thickness reaches at least 10 mm
with an ideally smooth touching surface
under conditions of ideal adhesion (metal-to-metal)
during pulling in a direction perpendicular to the mounting surface
at ambient temperature approx. 20 degrees Celsius

Lifting capacity in practice – influencing factors

Holding efficiency is affected by working environment parameters, mainly (from most important):

Air gap (between the magnet and the metal), because even a very small clearance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, corrosion or dirt).
Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
Material type – the best choice is pure iron steel. Stainless steels may generate lower lifting capacity.
Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
Thermal factor – hot environment weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the holding force is lower. In addition, even a minimal clearance between the magnet and the plate reduces the load capacity.

Warnings

Life threat

Individuals with a heart stimulator have to maintain an safe separation from magnets. The magnetism can interfere with the functioning of the implant.

Power loss in heat

Do not overheat. NdFeB magnets are susceptible to temperature. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Caution required

Before use, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Think ahead.

Safe distance

Powerful magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Magnets are brittle

NdFeB magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets leads to them breaking into small pieces.

Bone fractures

Risk of injury: The pulling power is so great that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.

Impact on smartphones

Note: neodymium magnets produce a field that confuses precision electronics. Maintain a separation from your mobile, device, and GPS.

Do not drill into magnets

Combustion risk: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this risks ignition.

Avoid contact if allergic

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If redness occurs, immediately stop handling magnets and use protective gear.

Choking Hazard

Adult use only. Tiny parts pose a choking risk, causing severe trauma. Keep out of reach of children and animals.

Caution! Details about risks in the article: Magnet Safety Guide.

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

Product card - 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

Material specification

Ecology and recycling (GPSR)

Force (pull)

Magnetic Induction

Other offers

MPL 5x4x1 / N38 - lamellar magnet

MW 40x10 / N38 - cylindrical magnet

SM 25x225 [2xM8] / N42 - magnetic separator

HH 42x8.8 [M6] / N38 - through hole magnetic holder

Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

Disadvantages

Pull force analysis

Highest magnetic holding force – what affects it?

Lifting capacity in practice – influencing factors

Warnings

Life threat

Power loss in heat

Caution required

Safe distance

Magnets are brittle

Bone fractures

Impact on smartphones

Do not drill into magnets

Avoid contact if allergic

Choking Hazard

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages and disadvantages of Nd₂Fe₁₄B magnets.