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UMP 67x28 [M8+M10] GW F120 kg / N38 - search holder

search holder

Catalog no 210335

GTIN/EAN: 5906301813941

5.00

Diameter Ø

67 mm [±1 mm]

Height

28 mm [±1 mm]

Weight

700 g

Load capacity

180.00 kg / 1765.20 N

Coating

[NiCuNi] Nickel

technical details »

110.00 ZŁ with VAT / pcs + price for transport

89.43 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety
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Give us a call +48 888 99 98 98 or drop us a message via request form our website.
Force and form of neodymium magnets can be estimated using our online calculation tool.

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

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

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 data - UMP 67x28 [M8+M10] GW F120 kg / N38 - search holder

Specification / characteristics - UMP 67x28 [M8+M10] GW F120 kg / N38 - search holder

properties
properties values
Cat. no. 210335
GTIN/EAN 5906301813941
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 67 mm [±1 mm]
Height 28 mm [±1 mm]
Weight 700 g
Load capacity ~ ? 180.00 kg / 1765.20 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMP 67x28 [M8+M10] GW F120 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

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
Chemical composition
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: 210335-2026
Quick Unit Converter
Pulling force
Magnetic Induction
Just fill in a single box, to let the converter compute everything else instantly.

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The best choice are magnets in thick, chrome-plated housings dedicated to water applications. Model UMP 67x28 [M8+M10] GW F120 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).
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). A full set usually contains: magnet, polypropylene rope with appropriate strength, protective gloves, hook, and carabiner. Using thread glue is crucial to not lose the magnet in silt.
The capacity given in the name (e.g., 180.00 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.
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.
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 gluing and seating the magnet in the Dhit housing creates a solid structure that dampens shocks while fishing on difficult, rocky bottoms.
Many sellers employ a tactic by promoting the pull force measured exclusively on the top hook. Interestingly, in the entire internet, it is hard to find videos demonstrating the actual strength of other brands on the side hook.
{By choosing GOLD mounts, you support a local market leader that perfectly understands the specifics of local rivers and lakes. Instead of risking with unknown goods, stick with the market leader that cares about the happiness of searcher.

Pros as well as cons of rare earth magnets.

Pros

Besides their high retention, neodymium magnets are valued for these benefits:
  • They retain attractive force for almost ten years – the loss is just ~1% (according to analyses),
  • Magnets effectively resist against demagnetization caused by ambient magnetic noise,
  • Thanks to the metallic finish, the surface of Ni-Cu-Ni, gold, or silver gives an modern appearance,
  • They show high magnetic induction at the operating surface, which affects their effectiveness,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of accurate shaping as well as optimizing to defined conditions,
  • Huge importance in modern industrial fields – they serve a role in data components, brushless drives, advanced medical instruments, as well as modern systems.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Disadvantages

Disadvantages of NdFeB magnets:
  • At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 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 magnets in rubber or plastics, which secure oxidation as well as corrosion.
  • We recommend a housing - magnetic holder, due to difficulties in realizing threads inside the magnet and complicated forms.
  • Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. Additionally, small elements of these magnets can be problematic in diagnostics medical when they are in the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

Information about lifting capacity was defined for ideal contact conditions, including:
  • with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
  • with a cross-section no less than 10 mm
  • with an ground touching surface
  • under conditions of no distance (surface-to-surface)
  • for force acting at a right angle (pull-off, not shear)
  • at ambient temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

It is worth knowing that the magnet holding will differ subject to the following factors, starting with the most relevant:
  • Space between surfaces – every millimeter of separation (caused e.g. by varnish or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Direction of force – maximum parameter is reached only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
  • Steel thickness – too thin plate does not close the flux, causing part of the flux to be wasted into the air.
  • Steel grade – the best choice is high-permeability steel. Stainless steels may have worse magnetic properties.
  • Base smoothness – the more even the plate, the better the adhesion and stronger the hold. Unevenness creates an air distance.
  • Operating temperature – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Warnings
Cards and drives

Do not bring magnets near a purse, computer, or TV. The magnetism can permanently damage these devices and erase data from cards.

Warning for heart patients

Warning for patients: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.

Respect the power

Use magnets consciously. Their huge power can shock even professionals. Be vigilant and do not underestimate their force.

Risk of cracking

Protect your eyes. Magnets can explode upon violent connection, ejecting shards into the air. Wear goggles.

Maximum temperature

Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. The loss of strength is permanent.

Do not drill into magnets

Dust generated during machining of magnets is flammable. Do not drill into magnets unless you are an expert.

Bone fractures

Protect your hands. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!

This is not a toy

Absolutely store magnets out of reach of children. Ingestion danger is high, and the consequences of magnets connecting inside the body are fatal.

GPS and phone interference

A powerful magnetic field interferes with the operation of magnetometers in smartphones and GPS navigation. Keep magnets close to a device to prevent damaging the sensors.

Sensitization to coating

Nickel alert: The nickel-copper-nickel coating contains nickel. If an allergic reaction occurs, cease handling magnets and wear gloves.

Important! Details about hazards in the article: Magnet Safety Guide.