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UMP 29x10 [M5] GW - search holder

search holder

Catalog no 210230

GTIN/EAN: 5906301813903

Diameter Ø

29 mm [±1 mm]

Height

10 mm [±1 mm]

Weight

0.1 g

Load capacity

32.00 kg / 313.81 N

Coating

[NiCuNi] Nickel

view technical specifications »

10.50 ZŁ with VAT / pcs + price for transport

8.54 ZŁ net + 23% VAT / pcs

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Contact us by phone +48 888 99 98 98 or send us a note using request form the contact form page.
Lifting power as well as shape of neodymium magnets can be checked with our online calculation tool.

Orders submitted before 14:00 will be dispatched today!

💡 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!

Detailed specification - UMP 29x10 [M5] GW - search holder

Specification / characteristics - UMP 29x10 [M5] GW - search holder

properties
properties values
Cat. no. 210230
GTIN/EAN 5906301813903
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 29 mm [±1 mm]
Height 10 mm [±1 mm]
Weight 0.1 g
Load capacity ~ ? 32.00 kg / 313.81 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

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%
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: 210230-2026
Magnet Unit Converter
Force (pull)
Magnetic Field
Insert a value in a box, and all other values change automatically.

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For underwater searches, we recommend specialized holders from the GOLD series, designed for working in difficult conditions. Model UMP 29x10 [M5] GW 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.
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). After each fishing trip, we recommend rinsing the magnet with fresh water and drying it.
Check the product title and description to see if you are buying just the magnet or the XL set. 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.
It is a technical parameter defining perpendicular break force, not the weight of an object in water. 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.
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 choosing Dhit GOLD mounts, you receive a higher quality standard and true magnetic power for the average cost.
Dhit GOLD mounts utilize a robust construction that provides a true shield for the magnetic core.
It is worth remembering that the identical mount pulled by the lateral point often has as little as a fraction of power instead of the promised 200 kg. The Dhit brand guarantees 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 instant service assistance, which is crucial after the transaction. Every product is individually inspected before delivery, which ensures that you the set will be of the defect-free.

Advantages as well as disadvantages of neodymium magnets.

Pros

Besides their durability, neodymium magnets are valued for these benefits:
  • They have constant strength, and over nearly ten years their attraction force decreases symbolically – ~1% (according to theory),
  • Magnets effectively protect themselves against demagnetization caused by external fields,
  • By covering with a lustrous coating of silver, the element has an aesthetic look,
  • Magnets are characterized by impressive magnetic induction on the outer side,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures approaching 230°C and above...
  • In view of the potential of precise molding and customization to individualized needs, magnetic components can be produced in a wide range of shapes and sizes, which increases their versatility,
  • Key role in modern industrial fields – they are commonly used in computer drives, electromotive mechanisms, precision medical tools, and modern systems.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,

Cons

What to avoid - cons of neodymium magnets: weaknesses and usage proposals
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • Neodymium magnets decrease their power 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
  • They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in producing threads and complicated shapes in magnets, we recommend using cover - magnetic mount.
  • Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small components of these products can disrupt the diagnostic process medical after entering the body.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what it depends on?

Information about lifting capacity was defined for the most favorable conditions, assuming:
  • on a block made of structural steel, effectively closing the magnetic flux
  • with a thickness minimum 10 mm
  • with an polished contact surface
  • with zero gap (without paint)
  • during detachment in a direction vertical to the mounting surface
  • in temp. approx. 20°C

Determinants of practical lifting force of a magnet

In real-world applications, the actual holding force depends on many variables, presented from the most important:
  • Gap between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
  • Steel grade – the best choice is high-permeability steel. Stainless steels may have worse magnetic properties.
  • Smoothness – full contact is obtained only on polished steel. Rough texture create air cushions, weakening the magnet.
  • Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a small distance between the magnet and the plate reduces the holding force.

Warnings
Safe distance

Very strong magnetic fields can destroy records on payment cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.

Bone fractures

Protect your hands. Two powerful magnets will join immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!

Powerful field

Be careful. Rare earth magnets attract from a long distance and connect with massive power, often quicker than you can move away.

Skin irritation risks

It is widely known that nickel (standard magnet coating) is a common allergen. If your skin reacts to metals, prevent touching magnets with bare hands and choose coated magnets.

Magnetic interference

An intense magnetic field interferes with the functioning of compasses in smartphones and GPS navigation. Do not bring magnets near a device to avoid breaking the sensors.

Do not drill into magnets

Powder generated during machining of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Implant safety

Life threat: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.

Magnets are brittle

Despite the nickel coating, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Product not for children

Absolutely store magnets away from children. Choking hazard is significant, and the effects of magnets clamping inside the body are very dangerous.

Operating temperature

Avoid heat. Neodymium magnets are susceptible to heat. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).

Warning! Want to know more? Check our post: Are neodymium magnets dangerous?