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UMP 29x10 [M5] GW - search holder

search holder

Catalog no 210230

GTIN/EAN: 5906301813903

Load capacity 32.00 kg / 313.81 N
Diameter Ø
29 mm [±1 mm]
Height
10 mm [±1 mm]
Weight
0.1 g
Coating
[NiCuNi] Nickel
technical details »

10.50 zł with VAT / pcs + price for transport

8.54 zł net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety
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Contact us by phone +48 22 499 98 98 or let us know using request form the contact form page.
Parameters as well as shape of a magnet can be calculated with our power calculator.

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💡 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!

Product card - 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
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%

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
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UMP 75x25 [M10x3] GW F200 PLATINIUM / N52 - search holder
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UMP 75x25 [M10x3] GW F200 PLATINIUM / N52 - search holder

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It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. Model UMP 29x10 [M5] GW 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.
The double-sided model attracts from above and below, increasing the chance of hooking a find. The side eyelet ensures the magnet doesn't stand sideways or "on edge" during pulling. 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. Avoid throwing the magnet against bridge pillars or hard obstacles. 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). 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.
The capacity given in the name (e.g., 32.00 kg) is the maximum value measured in laboratory conditions. In a river, objects are often rusty, silted, or irregular in shape (e.g., pipes), which drastically reduces grip strength. Therefore, to pull objects weighing 10kg from the water, a magnet with a capacity of 200-300kg is often needed.
Searches are allowed as long as you do not interfere with archaeological sites or search for weapons. 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 serve you for much longer than generic imports.
Most competitor mounts have weak shells that deform during the any strong impact against concrete or rocks.
Many distributors use a trick by promoting the pull force measured only on the vertical mount. The Dhit brand guarantees full transparency by providing the real parameters of the magnet, so you avoid disappointment 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 transaction. Don't risk it with unknown goods, it is better to choose proven gear that ensures the satisfaction of every user.

Pros and cons of Nd2Fe14B magnets.

Pros

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (according to literature),
  • Magnets very well protect themselves against loss of magnetization caused by ambient magnetic noise,
  • In other words, due to the glossy layer of silver, the element gains a professional look,
  • Neodymium magnets ensure maximum magnetic induction on a small surface, which increases force concentration,
  • 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...
  • Possibility of precise forming as well as modifying to individual applications,
  • Universal use in modern industrial fields – they are utilized in HDD drives, drive modules, precision medical tools, also other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
  • Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in producing threads and complex shapes in magnets, we recommend using casing - magnetic mechanism.
  • Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small elements of these magnets are able to be problematic in diagnostics medical when they are in the body.
  • With large orders the cost of neodymium magnets is economically unviable,

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

Magnet power was defined for the most favorable conditions, including:
  • with the use of a yoke made of low-carbon steel, ensuring full magnetic saturation
  • possessing a thickness of at least 10 mm to ensure full flux closure
  • with an ideally smooth touching surface
  • without the slightest insulating layer between the magnet and steel
  • for force acting at a right angle (in the magnet axis)
  • in stable room temperature

Lifting capacity in practice – influencing factors

It is worth knowing that the application force may be lower depending on elements below, in order of importance:
  • Air gap (between the magnet and the metal), as even a microscopic clearance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to varnish, rust or dirt).
  • Loading method – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Metal type – different alloys reacts the same. Alloy additives weaken the interaction with the magnet.
  • Smoothness – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Thermal factor – high temperature weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

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

Precautions when working with NdFeB magnets
Mechanical processing

Mechanical processing of neodymium magnets poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Safe operation

Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.

GPS and phone interference

GPS units and smartphones are extremely sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.

Crushing risk

Pinching hazard: The pulling power is so great that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.

Shattering risk

NdFeB magnets are sintered ceramics, which means they are very brittle. Impact of two magnets will cause them cracking into small pieces.

Demagnetization risk

Standard neodymium magnets (N-type) lose power when the temperature goes above 80°C. The loss of strength is permanent.

Danger to pacemakers

Medical warning: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.

Danger to the youngest

Absolutely keep magnets out of reach of children. Risk of swallowing is high, and the effects of magnets clamping inside the body are very dangerous.

Nickel coating and allergies

Medical facts indicate that the nickel plating (standard magnet coating) is a strong allergen. For allergy sufferers, prevent direct skin contact and choose encased magnets.

Magnetic media

Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can destroy these devices and wipe information from cards.

Safety First! Need more info? Read our article: Are neodymium magnets dangerous?