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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

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
Want to talk magnets?

Call us +48 22 499 98 98 otherwise drop us a message through our online form the contact form page.
Lifting power along with shape of magnetic components can be tested using our online calculation tool.

Orders submitted before 14:00 will be dispatched today!

💡 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 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
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
Quick Unit Converter
Pulling force
Magnetic Field
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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).
Double-sided holders (Two-Side) have two active magnetic surfaces and two mounting holes. The side eyelet ensures the magnet doesn't stand sideways or "on edge" during pulling. The double-sided version increases search efficiency by 100%.
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. 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.
The capacity given in the name (e.g., 32.00 kg) is the maximum value measured in laboratory conditions. The magnet may slide on round elements (bicycle frame) due to the small contact area. Therefore, to pull objects weighing 10kg from the water, a magnet with a capacity of 200-300kg is often needed.
If you find a dangerous object (unexploded ordnance) or an antique, you have a legal obligation to report it to appropriate services (Police, conservator). Magnet fishing is an eco-friendly hobby if you clean the river from trash and scrap.
It is the best value because for the same money, you obtain a premium mount that will serve you for much longer than budget alternatives.
The GOLD series utilize a robust construction that provides a true shield for the brittle neodymium.
You should know that the same mount used by the side hook often has only a fraction of power instead of the declared 200 kg. Interestingly, in the entire internet, there are virtually no recordings demonstrating the real side-pull force of competitor products on the side hook.
{By choosing GOLD mounts, you support a local market leader that knows the conditions of our waters. Instead of risking with unknown goods, it is better to choose the market leader that cares about the happiness of searcher.

Strengths and weaknesses of neodymium magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They retain magnetic properties for around 10 years – the loss is just ~1% (based on simulations),
  • They show high resistance to demagnetization induced by external magnetic fields,
  • In other words, due to the glossy finish of nickel, the element is aesthetically pleasing,
  • They feature high magnetic induction at the operating surface, which increases their power,
  • Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
  • In view of the potential of flexible shaping and customization to unique needs, magnetic components can be modeled in a wide range of forms and dimensions, which makes them more universal,
  • Huge importance in electronics industry – they are commonly used in mass storage devices, drive modules, advanced medical instruments, also other advanced devices.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Weaknesses

What to avoid - cons of neodymium magnets and ways of using them
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in creating nuts and complicated shapes in magnets, we propose using casing - magnetic mechanism.
  • Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these products can complicate diagnosis medical when they are in the body.
  • Due to expensive raw materials, their price exceeds standard values,

Lifting parameters

Magnetic strength at its maximum – what contributes to it?

The specified lifting capacity refers to the maximum value, recorded under ideal test conditions, namely:
  • on a block made of mild steel, perfectly concentrating the magnetic field
  • possessing a thickness of at least 10 mm to avoid saturation
  • with an polished touching surface
  • without the slightest clearance between the magnet and steel
  • under perpendicular force vector (90-degree angle)
  • at conditions approx. 20°C

Lifting capacity in real conditions – factors

It is worth knowing that the magnet holding will differ depending on the following factors, in order of importance:
  • Distance – the presence of foreign body (rust, tape, air) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Angle of force application – maximum parameter is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
  • Plate thickness – too thin plate does not accept the full field, causing part of the power to be escaped into the air.
  • Chemical composition of the base – low-carbon steel gives the best results. Alloy steels lower magnetic properties and holding force.
  • Smoothness – full contact is possible only on polished steel. Rough texture reduce the real contact area, reducing force.
  • Thermal environment – temperature increase results in weakening of induction. Check the thermal limit for a given model.

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under a perpendicular pulling force, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Moreover, even a minimal clearance between the magnet and the plate reduces the lifting capacity.

Safe handling of neodymium magnets
Data carriers

Equipment safety: Strong magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, mechanical watches).

Do not drill into magnets

Machining of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Beware of splinters

Despite the nickel coating, the material is delicate and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.

Magnetic interference

A strong magnetic field interferes with the functioning of magnetometers in phones and navigation systems. Do not bring magnets close to a smartphone to prevent damaging the sensors.

Allergic reactions

Certain individuals experience a sensitization to Ni, which is the typical protective layer for neodymium magnets. Extended handling may cause an allergic reaction. We suggest use safety gloves.

This is not a toy

Neodymium magnets are not toys. Accidental ingestion of multiple magnets can lead to them attracting across intestines, which constitutes a direct threat to life and necessitates urgent medical intervention.

Physical harm

Large magnets can crush fingers in a fraction of a second. Never place your hand between two attracting surfaces.

Life threat

Patients with a heart stimulator have to maintain an absolute distance from magnets. The magnetic field can disrupt the operation of the life-saving device.

Heat sensitivity

Avoid heat. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).

Safe operation

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

Danger! Learn more about risks in the article: Magnet Safety Guide.