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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

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10.50 ZŁ with VAT / pcs + price for transport

8.54 ZŁ net + 23% VAT / pcs

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Call us now +48 888 99 98 98 or get in touch through our online form the contact page.
Parameters along with appearance of magnetic components can be estimated using our power calculator.

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💡 Check why professionals choose Dhit over cheap substitutes

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 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
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%
Sustainability
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
Measurement Calculator
Pulling force
Magnetic Induction
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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. 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. 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. 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.
Most of our starter kits are complete and ready to use. We often add thread glue to secure the eyelet against unscrewing in water. Using thread glue is crucial to not lose the magnet in silt.
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%. 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. 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 buy professional-grade equipment that will serve you for many seasons than generic imports.
Most competitor mounts have weak shells that deform during the any strong impact against concrete or rocks.
Many distributors employ a tactic by promoting the pull force measured exclusively on the top hook. Interestingly, in the entire internet, it is hard to find recordings testing the actual strength of other brands on the lateral attachment.
{In contrast to anonymous sellers, Dhit provides full support and instant warranty help, which is crucial after the transaction. Every mount is individually inspected before shipping, which guarantees that you the set will be of the highest quality.

Strengths and weaknesses of neodymium magnets.

Pros

Apart from their notable holding force, neodymium magnets have these key benefits:
  • They retain attractive force for nearly ten years – the loss is just ~1% (according to analyses),
  • They possess excellent resistance to weakening of magnetic properties due to external fields,
  • Thanks to the glossy finish, the coating of nickel, gold, or silver gives an visually attractive appearance,
  • The surface of neodymium magnets generates a maximum magnetic field – this is one of their assets,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of detailed creating and modifying to atypical conditions,
  • Fundamental importance in innovative solutions – they serve a role in HDD drives, electromotive mechanisms, precision medical tools, and other advanced devices.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in miniature devices

Cons

What to avoid - cons of neodymium magnets: weaknesses and usage proposals
  • At very strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • NdFeB magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
  • Due to limitations in realizing nuts and complex shapes in magnets, we propose using a housing - magnetic mount.
  • Potential hazard resulting from small fragments of magnets are risky, if swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these products can be problematic in diagnostics medical when they are in the body.
  • With large orders the cost of neodymium magnets is a challenge,

Pull force analysis

Maximum lifting capacity of the magnet – what affects it?

Breakaway force was defined for ideal contact conditions, assuming:
  • using a plate made of high-permeability steel, functioning as a circuit closing element
  • possessing a massiveness of minimum 10 mm to avoid saturation
  • with a surface perfectly flat
  • without any clearance between the magnet and steel
  • during pulling in a direction perpendicular to the plane
  • at ambient temperature approx. 20 degrees Celsius

Practical lifting capacity: influencing factors

Please note that the working load will differ depending on the following factors, in order of importance:
  • Gap between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
  • Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of maximum force).
  • Steel thickness – too thin sheet causes magnetic saturation, causing part of the flux to be lost to the other side.
  • Material composition – not every steel reacts the same. High carbon content worsen the attraction effect.
  • Base smoothness – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Thermal environment – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, in contrast under parallel forces the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets
Keep away from computers

Device Safety: Neodymium magnets can ruin data carriers and sensitive devices (pacemakers, medical aids, mechanical watches).

Eye protection

Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Do not drill into magnets

Fire warning: Neodymium dust is highly flammable. Do not process magnets without safety gear as this may cause fire.

Permanent damage

Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.

Pacemakers

Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

Bodily injuries

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

This is not a toy

Always keep magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are very dangerous.

Sensitization to coating

Nickel alert: The nickel-copper-nickel coating contains nickel. If redness occurs, immediately stop working with magnets and wear gloves.

Conscious usage

Be careful. Neodymium magnets attract from a distance and snap with huge force, often faster than you can react.

Compass and GPS

A strong magnetic field negatively affects the operation of magnetometers in phones and GPS navigation. Keep magnets close to a device to prevent breaking the sensors.

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