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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
see parameters »

8.54 zł net / pcs

10.50 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

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Frequently asked questions

How much will a magnetic holder hold in practice?
The catalogue value assumes full contact with smooth steel at least 10 mm thick and a perpendicular pull. Thinner sheet, paint, rust and surface irregularities reduce it considerably: on 1 mm sheet about half remains. Lifting and vertical mounting call for an additional safety margin.
Will a holder work on stainless steel?
Not on austenitic grades 304 and 316 — they are effectively non-magnetic. It will not work on aluminium, copper or brass either. Those materials need a mechanical gripper.
Which coating for which conditions?
Nickel-copper-nickel (NiCuNi) is the standard and covers most applications. Epoxy is used for damp environments and outdoor work, zinc is sufficient for dry interiors. Holders in a steel housing or in rubber also protect the magnet against impact.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

Order by 14:00 and we’ll ship today!

💡 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!

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 310 °C
Curie Temperature TF 590 °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 and environmental data

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
Quick Unit Converter

Magnet pull force

Field Strength

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It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. It is equipment that can handle pulling heavy and silted objects from the river bottom. 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. 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.
Most of our starter kits are complete and ready to use. 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. 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. It is worth acting responsibly, cleaning up after yourself, and caring for the environment by removing fished-out scrap.
Unlike other brands, Dhit uses the highest quality materials, which translates into a better results during every trip to the water.
Most magnets on the market have thin casings that deform during the first hard impact against concrete or rocks.
It is worth remembering that the identical magnet used by the lateral point often has only a fraction of strength instead of the declared 200 kg. Crucially, in the web, it is hard to find videos testing the real side-pull force of other brands on the lateral attachment.
{Unlike anonymous sellers, Dhit provides expert advice and instant warranty help, which gives peace of mind after the purchase. Every mount is individually inspected before delivery, which guarantees that you receive equipment of the defect-free.

Pros as well as cons of rare earth magnets.

Benefits

Besides their immense magnetic power, neodymium magnets offer the following advantages:
  • They have unchanged lifting capacity, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
  • They are extremely resistant to demagnetization induced by external disturbances,
  • By using a decorative coating of nickel, the element acquires an professional look,
  • Magnetic induction on the working layer of the magnet remains maximum,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Due to the option of flexible molding and customization to custom solutions, magnetic components can be produced in a wide range of forms and dimensions, which increases their versatility,
  • Huge importance in high-tech industry – they serve a role in hard drives, motor assemblies, advanced medical instruments, and other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

What to avoid - cons of neodymium magnets: application proposals
  • To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 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 prevent oxidation and corrosion.
  • Limited ability of producing threads in the magnet and complicated shapes - preferred is cover - magnetic holder.
  • Health risk related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the context of child safety. It is also worth noting that tiny parts of these magnets are able to complicate diagnosis medical when they are in the body.
  • With mass production the cost of neodymium magnets is a challenge,

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

Information about lifting capacity was determined for ideal contact conditions, including:
  • using a base made of high-permeability steel, acting as a ideal flux conductor
  • with a thickness no less than 10 mm
  • characterized by lack of roughness
  • under conditions of no distance (metal-to-metal)
  • during detachment in a direction vertical to the plane
  • at conditions approx. 20°C

What influences lifting capacity in practice

Real force impacted by specific conditions, including (from priority):
  • Gap between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
  • Steel type – low-carbon steel attracts best. Alloy steels reduce magnetic properties and lifting capacity.
  • Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet and the plate reduces the holding force.

H&S for magnets
Sensitization to coating

Allergy Notice: The nickel-copper-nickel coating contains nickel. If skin irritation happens, immediately stop handling magnets and use protective gear.

Magnetic interference

Be aware: rare earth magnets generate a field that confuses precision electronics. Keep a safe distance from your phone, device, and GPS.

Fire warning

Dust created during cutting of magnets is combustible. Do not drill into magnets unless you are an expert.

Bone fractures

Large magnets can crush fingers in a fraction of a second. Under no circumstances place your hand betwixt two attracting surfaces.

Demagnetization risk

Regular neodymium magnets (N-type) lose power when the temperature goes above 80°C. This process is irreversible.

Risk of cracking

Neodymium magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets will cause them cracking into shards.

Health Danger

Patients with a pacemaker should keep an large gap from magnets. The magnetism can stop the functioning of the life-saving device.

Caution required

Handle magnets consciously. Their immense force can shock even professionals. Be vigilant and do not underestimate their force.

Product not for children

These products are not toys. Eating a few magnets may result in them pinching intestinal walls, which constitutes a severe health hazard and requires urgent medical intervention.

Electronic hazard

Powerful magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.

Attention! Want to know more? Check our post: Why are neodymium magnets dangerous?