Product on order Ships in 3-5 days

UMP 65x45 [M8] GW - search holder

search holder

Catalog no 210259

GTIN/EAN: 5906301813927

Diameter Ø

65 mm [±1 mm]

Height

45 mm [±1 mm]

Weight

1150 g

Load capacity

230.00 kg / 2255.53 N

Coating

[NiCuNi] Nickel

check technical specifications »

150.00 ZŁ with VAT / pcs + price for transport

121.95 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?
price from 1 pcs
121.95 ZŁ
150.00 ZŁ
price from 10 pcs
114.63 ZŁ
141.00 ZŁ
price from 25 pcs
107.32 ZŁ
132.00 ZŁ
Carbon Footprint – environmental impact GPSR Regulation – product safety
Do you have a hard time selecting?

Call us +48 888 99 98 98 if you prefer drop us a message via inquiry form the contact form page.
Strength as well as appearance of magnets can be estimated with our power calculator.

Orders placed before 14:00 will be shipped the same business day.

💡 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 details - UMP 65x45 [M8] GW - search holder

Specification / characteristics - UMP 65x45 [M8] GW - search holder

properties
properties values
Cat. no. 210259
GTIN/EAN 5906301813927
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 65 mm [±1 mm]
Height 45 mm [±1 mm]
Weight 1150 g
Load capacity ~ ? 230.00 kg / 2255.53 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%
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: 210259-2026
Measurement Calculator
Magnet pull force
Magnetic Induction
Simply fill in a single box, and the converter fill in everything else instantly.

Other deals

MPL 40x20x10 / N38 - lamellar magnet
Product on order Ships in 3-5 days

MPL 40x20x10 / N38 - lamellar magnet

31.00 ZŁ brutto / pcs
UMP 75x25 [M10x3] GW F200 PLATINIUM / N52 - search holder
Product on order Ships in 3-5 days

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

270.00 ZŁ brutto / pcs
MW 5x3 / N38 - cylindrical magnet
Product on order Ships in 3-5 days

MW 5x3 / N38 - cylindrical magnet

0.283 ZŁ brutto / pcs
UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread
Product on order Ships in 3-5 days

UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread

33.95 ZŁ brutto / pcs
For underwater searches, we recommend specialized holders from the GOLD series, designed for working in difficult conditions. This specific magnet ensures a laboratory lifting capacity of up to 230.00 kg, which translates into high effectiveness in water. The choice depends on whether you plan to throw from the shore (double-sided) or from a bridge (single-sided).
The 2xTwo-Side version is more versatile, allowing the eyelet to be mounted in two positions. Top mounting works well when fishing from a bridge, pier, or well (vertical technique). The double-sided version increases search efficiency by 100%.
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). 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). A full set usually contains: magnet, polypropylene rope with appropriate strength, protective gloves, hook, and carabiner. 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. 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. We recommend familiarizing yourself with current local regulations and heritage protection laws.
By choosing Dhit GOLD mounts, you get a product of a significantly higher standard and true magnetic power for the same market price.
A special technology of mounting the magnet in the protective cup builds a unified structure that dampens shocks while working on rough surfaces.
It is worth remembering that the same mount used by the side hook often has as little as a fraction of strength instead of the declared 200 kg. GOLD mounts guarantees honest data by stating the actual capabilities of the gear, so you avoid disappointment during treasure hunting.
{Unlike competitors importing from China, Dhit provides full support and real service assistance, which is crucial after the transaction. Don't risk it with unknown goods, it is better to choose proven gear that cares about the satisfaction of every user.

Strengths and weaknesses of Nd2Fe14B magnets.

Advantages

Besides their tremendous field intensity, neodymium magnets offer the following advantages:
  • They retain magnetic properties for around 10 years – the loss is just ~1% (based on simulations),
  • They possess excellent resistance to magnetic field loss due to external fields,
  • By using a shiny layer of nickel, the element presents an nice look,
  • Magnets are distinguished by very high magnetic induction on the surface,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Considering the potential of flexible molding and adaptation to specialized projects, NdFeB magnets can be produced in a broad palette of shapes and sizes, which makes them more universal,
  • Fundamental importance in electronics industry – they are utilized in mass storage devices, motor assemblies, medical equipment, as well as technologically advanced constructions.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Limitations

Cons of neodymium magnets and proposals for their use:
  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
  • Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • We recommend casing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to be problematic in diagnostics medical when they are in the body.
  • Due to neodymium price, their price exceeds standard values,

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what affects it?

The declared magnet strength concerns the maximum value, measured under ideal test conditions, namely:
  • using a base made of low-carbon steel, functioning as a ideal flux conductor
  • with a thickness no less than 10 mm
  • characterized by lack of roughness
  • without the slightest insulating layer between the magnet and steel
  • for force acting at a right angle (pull-off, not shear)
  • in neutral thermal conditions

Lifting capacity in real conditions – factors

Bear in mind that the application force may be lower depending on the following factors, in order of importance:
  • Gap between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Direction of force – highest force is available only during pulling at a 90° angle. The force required to slide of the magnet along the surface is typically many times lower (approx. 1/5 of the lifting capacity).
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Metal type – not every steel attracts identically. High carbon content worsen the attraction effect.
  • Base smoothness – the more even the plate, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was carried out 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 5 times. Moreover, even a small distance between the magnet’s surface and the plate decreases the load capacity.

Safety rules for work with neodymium magnets
Danger to pacemakers

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

Caution required

Use magnets consciously. Their powerful strength can surprise even professionals. Plan your moves and do not underestimate their power.

Compass and GPS

A strong magnetic field disrupts the functioning of magnetometers in phones and GPS navigation. Keep magnets close to a smartphone to prevent damaging the sensors.

Dust explosion hazard

Drilling and cutting of neodymium magnets poses a fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.

Serious injuries

Large magnets can break fingers in a fraction of a second. Never put your hand betwixt two strong magnets.

Heat warning

Watch the temperature. Exposing the magnet to high heat will destroy its magnetic structure and strength.

Shattering risk

Watch out for shards. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. Wear goggles.

Nickel allergy

Certain individuals experience a contact allergy to nickel, which is the typical protective layer for neodymium magnets. Extended handling can result in an allergic reaction. We recommend wear safety gloves.

Swallowing risk

NdFeB magnets are not intended for children. Eating several magnets can lead to them attracting across intestines, which poses a severe health hazard and requires urgent medical intervention.

Safe distance

Intense magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.

Danger! Need more info? Check our post: Are neodymium magnets dangerous?