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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
150.00 ZŁ with VAT / pcs + price for transport
121.95 ZŁ net + 23% VAT / pcs
bulk discounts:
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Force and appearance of neodymium magnets can be analyzed with our
force 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!
Physical properties - UMP 65x45 [M8] GW - search holder
Specification / characteristics - UMP 65x45 [M8] GW - search holder
| properties | values |
|---|---|
| Cat. no. | 210259 |
| GTIN/EAN | 5906301813927 |
| Production/Distribution | Dhit sp. z o.o. |
| 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
| 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 |
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 |
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Pros and cons of neodymium magnets.
Pros
- They do not lose strength, even over approximately ten years – the reduction in strength is only ~1% (according to tests),
- They maintain their magnetic properties even under external field action,
- A magnet with a shiny nickel surface is more attractive,
- The surface of neodymium magnets generates a strong 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 exact machining as well as modifying to complex requirements,
- Universal use in advanced technology sectors – they are utilized in HDD drives, electric drive systems, diagnostic systems, also other advanced devices.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Weaknesses
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a special holder, which not only protects them against impacts but also raises their durability
- Neodymium magnets demagnetize 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
- They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- We suggest a housing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated shapes.
- Potential hazard resulting from small fragments of magnets pose a threat, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these devices can disrupt the diagnostic process medical in case of swallowing.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities
Pull force analysis
Highest magnetic holding force – what contributes to it?
- on a block made of structural steel, effectively closing the magnetic field
- with a thickness minimum 10 mm
- characterized by smoothness
- with total lack of distance (without paint)
- during pulling in a direction vertical to the plane
- in temp. approx. 20°C
Impact of factors on magnetic holding capacity in practice
- Distance (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
- Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of maximum force).
- Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Steel type – low-carbon steel gives the best results. Alloy admixtures reduce magnetic permeability and holding force.
- Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
- Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was determined with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.
Warnings
Hand protection
Pinching hazard: The pulling power is so great that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.
Conscious usage
Use magnets with awareness. Their immense force can surprise even professionals. Be vigilant and respect their force.
Swallowing risk
Strictly keep magnets away from children. Risk of swallowing is high, and the effects of magnets connecting inside the body are tragic.
Allergic reactions
Medical facts indicate that the nickel plating (the usual finish) is a strong allergen. If your skin reacts to metals, avoid touching magnets with bare hands and choose encased magnets.
Fire warning
Dust produced during grinding of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.
GPS Danger
An intense magnetic field negatively affects the operation of compasses in smartphones and GPS navigation. Maintain magnets close to a device to prevent damaging the sensors.
Cards and drives
Device Safety: Strong magnets can damage payment cards and sensitive devices (heart implants, medical aids, mechanical watches).
Heat sensitivity
Do not overheat. NdFeB magnets are susceptible to heat. If you need operation above 80°C, inquire about HT versions (H, SH, UH).
Magnet fragility
Beware of splinters. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.
Pacemakers
Life threat: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
InPost Paczkomaty 24/7
Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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