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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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Parameters along with structure of a magnet can be reviewed with our
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Same-day shipping for orders placed before 14:00.
💡 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 parameters - 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 |
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 |
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Pros and cons of rare earth magnets.
Strengths
- They have stable power, and over nearly 10 years their performance decreases symbolically – ~1% (in testing),
- They possess excellent resistance to magnetism drop as a result of external magnetic sources,
- The use of an refined layer of noble metals (nickel, gold, silver) causes the element to look better,
- Magnets have very high magnetic induction on the outer side,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Possibility of accurate modeling and adjusting to concrete conditions,
- Huge importance in high-tech industry – they are utilized in data components, motor assemblies, diagnostic systems, as well as technologically advanced constructions.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
- 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 and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- Due to limitations in producing nuts and complex shapes in magnets, we propose using a housing - magnetic mount.
- Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the aspect of protecting the youngest. Furthermore, tiny parts of these magnets can complicate diagnosis medical after entering the body.
- Due to expensive raw materials, their price is relatively high,
Holding force characteristics
Maximum magnetic pulling force – what affects it?
- on a block made of mild steel, optimally conducting the magnetic flux
- possessing a massiveness of minimum 10 mm to ensure full flux closure
- with an ideally smooth touching surface
- under conditions of ideal adhesion (metal-to-metal)
- during pulling in a direction perpendicular to the plane
- in stable room temperature
Determinants of lifting force in real conditions
- Gap (between the magnet and the metal), as even a very small distance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Metal type – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
- Surface finish – full contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
- Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, however under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet and the plate reduces the lifting capacity.
Safe handling of NdFeB magnets
Eye protection
Beware of splinters. Magnets can explode upon violent connection, launching sharp fragments into the air. Eye protection is mandatory.
Do not overheat magnets
Regular neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. The loss of strength is permanent.
Combustion hazard
Dust produced during grinding of magnets is combustible. Do not drill into magnets unless you are an expert.
Threat to electronics
Avoid bringing magnets near a wallet, computer, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.
Keep away from electronics
A powerful magnetic field interferes with the operation of compasses in smartphones and GPS navigation. Keep magnets near a device to avoid damaging the sensors.
Skin irritation risks
Medical facts indicate that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, refrain from direct skin contact and select encased magnets.
Respect the power
Before use, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.
Pacemakers
For implant holders: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or ask another person to work with the magnets.
Finger safety
Big blocks can crush fingers instantly. Under no circumstances place your hand between two attracting surfaces.
Adults only
NdFeB magnets are not suitable for play. Eating a few magnets can lead to them connecting inside the digestive tract, which constitutes a critical condition and requires immediate surgery.
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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