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UMP 65x45 [M8]x2 GW / N38 - search holder
search holder
Catalog no 210348
GTIN/EAN: 5906301813996
Diameter Ø
65 mm [±1 mm]
Height
45 mm [±1 mm]
Weight
1170 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 as well as structure of neodymium magnets can be analyzed on our
our magnetic calculator.
Same-day processing for orders placed before 14:00.
💡 Guide: How to choose a decent magnet and not get ripped off?
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 - UMP 65x45 [M8]x2 GW / N38 - search holder
Specification / characteristics - UMP 65x45 [M8]x2 GW / N38 - search holder
| properties | values |
|---|---|
| Cat. no. | 210348 |
| GTIN/EAN | 5906301813996 |
| 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 | 1170 g |
| Load capacity ~ ? | 230.00 kg / 2255.53 N |
| Coating | [NiCuNi] Nickel |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N38
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 12.2-12.6 | kGs |
| remenance Br [min. - max.] ? | 1220-1260 | mT |
| coercivity bHc ? | 10.8-11.5 | kOe |
| coercivity bHc ? | 860-915 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 36-38 | BH max MGOe |
| energy density [min. - max.] ? | 287-303 | BH max KJ/m |
| max. temperature ? | ≤ 80 | °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 |
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other deals
Strengths as well as weaknesses of neodymium magnets.
Benefits
- They retain attractive force for almost ten years – the drop is just ~1% (based on simulations),
- They have excellent resistance to magnetism drop as a result of external magnetic sources,
- The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Magnetic induction on the working part of the magnet remains very high,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Thanks to flexibility in forming and the capacity to adapt to complex applications,
- Universal use in electronics industry – they are utilized in HDD drives, electric motors, precision medical tools, as well as multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in miniature devices
Weaknesses
- They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Limited possibility of producing threads in the magnet and complex forms - recommended is a housing - mounting mechanism.
- Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small components of these products are able to complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what it depends on?
- on a plate made of mild steel, optimally conducting the magnetic flux
- whose thickness reaches at least 10 mm
- with an polished contact surface
- with zero gap (without coatings)
- during pulling in a direction perpendicular to the mounting surface
- at temperature room level
Practical lifting capacity: influencing factors
- Distance – the presence of foreign body (rust, tape, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
- Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Steel grade – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
- Surface quality – the more even the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
- Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.
Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate reduces the holding force.
Safe handling of neodymium magnets
Do not underestimate power
Before starting, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Think ahead.
Implant safety
Warning for patients: Strong magnetic fields affect electronics. Maintain at least 30 cm distance or ask another person to handle the magnets.
Do not drill into magnets
Fire warning: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.
Electronic hazard
Avoid bringing magnets close to a wallet, computer, or TV. The magnetic field can destroy these devices and erase data from cards.
Crushing risk
Mind your fingers. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Be careful!
Maximum temperature
Keep cool. NdFeB magnets are sensitive to heat. If you need operation above 80°C, look for HT versions (H, SH, UH).
GPS and phone interference
GPS units and smartphones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can ruin the internal compass in your phone.
Warning for allergy sufferers
Certain individuals experience a sensitization to Ni, which is the standard coating for neodymium magnets. Frequent touching may cause skin redness. We strongly advise wear protective gloves.
This is not a toy
Strictly store magnets away from children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are life-threatening.
Risk of cracking
NdFeB magnets are ceramic materials, which means they are very brittle. Impact of two magnets will cause them shattering into small pieces.
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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