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UMH 32x8x46 [M6] / N38 - magnetic holder with hook
magnetic holder with hook
Catalog no 310427
GTIN/EAN: 5906301814566
Diameter Ø
32 mm [±1 mm]
Height
46 mm [±1 mm]
Height
8 mm [±1 mm]
Weight
53 g
Magnetization Direction
↑ axial
Load capacity
38.00 kg / 372.65 N
Coating
[NiCuNi] Nickel
22.14 ZŁ with VAT / pcs + price for transport
18.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical details - UMH 32x8x46 [M6] / N38 - magnetic holder with hook
Specification / characteristics - UMH 32x8x46 [M6] / N38 - magnetic holder with hook
| properties | values |
|---|---|
| Cat. no. | 310427 |
| GTIN/EAN | 5906301814566 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 46 mm [±1 mm] |
| Height | 8 mm [±1 mm] |
| Weight | 53 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 38.00 kg / 372.65 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 |
Material specification
| 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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Advantages as well as disadvantages of rare earth magnets.
Benefits
- They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
- They have excellent resistance to magnetic field loss as a result of external fields,
- The use of an refined finish of noble metals (nickel, gold, silver) causes the element to present itself better,
- Magnets are distinguished by maximum magnetic induction on the working surface,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of accurate shaping and optimizing to individual requirements,
- Significant place in future technologies – they serve a role in HDD drives, motor assemblies, medical equipment, and complex engineering applications.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
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 lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures 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 those in rubber or plastics, which secure oxidation as well as corrosion.
- We recommend cover - magnetic mechanism, due to difficulties in realizing nuts inside the magnet and complex shapes.
- Possible danger resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, tiny parts of these magnets can complicate diagnosis medical after entering the body.
- Due to neodymium price, their price is relatively high,
Lifting parameters
Maximum magnetic pulling force – what it depends on?
- with the use of a yoke made of special test steel, ensuring maximum field concentration
- with a thickness minimum 10 mm
- characterized by smoothness
- without any clearance between the magnet and steel
- under vertical application of breakaway force (90-degree angle)
- in temp. approx. 20°C
Determinants of lifting force in real conditions
- Distance – existence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
- Loading method – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Material type – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
- Smoothness – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
- Thermal environment – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the holding force is lower. In addition, even a small distance between the magnet’s surface and the plate decreases the load capacity.
Precautions when working with neodymium magnets
Impact on smartphones
A powerful magnetic field negatively affects the operation of magnetometers in smartphones and GPS navigation. Maintain magnets near a device to avoid breaking the sensors.
Combustion hazard
Dust generated during cutting of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.
This is not a toy
Absolutely keep magnets away from children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are tragic.
Medical implants
People with a ICD must keep an large gap from magnets. The magnetism can stop the operation of the life-saving device.
Magnetic media
Do not bring magnets near a wallet, computer, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.
Heat warning
Watch the temperature. Heating the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.
Avoid contact if allergic
It is widely known that nickel (standard magnet coating) is a strong allergen. For allergy sufferers, refrain from direct skin contact or choose coated magnets.
Crushing force
Protect your hands. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!
Protective goggles
Despite metallic appearance, neodymium is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
Respect the power
Use magnets with awareness. Their immense force can shock even professionals. Plan your moves and respect their power.
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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