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HH 32x7.8 [M5] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370483
GTIN/EAN: 5906301814931
Diameter Ø
32 mm [±1 mm]
Height
7.8 mm [±1 mm]
Weight
37.8 g
Magnetization Direction
↑ axial
Load capacity
27.00 kg / 264.78 N
Coating
[NiCuNi] Nickel
17.96 ZŁ with VAT / pcs + price for transport
14.60 ZŁ net + 23% VAT / pcs
bulk discounts:
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Detailed specifications HH 32x7.8 [M5] / N38 - through hole magnetic holder
Specification / characteristics - HH 32x7.8 [M5] / N38 - through hole magnetic holder
| properties | values |
|---|---|
| Cat. no. | 370483 |
| GTIN/EAN | 5906301814931 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 7.8 mm [±1 mm] |
| Weight | 37.8 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 27.00 kg / 264.78 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 |
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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![HH 36x7.5 [M6] / N38 - through hole magnetic holder](https://cdn3.dhit.pl/graphics/products/hh-36x7.5-m6-bez.jpg "HH 36x7.5 [M6] / N38 - through hole magnetic holder")
Advantages and disadvantages of neodymium magnets.
Benefits
- They virtually do not lose power, because even after ten years the performance loss is only ~1% (based on calculations),
- Magnets perfectly protect themselves against demagnetization caused by foreign field sources,
- A magnet with a smooth nickel surface looks better,
- The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to flexibility in shaping and the ability to adapt to specific needs,
- Versatile presence in modern technologies – they are utilized in HDD drives, electric motors, precision medical tools, also industrial machines.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
- At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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 extremely resistant to heat
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- Limited possibility of producing nuts in the magnet and complicated shapes - recommended is a housing - mounting mechanism.
- Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these devices are able to complicate diagnosis medical after entering the body.
- Due to expensive raw materials, their price is relatively high,
Lifting parameters
Detachment force of the magnet in optimal conditions – what contributes to it?
- using a plate made of high-permeability steel, functioning as a magnetic yoke
- possessing a thickness of at least 10 mm to ensure full flux closure
- with an polished contact surface
- without any insulating layer between the magnet and steel
- for force applied at a right angle (pull-off, not shear)
- in stable room temperature
Lifting capacity in real conditions – factors
- Air gap (betwixt the magnet and the metal), since even a microscopic distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
- Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Plate thickness – too thin sheet does not accept the full field, causing part of the power to be lost to the other side.
- Steel type – mild steel gives the best results. Alloy admixtures reduce magnetic properties and holding force.
- Surface finish – full contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
- Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. In addition, even a small distance between the magnet and the plate lowers the holding force.
Safety rules for work with NdFeB magnets
Powerful field
Handle with care. Rare earth magnets attract from a long distance and snap with massive power, often quicker than you can move away.
Material brittleness
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
Magnetic media
Intense magnetic fields can erase data on credit cards, hard drives, and storage devices. Stay away of min. 10 cm.
Operating temperature
Standard neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.
Threat to navigation
An intense magnetic field negatively affects the functioning of compasses in smartphones and GPS navigation. Maintain magnets near a smartphone to avoid damaging the sensors.
Combustion hazard
Dust created during grinding of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.
Do not give to children
Neodymium magnets are not intended for children. Eating a few magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and requires immediate surgery.
Pinching danger
Danger of trauma: The attraction force is so immense that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.
Life threat
Medical warning: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.
Sensitization to coating
Studies show that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, avoid direct skin contact or choose encased magnets.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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14.99 ZŁ
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12.30 ZŁ
Płatność przy odbiorze (pobranie):
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Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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