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![HH 42x8.8 [M6] / N38 - through hole magnetic holder](https://cdn3.dhit.pl/graphics/products/hh-42x8.8-m6-hin.jpg)
HH 42x8.8 [M6] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370484
GTIN/EAN: 5906301814948
Diameter Ø
42 mm [±1 mm]
Height
8.8 mm [±1 mm]
Weight
75.2 g
Magnetization Direction
↑ axial
Load capacity
55.00 kg / 539.37 N
Coating
[NiCuNi] Nickel
29.89 ZŁ with VAT / pcs + price for transport
24.30 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical of the product - HH 42x8.8 [M6] / N38 - through hole magnetic holder
Specification / characteristics - HH 42x8.8 [M6] / N38 - through hole magnetic holder
| properties | values |
|---|---|
| Cat. no. | 370484 |
| GTIN/EAN | 5906301814948 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 42 mm [±1 mm] |
| Height | 8.8 mm [±1 mm] |
| Weight | 75.2 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 55.00 kg / 539.37 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% |
Environmental data
| 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 Nd2Fe14B magnets.
Pros
- They retain attractive force for around 10 years – the loss is just ~1% (according to analyses),
- They are resistant to demagnetization induced by presence of other magnetic fields,
- Thanks to the elegant finish, the surface of nickel, gold, or silver-plated gives an professional appearance,
- Magnetic induction on the surface of the magnet remains impressive,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
- Thanks to modularity in shaping and the capacity to modify to client solutions,
- Fundamental importance in high-tech industry – they are utilized in HDD drives, electric drive systems, diagnostic systems, also complex engineering applications.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Disadvantages
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets lose their strength 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 stability even at temperatures up to 230°C
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- We recommend a housing - magnetic holder, due to difficulties in realizing nuts inside the magnet and complicated shapes.
- Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which becomes key in the aspect of protecting the youngest. Additionally, small elements of these magnets are able to disrupt the diagnostic process medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Magnetic strength at its maximum – what contributes to it?
- on a block made of mild steel, perfectly concentrating the magnetic field
- possessing a massiveness of at least 10 mm to avoid saturation
- with a plane free of scratches
- with total lack of distance (no paint)
- under vertical force vector (90-degree angle)
- at room temperature
Magnet lifting force in use – key factors
- Air gap (between the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
- Base massiveness – too thin sheet does not close the flux, causing part of the power to be lost into the air.
- Plate material – low-carbon steel attracts best. Alloy admixtures reduce magnetic properties and lifting capacity.
- Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
- Temperature – heating the magnet causes a temporary drop of force. Check the thermal limit for a given model.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.
Safe handling of neodymium magnets
Product not for children
NdFeB magnets are not toys. Swallowing multiple magnets may result in them pinching intestinal walls, which constitutes a direct threat to life and requires urgent medical intervention.
Immense force
Use magnets with awareness. Their powerful strength can shock even professionals. Be vigilant and respect their power.
Pinching danger
Risk of injury: The pulling power is so immense that it can result in hematomas, crushing, and broken bones. Protective gloves are recommended.
Nickel allergy
A percentage of the population suffer from a sensitization to nickel, which is the typical protective layer for neodymium magnets. Frequent touching might lead to an allergic reaction. It is best to use protective gloves.
Protect data
Equipment safety: Neodymium magnets can ruin payment cards and sensitive devices (heart implants, medical aids, mechanical watches).
GPS and phone interference
A strong magnetic field disrupts the operation of compasses in phones and GPS navigation. Maintain magnets close to a device to prevent breaking the sensors.
Permanent damage
Avoid heat. Neodymium magnets are sensitive to heat. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).
Dust is flammable
Dust generated during cutting of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.
Health Danger
People with a ICD should maintain an safe separation from magnets. The magnetic field can interfere with the functioning of the life-saving device.
Eye protection
NdFeB magnets are ceramic materials, meaning they are prone to chipping. Clashing of two magnets leads to 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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