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HH 16x5.3 [M3] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370480
GTIN/EAN: 5906301814900
Diameter Ø
16 mm [±1 mm]
Height
5.3 mm [±1 mm]
Weight
6.4 g
Magnetization Direction
↑ axial
Load capacity
4.00 kg / 39.23 N
Coating
[NiCuNi] Nickel
3.32 ZŁ with VAT / pcs + price for transport
2.70 ZŁ net + 23% VAT / pcs
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Technical details - HH 16x5.3 [M3] / N38 - through hole magnetic holder
Specification / characteristics - HH 16x5.3 [M3] / N38 - through hole magnetic holder
| properties | values |
|---|---|
| Cat. no. | 370480 |
| GTIN/EAN | 5906301814900 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 16 mm [±1 mm] |
| Height | 5.3 mm [±1 mm] |
| Weight | 6.4 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 4.00 kg / 39.23 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% |
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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Strengths and weaknesses of Nd2Fe14B magnets.
Advantages
- They have unchanged lifting capacity, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
- Neodymium magnets are highly resistant to loss of magnetic properties caused by external field sources,
- By using a decorative coating of silver, the element gains an aesthetic look,
- Magnetic induction on the working part of the magnet remains impressive,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures approaching 230°C and above...
- Possibility of individual shaping as well as adapting to precise requirements,
- Universal use in modern industrial fields – they are utilized in hard drives, motor assemblies, medical devices, and technologically advanced constructions.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Disadvantages
- They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (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
- They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Limited ability of making threads in the magnet and complicated shapes - recommended is cover - magnetic holder.
- Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these products are able to be problematic in diagnostics medical in case of swallowing.
- Due to neodymium price, their price is higher than average,
Lifting parameters
Maximum lifting capacity of the magnet – what contributes to it?
- with the use of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
- whose transverse dimension is min. 10 mm
- with an polished contact surface
- with total lack of distance (no coatings)
- for force applied at a right angle (pull-off, not shear)
- at ambient temperature room level
Lifting capacity in practice – influencing factors
- Gap between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
- Base massiveness – insufficiently thick plate does not close the flux, causing part of the flux to be lost into the air.
- Steel type – low-carbon steel attracts best. Alloy steels reduce magnetic properties and holding force.
- Base smoothness – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
- Temperature – temperature increase causes a temporary drop of force. Check the maximum operating temperature 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 holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.
Precautions when working with NdFeB magnets
Danger to pacemakers
Patients with a heart stimulator must keep an safe separation from magnets. The magnetism can stop the functioning of the life-saving device.
Keep away from computers
Device Safety: Strong magnets can ruin data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).
Skin irritation risks
It is widely known that nickel (standard magnet coating) is a common allergen. If your skin reacts to metals, avoid touching magnets with bare hands or opt for encased magnets.
Do not drill into magnets
Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this risks ignition.
Fragile material
Despite metallic appearance, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Caution required
Before starting, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.
Pinching danger
Big blocks can smash fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.
Product not for children
Only for adults. Tiny parts can be swallowed, leading to intestinal necrosis. Store out of reach of children and animals.
Power loss in heat
Regular neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.
Keep away from electronics
A strong magnetic field disrupts the functioning of magnetometers in smartphones and navigation systems. Keep magnets close to a smartphone to avoid breaking the sensors.
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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