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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 specification - 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 |
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% |
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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Pros and cons of neodymium magnets.
Pros
- Their power is maintained, and after approximately 10 years it decreases only by ~1% (according to research),
- They are noted for resistance to demagnetization induced by external field influence,
- In other words, due to the glossy surface of gold, the element is aesthetically pleasing,
- Magnetic induction on the top side of the magnet remains impressive,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
- Thanks to freedom in designing and the capacity to modify to client solutions,
- Universal use in future technologies – they are used in hard drives, motor assemblies, precision medical tools, and multitasking production systems.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Cons
- Brittleness is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a strong case, which not only secures them against impacts but also increases their durability
- 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
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
- We suggest a housing - magnetic mount, due to difficulties in realizing nuts inside the magnet and complicated shapes.
- Health risk to health – tiny shards of magnets are risky, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small components of these devices can disrupt the diagnostic process medical after entering the body.
- Due to neodymium price, their price exceeds standard values,
Holding force characteristics
Best holding force of the magnet in ideal parameters – what affects it?
- on a block made of structural steel, effectively closing the magnetic flux
- possessing a thickness of at least 10 mm to avoid saturation
- with an polished touching surface
- with zero gap (no coatings)
- during detachment in a direction vertical to the plane
- at room temperature
Lifting capacity in practice – influencing factors
- Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
- Angle of force application – highest force is available only during perpendicular pulling. The force required to slide of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Material composition – different alloys attracts identically. High carbon content weaken the attraction effect.
- Smoothness – ideal contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Thermal factor – high temperature weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity testing was carried out on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under shearing force the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.
Safe handling of neodymium magnets
Physical harm
Risk of injury: The pulling power is so immense that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.
Mechanical processing
Combustion risk: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.
Warning for heart patients
Life threat: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.
Demagnetization risk
Standard neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. The loss of strength is permanent.
Handling guide
Before use, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.
Electronic hazard
Intense magnetic fields can erase data on payment cards, HDDs, and storage devices. Stay away of at least 10 cm.
Protective goggles
NdFeB magnets are sintered ceramics, which means they are prone to chipping. Clashing of two magnets will cause them cracking into small pieces.
This is not a toy
Neodymium magnets are not toys. Accidental ingestion of several magnets may result in them attracting across intestines, which poses a direct threat to life and requires urgent medical intervention.
Avoid contact if allergic
Certain individuals have a contact allergy to Ni, which is the typical protective layer for NdFeB magnets. Prolonged contact might lead to an allergic reaction. We suggest wear protective gloves.
Compass and GPS
Navigation devices and smartphones are extremely susceptible to magnetism. Close proximity with a strong magnet can permanently damage the internal compass in your phone.
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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