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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
through hole magnetic holder
Catalog no 370479
GTIN/EAN: 5906301814894
Diameter Ø
36 mm [±1 mm]
Height
7.5 mm [±1 mm]
Weight
36 g
Magnetization Direction
↑ axial
Load capacity
26.00 kg / 254.97 N
Coating
[NiCuNi] Nickel
38.90 ZŁ with VAT / pcs + price for transport
31.63 ZŁ net + 23% VAT / pcs
bulk discounts:
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Physical properties - HH 36x7.5 [M6] / N38 - through hole magnetic holder
Specification / characteristics - HH 36x7.5 [M6] / N38 - through hole magnetic holder
| properties | values |
|---|---|
| Cat. no. | 370479 |
| GTIN/EAN | 5906301814894 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 36 mm [±1 mm] |
| Height | 7.5 mm [±1 mm] |
| Weight | 36 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 26.00 kg / 254.97 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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Strengths and weaknesses of Nd2Fe14B magnets.
Advantages
- Their strength is durable, and after approximately ten years it drops only by ~1% (theoretically),
- They retain their magnetic properties even under strong external field,
- In other words, due to the reflective finish of nickel, the element is aesthetically pleasing,
- The surface of neodymium magnets generates a maximum magnetic field – this is a key feature,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Possibility of exact modeling as well as adapting to atypical conditions,
- Versatile presence in high-tech industry – they are commonly used in HDD drives, electric motors, medical devices, also other advanced devices.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Limitations
- To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
- Limited ability of making nuts in the magnet and complex shapes - preferred is casing - magnetic holder.
- Health risk to health – tiny shards of magnets are risky, if swallowed, which becomes key in the context of child safety. Furthermore, small components of these devices are able to disrupt the diagnostic process medical after entering the body.
- With budget limitations the cost of neodymium magnets is a challenge,
Holding force characteristics
Breakaway strength of the magnet in ideal conditions – what affects it?
- on a base made of mild steel, perfectly concentrating the magnetic flux
- whose transverse dimension is min. 10 mm
- characterized by smoothness
- with total lack of distance (no paint)
- under axial application of breakaway force (90-degree angle)
- in neutral thermal conditions
Impact of factors on magnetic holding capacity in practice
- Distance (between the magnet and the metal), since even a tiny clearance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or debris).
- Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Material type – the best choice is pure iron steel. Hardened steels may attract less.
- Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
- Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).
Lifting capacity was assessed by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate lowers the lifting capacity.
Precautions when working with neodymium magnets
Maximum temperature
Do not overheat. NdFeB magnets are sensitive to heat. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).
Do not give to children
Strictly keep magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are tragic.
Mechanical processing
Drilling and cutting of neodymium magnets carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Danger to pacemakers
Warning for patients: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or request help to handle the magnets.
Keep away from electronics
A strong magnetic field interferes with the operation of magnetometers in phones and GPS navigation. Maintain magnets close to a device to avoid breaking the sensors.
Bone fractures
Large magnets can smash fingers instantly. Do not place your hand betwixt two strong magnets.
Nickel allergy
It is widely known that the nickel plating (standard magnet coating) is a potent allergen. If your skin reacts to metals, refrain from touching magnets with bare hands or select coated magnets.
Data carriers
Very strong magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Stay away of at least 10 cm.
Handling rules
Before starting, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.
Beware of splinters
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
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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