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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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Strength and form of a neodymium magnet can be calculated with our
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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 |
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% |
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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Pros as well as cons of rare earth magnets.
Strengths
- They retain magnetic properties for around ten years – the drop is just ~1% (according to analyses),
- They have excellent resistance to magnetic field loss due to opposing magnetic fields,
- A magnet with a shiny gold surface has an effective appearance,
- The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
- 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...
- Thanks to versatility in constructing and the ability to modify to individual projects,
- Universal use in electronics industry – they find application in computer drives, motor assemblies, diagnostic systems, also modern systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Weaknesses
- At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Limited possibility of making threads in the magnet and complicated forms - preferred is cover - magnet mounting.
- Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. Additionally, tiny parts of these products can be problematic in diagnostics medical after entering the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Pull force analysis
Maximum holding power of the magnet – what affects it?
- using a plate made of high-permeability steel, functioning as a ideal flux conductor
- with a thickness minimum 10 mm
- with a surface free of scratches
- under conditions of gap-free contact (surface-to-surface)
- for force acting at a right angle (pull-off, not shear)
- at temperature room level
Key elements affecting lifting force
- Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Load vector – maximum parameter is reached only during perpendicular pulling. The resistance to sliding of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
- Material composition – not every steel attracts identically. Alloy additives worsen the attraction effect.
- Surface condition – ground elements ensure maximum contact, which increases field saturation. Rough surfaces reduce efficiency.
- Temperature – temperature increase causes a temporary drop of induction. Check the thermal limit for a given model.
Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a slight gap between the magnet and the plate reduces the holding force.
Precautions when working with NdFeB magnets
Safe operation
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.
Thermal limits
Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.
Phone sensors
Navigation devices and mobile phones are highly sensitive to magnetism. Direct contact with a strong magnet can decalibrate the internal compass in your phone.
Health Danger
Warning for patients: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or request help to handle the magnets.
Protect data
Data protection: Strong magnets can ruin data carriers and delicate electronics (heart implants, medical aids, mechanical watches).
Nickel coating and allergies
Studies show that nickel (the usual finish) is a potent allergen. For allergy sufferers, refrain from touching magnets with bare hands or select coated magnets.
Combustion hazard
Drilling and cutting of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Crushing force
Large magnets can smash fingers in a fraction of a second. Under no circumstances place your hand betwixt two strong magnets.
Risk of cracking
Watch out for shards. Magnets can fracture upon uncontrolled impact, launching shards into the air. We recommend safety glasses.
No play value
Neodymium magnets are not intended for children. Swallowing multiple magnets can lead to them attracting across intestines, which poses a severe health hazard and requires urgent medical intervention.
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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