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HH 32x7.8 [M5] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370483
GTIN/EAN: 5906301814931
Diameter Ø
32 mm [±1 mm]
Height
7.8 mm [±1 mm]
Weight
37.8 g
Magnetization Direction
↑ axial
Load capacity
27.00 kg / 264.78 N
Coating
[NiCuNi] Nickel
17.96 ZŁ with VAT / pcs + price for transport
14.60 ZŁ net + 23% VAT / pcs
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Technical details - HH 32x7.8 [M5] / N38 - through hole magnetic holder
Specification / characteristics - HH 32x7.8 [M5] / N38 - through hole magnetic holder
| properties | values |
|---|---|
| Cat. no. | 370483 |
| GTIN/EAN | 5906301814931 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 7.8 mm [±1 mm] |
| Weight | 37.8 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 27.00 kg / 264.78 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 |
Other offers
![UMH 20x7x35 [M4] / N38 - magnetic holder with hook](https://cdn3.dhit.pl/graphics/products/umh-20x7x35-m4-hiz.jpg "UMH 20x7x35 [M4] / N38 - magnetic holder with hook")
Pros and cons of rare earth magnets.
Pros
- They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
- They are resistant to demagnetization induced by presence of other magnetic fields,
- A magnet with a metallic gold surface has better aesthetics,
- Magnets are distinguished by extremely high magnetic induction on the surface,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of custom forming as well as adapting to atypical applications,
- Fundamental importance in innovative solutions – they are utilized in hard drives, electric drive systems, medical equipment, as well as other advanced devices.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Disadvantages
- At strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- Due to limitations in creating nuts and complicated forms in magnets, we recommend using casing - magnetic mechanism.
- Possible danger to health – tiny shards of magnets can be dangerous, in case of ingestion, 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 complicate diagnosis medical in case of swallowing.
- Due to complex production process, their price is higher than average,
Pull force analysis
Maximum lifting force for a neodymium magnet – what contributes to it?
- on a base made of structural steel, optimally conducting the magnetic flux
- whose thickness is min. 10 mm
- characterized by even structure
- under conditions of gap-free contact (surface-to-surface)
- during pulling in a direction perpendicular to the mounting surface
- in temp. approx. 20°C
Key elements affecting lifting force
- Space between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
- Steel type – low-carbon steel attracts best. Higher carbon content reduce magnetic permeability and lifting capacity.
- Surface structure – the more even the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
- Thermal environment – temperature increase results in weakening of force. Check the maximum operating temperature for a given model.
Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the lifting capacity is smaller. In addition, even a slight gap between the magnet’s surface and the plate decreases the load capacity.
Warnings
Pinching danger
Risk of injury: The attraction force is so immense that it can cause blood blisters, pinching, and broken bones. Use thick gloves.
Cards and drives
Equipment safety: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, timepieces).
Immense force
Handle magnets with awareness. Their huge power can surprise even experienced users. Plan your moves and do not underestimate their power.
Thermal limits
Regular neodymium magnets (N-type) lose power when the temperature exceeds 80°C. The loss of strength is permanent.
Allergic reactions
Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If redness happens, cease working with magnets and wear gloves.
Swallowing risk
Absolutely store magnets away from children. Ingestion danger is high, and the consequences of magnets clamping inside the body are tragic.
Medical implants
For implant holders: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.
Impact on smartphones
Note: neodymium magnets produce a field that confuses sensitive sensors. Maintain a separation from your mobile, device, and GPS.
Do not drill into magnets
Powder generated during machining of magnets is flammable. Do not drill into magnets unless you are an expert.
Eye protection
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous 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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