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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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Lifting power as well as appearance of a neodymium magnet can be tested using our
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Technical - 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 |
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other proposals
![SM 32x225 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-32x225-2xm8-dob.jpg "SM 32x225 [2xM8] / N42 - magnetic separator")
Pros as well as cons of Nd2Fe14B magnets.
Benefits
- They have stable power, and over around 10 years their performance decreases symbolically – ~1% (according to theory),
- They are resistant to demagnetization induced by external magnetic fields,
- The use of an refined coating of noble metals (nickel, gold, silver) causes the element to present itself better,
- Magnetic induction on the top side of the magnet remains exceptional,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures approaching 230°C and above...
- Thanks to versatility in forming and the capacity to adapt to complex applications,
- Versatile presence in modern industrial fields – they serve a role in magnetic memories, electromotive mechanisms, diagnostic systems, also technologically advanced constructions.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Disadvantages
- Brittleness is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a steel housing, which not only secures them against impacts but also raises their durability
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
- Limited ability of creating threads in the magnet and complicated shapes - preferred is cover - magnetic holder.
- Health risk related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Additionally, small elements of these products are able to be problematic in diagnostics medical after entering the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Pull force analysis
Magnetic strength at its maximum – what affects it?
- with the contact of a sheet made of low-carbon steel, ensuring maximum field concentration
- whose transverse dimension is min. 10 mm
- with a surface perfectly flat
- with total lack of distance (no impurities)
- for force acting at a right angle (in the magnet axis)
- at room temperature
Key elements affecting lifting force
- Gap between surfaces – every millimeter of distance (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
- Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Material type – ideal substrate is high-permeability steel. Cast iron may attract less.
- Surface condition – ground elements ensure maximum contact, which increases field saturation. Rough surfaces reduce efficiency.
- Temperature – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.
Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.
H&S for magnets
Choking Hazard
NdFeB magnets are not toys. Accidental ingestion of a few magnets may result in them connecting inside the digestive tract, which constitutes a direct threat to life and requires immediate surgery.
Power loss in heat
Regular neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.
Medical implants
Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.
Magnet fragility
Despite metallic appearance, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into hazardous fragments.
Mechanical processing
Drilling and cutting of neodymium magnets poses a fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Electronic devices
Very strong magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Stay away of min. 10 cm.
Magnetic interference
An intense magnetic field interferes with the operation of magnetometers in phones and GPS navigation. Maintain magnets near a device to avoid breaking the sensors.
Nickel allergy
Medical facts indicate that nickel (standard magnet coating) is a common allergen. If you have an allergy, avoid touching magnets with bare hands and choose encased magnets.
Respect the power
Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.
Pinching danger
Mind your fingers. Two powerful magnets will join immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!
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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