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HH 42x8.8 [M6] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370484
GTIN/EAN: 5906301814948
Diameter Ø
42 mm [±1 mm]
Height
8.8 mm [±1 mm]
Weight
75.2 g
Magnetization Direction
↑ axial
Load capacity
55.00 kg / 539.37 N
Coating
[NiCuNi] Nickel
29.89 ZŁ with VAT / pcs + price for transport
24.30 ZŁ net + 23% VAT / pcs
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Product card - HH 42x8.8 [M6] / N38 - through hole magnetic holder
Specification / characteristics - HH 42x8.8 [M6] / N38 - through hole magnetic holder
| properties | values |
|---|---|
| Cat. no. | 370484 |
| GTIN/EAN | 5906301814948 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 42 mm [±1 mm] |
| Height | 8.8 mm [±1 mm] |
| Weight | 75.2 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 55.00 kg / 539.37 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 |
Other deals
Pros as well as cons of rare earth magnets.
Benefits
- Their power remains stable, and after approximately ten years it decreases only by ~1% (theoretically),
- Magnets effectively resist against loss of magnetization caused by external fields,
- In other words, due to the aesthetic layer of gold, the element is aesthetically pleasing,
- Magnets are distinguished by excellent magnetic induction on the outer layer,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for action at temperatures approaching 230°C and above...
- Thanks to flexibility in constructing and the ability to customize to specific needs,
- Fundamental importance in future technologies – they are used in HDD drives, electric drive systems, medical devices, also complex engineering applications.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Limitations
- At very strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Limited ability of creating threads in the magnet and complicated shapes - preferred is a housing - magnet mounting.
- Potential hazard resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these products are able to disrupt the diagnostic process medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Lifting parameters
Magnetic strength at its maximum – what contributes to it?
- on a plate made of structural steel, optimally conducting the magnetic flux
- whose thickness is min. 10 mm
- characterized by smoothness
- with direct contact (no impurities)
- under perpendicular force direction (90-degree angle)
- in stable room temperature
What influences lifting capacity in practice
- Air gap (betwixt the magnet and the metal), since even a very small distance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to varnish, rust or debris).
- Load vector – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the surface is usually several times smaller (approx. 1/5 of the lifting capacity).
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Metal type – different alloys reacts the same. High carbon content weaken the attraction effect.
- Surface condition – smooth surfaces guarantee perfect abutment, which increases field saturation. Rough surfaces weaken the grip.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity testing was carried out on a smooth plate of suitable thickness, under perpendicular forces, however 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 lowers the load capacity.
Precautions when working with NdFeB magnets
Medical implants
Medical warning: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.
Keep away from computers
Powerful magnetic fields can erase data on credit cards, HDDs, and other magnetic media. Keep a distance of at least 10 cm.
Handling rules
Use magnets consciously. Their powerful strength can surprise even professionals. Stay alert and do not underestimate their force.
Sensitization to coating
Certain individuals experience a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Extended handling can result in dermatitis. We recommend wear safety gloves.
Impact on smartphones
Navigation devices and mobile phones are extremely sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Operating temperature
Do not overheat. Neodymium magnets are sensitive to temperature. If you require resistance above 80°C, ask us about HT versions (H, SH, UH).
Dust explosion hazard
Combustion risk: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.
Bodily injuries
Big blocks can break fingers in a fraction of a second. Never place your hand betwixt two attracting surfaces.
Do not give to children
Absolutely store magnets away from children. Choking hazard is high, and the consequences of magnets connecting inside the body are fatal.
Protective goggles
NdFeB magnets are sintered ceramics, which means they are prone to chipping. Clashing of two magnets will cause them breaking into shards.
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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