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HH 16x5.3 [M3] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370480
GTIN/EAN: 5906301814900
Diameter Ø
16 mm [±1 mm]
Height
5.3 mm [±1 mm]
Weight
6.4 g
Magnetization Direction
↑ axial
Load capacity
4.00 kg / 39.23 N
Coating
[NiCuNi] Nickel
3.32 ZŁ with VAT / pcs + price for transport
2.70 ZŁ net + 23% VAT / pcs
bulk discounts:
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Lifting power as well as form of magnets can be analyzed with our
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Technical specification of the product - HH 16x5.3 [M3] / N38 - through hole magnetic holder
Specification / characteristics - HH 16x5.3 [M3] / N38 - through hole magnetic holder
| properties | values |
|---|---|
| Cat. no. | 370480 |
| GTIN/EAN | 5906301814900 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 16 mm [±1 mm] |
| Height | 5.3 mm [±1 mm] |
| Weight | 6.4 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 4.00 kg / 39.23 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 |
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Advantages and disadvantages of neodymium magnets.
Benefits
- They have stable power, and over nearly 10 years their attraction force decreases symbolically – ~1% (according to theory),
- Neodymium magnets remain extremely resistant to demagnetization caused by external interference,
- The use of an refined layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- They are known for high magnetic induction at the operating surface, which affects their effectiveness,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
- Thanks to flexibility in designing and the ability to modify to specific needs,
- Huge importance in advanced technology sectors – they are used in data components, electromotive mechanisms, advanced medical instruments, and industrial machines.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons
- To avoid cracks upon strong impacts, 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 strength at high temperatures. To prevent this, we advise 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 those in rubber or plastics, which prevent oxidation as well as corrosion.
- Limited ability of producing threads in the magnet and complex shapes - preferred is cover - magnet mounting.
- Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the aspect of protecting the youngest. It is also worth noting that small elements of these magnets are able to disrupt the diagnostic process medical when they are in the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Pull force analysis
Maximum lifting capacity of the magnet – what affects it?
- with the application of a yoke made of low-carbon steel, ensuring maximum field concentration
- possessing a massiveness of min. 10 mm to avoid saturation
- with a surface perfectly flat
- with total lack of distance (no paint)
- for force applied at a right angle (pull-off, not shear)
- at conditions approx. 20°C
Impact of factors on magnetic holding capacity in practice
- Distance (between the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to varnish, rust or debris).
- Load vector – maximum parameter is available only during perpendicular pulling. The force required to slide of the magnet along the surface is standardly many times smaller (approx. 1/5 of the lifting capacity).
- Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
- Steel type – mild steel attracts best. Higher carbon content lower magnetic properties and lifting capacity.
- Surface finish – full contact is possible only on polished steel. Rough texture create air cushions, weakening the magnet.
- Temperature influence – hot environment reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a small distance between the magnet and the plate decreases the lifting capacity.
Safety rules for work with NdFeB magnets
GPS Danger
Navigation devices and smartphones are extremely sensitive to magnetism. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Permanent damage
Do not overheat. NdFeB magnets are sensitive to heat. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).
Nickel allergy
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If redness occurs, cease working with magnets and wear gloves.
Caution required
Exercise caution. Neodymium magnets act from a distance and connect with massive power, often quicker than you can move away.
Fire risk
Fire hazard: Neodymium dust is explosive. Avoid machining magnets in home conditions as this risks ignition.
Danger to the youngest
Always store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are life-threatening.
Health Danger
Warning for patients: Powerful magnets affect electronics. Keep at least 30 cm distance or request help to handle the magnets.
Threat to electronics
Equipment safety: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).
Bone fractures
Big blocks can break fingers in a fraction of a second. Under no circumstances place your hand between two strong magnets.
Fragile material
Neodymium magnets are ceramic materials, meaning they are very brittle. Impact of two magnets will cause them shattering into small 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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