NC NeoCube fi 5 mm kuleczki srebrne / N38 - neocube
neocube
Catalog no 120228
GTIN/EAN: 5906301812678
- Weight
- 145 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
49.99 zł with VAT / pcs + price for transport
40.64 zł net + 23% VAT / pcs
bulk discounts:
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Product card - NC NeoCube fi 5 mm kuleczki srebrne / N38 - neocube
Specification / characteristics - NC NeoCube fi 5 mm kuleczki srebrne / N38 - neocube
| properties | values |
|---|---|
| Cat. no. | 120228 |
| GTIN/EAN | 5906301812678 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 145 g |
| Magnetization Direction | ↑ axial |
| 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% |
Environmental data
| 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 Nd2Fe14B magnets.
Pros
- They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
- They possess excellent resistance to magnetism drop due to external magnetic sources,
- In other words, due to the reflective layer of nickel, the element gains visual value,
- They are known for high magnetic induction at the operating surface, which increases their power,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Considering the ability of accurate shaping and adaptation to unique needs, magnetic components can be produced in a variety of forms and dimensions, which makes them more universal,
- Universal use in future technologies – they serve a role in mass storage devices, electric motors, diagnostic systems, and technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which enables their usage in compact constructions
Disadvantages
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Limited ability of making nuts in the magnet and complex forms - preferred is casing - mounting mechanism.
- Possible danger related to microscopic parts of magnets are risky, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small elements of these devices can complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what affects it?
- on a base made of mild steel, perfectly concentrating the magnetic field
- possessing a thickness of at least 10 mm to ensure full flux closure
- with an ground contact surface
- under conditions of ideal adhesion (metal-to-metal)
- under perpendicular application of breakaway force (90-degree angle)
- in neutral thermal conditions
Practical lifting capacity: influencing factors
- Gap (betwixt the magnet and the metal), since even a microscopic distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, rust or dirt).
- Direction of force – maximum parameter is available only during perpendicular pulling. The shear force of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
- Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
- Steel grade – the best choice is high-permeability steel. Cast iron may attract less.
- Smoothness – full contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
- Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity was determined with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.
Precautions when working with neodymium magnets
Beware of splinters
NdFeB magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets leads to them cracking into small pieces.
Warning for heart patients
Life threat: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.
Keep away from computers
Do not bring magnets close to a wallet, computer, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.
Precision electronics
Remember: rare earth magnets generate a field that confuses sensitive sensors. Maintain a safe distance from your mobile, tablet, and navigation systems.
Adults only
These products are not toys. Swallowing several magnets may result in them attracting across intestines, which poses a severe health hazard and necessitates urgent medical intervention.
Thermal limits
Keep cool. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).
Nickel coating and allergies
Studies show that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, avoid touching magnets with bare hands or opt for coated magnets.
Handling guide
Handle magnets with awareness. Their immense force can surprise even experienced users. Be vigilant and respect their force.
Machining danger
Dust produced during grinding of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Crushing risk
Large magnets can break fingers in a fraction of a second. Under no circumstances put your hand between two strong magnets.
