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AM ucho [M8] - magnetic accessories
magnetic accessories
Catalog no 080268
GTIN/EAN: 5906301812470
Weight
53 g
Load capacity
240.00 kg / 2353.60 N
4.92 ZŁ with VAT / pcs + price for transport
4.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical specification - AM ucho [M8] - magnetic accessories
Specification / characteristics - AM ucho [M8] - magnetic accessories
| properties | values |
|---|---|
| Cat. no. | 080268 |
| GTIN/EAN | 5906301812470 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 53 g |
| Load capacity ~ ? | 240.00 kg / 2353.60 N |
| Manufacturing Tolerance | ±1 mm |
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 Nd2Fe14B magnets.
Pros
- Their magnetic field remains stable, and after around ten years it decreases only by ~1% (according to research),
- They maintain their magnetic properties even under strong external field,
- In other words, due to the glossy finish of nickel, the element looks attractive,
- Neodymium magnets ensure maximum magnetic induction on a their surface, which increases force concentration,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Thanks to flexibility in forming and the capacity to adapt to unusual requirements,
- Universal use in advanced technology sectors – they find application in computer drives, electromotive mechanisms, advanced medical instruments, as well as modern systems.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Limitations
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
- Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Magnets exposed to a humid environment can rust. Therefore when using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
- Limited possibility of producing nuts in the magnet and complicated shapes - preferred is a housing - mounting mechanism.
- Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that small components of these magnets are able to complicate diagnosis medical when they are in the body.
- With mass production the cost of neodymium magnets is a challenge,
Pull force analysis
Highest magnetic holding force – what it depends on?
- with the contact of a yoke made of low-carbon steel, ensuring full magnetic saturation
- possessing a massiveness of at least 10 mm to ensure full flux closure
- characterized by lack of roughness
- under conditions of no distance (surface-to-surface)
- under axial application of breakaway force (90-degree angle)
- at standard ambient temperature
Magnet lifting force in use – key factors
- Clearance – existence of foreign body (rust, dirt, air) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of nominal force).
- Steel thickness – too thin steel causes magnetic saturation, causing part of the flux to be wasted to the other side.
- Metal type – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
- Surface quality – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
- Heat – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, however under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.
Precautions when working with neodymium magnets
Keep away from computers
Equipment safety: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, hearing aids, timepieces).
ICD Warning
Patients with a heart stimulator have to maintain an large gap from magnets. The magnetic field can disrupt the operation of the implant.
Compass and GPS
A powerful magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Do not bring magnets near a device to prevent damaging the sensors.
Bone fractures
Big blocks can smash fingers instantly. Under no circumstances put your hand between two strong magnets.
Danger to the youngest
Product intended for adults. Tiny parts pose a choking risk, leading to intestinal necrosis. Keep out of reach of children and animals.
Respect the power
Handle with care. Neodymium magnets act from a long distance and snap with massive power, often quicker than you can react.
Fragile material
Beware of splinters. Magnets can fracture upon violent connection, launching shards into the air. We recommend safety glasses.
Mechanical processing
Dust created during machining of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.
Operating temperature
Standard neodymium magnets (N-type) lose power when the temperature goes above 80°C. Damage is permanent.
Skin irritation risks
It is widely known that nickel (the usual finish) is a common allergen. For allergy sufferers, refrain from direct skin contact and choose coated magnets.
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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