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AM ucho małe [M8] - magnetic accessories
magnetic accessories
Catalog no 080345
GTIN/EAN: 5906301812487
Weight
27 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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Strength as well as form of a neodymium magnet can be checked on our
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Technical of the product - AM ucho małe [M8] - magnetic accessories
Specification / characteristics - AM ucho małe [M8] - magnetic accessories
| properties | values |
|---|---|
| Cat. no. | 080345 |
| GTIN/EAN | 5906301812487 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 27 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 |
Material specification
| 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 |
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Strengths as well as weaknesses of Nd2Fe14B magnets.
Advantages
- They have constant strength, and over around 10 years their attraction force decreases symbolically – ~1% (according to theory),
- They are noted for resistance to demagnetization induced by external disturbances,
- The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- They are known for high magnetic induction at the operating surface, making them more effective,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to the possibility of flexible molding and adaptation to unique needs, neodymium magnets can be modeled in a broad palette of shapes and sizes, which expands the range of possible applications,
- Huge importance in modern industrial fields – they find application in computer drives, motor assemblies, advanced medical instruments, as well as modern systems.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons
- They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
- Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- Limited ability of creating nuts in the magnet and complicated forms - preferred is cover - mounting mechanism.
- Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these products can disrupt the diagnostic process medical in case of swallowing.
- With large orders the cost of neodymium magnets is a challenge,
Holding force characteristics
Best holding force of the magnet in ideal parameters – what contributes to it?
- on a plate made of structural steel, effectively closing the magnetic flux
- whose thickness equals approx. 10 mm
- with an polished contact surface
- without the slightest insulating layer between the magnet and steel
- under axial force vector (90-degree angle)
- at temperature room level
Magnet lifting force in use – key factors
- Air gap (between the magnet and the plate), since even a tiny distance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to varnish, corrosion or debris).
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
- Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
- Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
- Surface quality – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
- Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently damage the magnet.
Lifting capacity was determined by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet and the plate lowers the lifting capacity.
H&S for magnets
Beware of splinters
Despite the nickel coating, neodymium is delicate and not impact-resistant. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Bodily injuries
Mind your fingers. Two large magnets will join instantly with a force of several hundred kilograms, destroying everything in their path. Be careful!
Medical interference
Health Alert: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.
Safe operation
Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Think ahead.
Operating temperature
Monitor thermal conditions. Heating the magnet to high heat will ruin its properties and pulling force.
Mechanical processing
Combustion risk: Neodymium dust is explosive. Do not process magnets without safety gear as this may cause fire.
Electronic hazard
Very strong magnetic fields can corrupt files on payment cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.
Do not give to children
Neodymium magnets are not intended for children. Accidental ingestion of multiple magnets may result in them pinching intestinal walls, which poses a direct threat to life and requires immediate surgery.
Keep away from electronics
GPS units and smartphones are highly susceptible to magnetism. Close proximity with a strong magnet can ruin the sensors in your phone.
Skin irritation risks
Some people experience a hypersensitivity to Ni, which is the typical protective layer for NdFeB magnets. Prolonged contact may cause a rash. We recommend wear protective gloves.
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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