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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 structure of magnetic components can be verified using our
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Technical parameters 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Pros as well as cons of rare earth magnets.
Benefits
- They do not lose power, even over approximately ten years – the decrease in strength is only ~1% (theoretically),
- They show high resistance to demagnetization induced by presence of other magnetic fields,
- In other words, due to the shiny finish of gold, the element gains visual value,
- Magnets are distinguished by maximum magnetic induction on the working surface,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to versatility in forming and the capacity to customize to unusual requirements,
- Wide application in high-tech industry – they are commonly used in HDD drives, drive modules, medical devices, as well as modern systems.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Disadvantages
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Limited ability of producing threads in the magnet and complicated forms - preferred is casing - mounting mechanism.
- Health risk related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these products can be problematic in diagnostics medical in case of swallowing.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what it depends on?
- with the application of a yoke made of special test steel, ensuring full magnetic saturation
- whose thickness reaches at least 10 mm
- with a surface cleaned and smooth
- with total lack of distance (no coatings)
- under perpendicular application of breakaway force (90-degree angle)
- at conditions approx. 20°C
Magnet lifting force in use – key factors
- Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Material composition – not every steel attracts identically. High carbon content weaken the interaction with the magnet.
- Surface quality – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
- Heat – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and in frost gain strength (up to a certain limit).
Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as fivefold. Moreover, even a minimal clearance between the magnet and the plate reduces the lifting capacity.
H&S for magnets
Heat warning
Do not overheat. Neodymium magnets are sensitive to temperature. If you require operation above 80°C, look for HT versions (H, SH, UH).
Avoid contact if allergic
A percentage of the population experience a hypersensitivity to Ni, which is the common plating for neodymium magnets. Extended handling may cause an allergic reaction. We strongly advise wear protective gloves.
Electronic hazard
Powerful magnetic fields can erase data on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.
Precision electronics
Note: neodymium magnets produce a field that interferes with precision electronics. Maintain a safe distance from your mobile, tablet, and navigation systems.
Magnet fragility
Despite the nickel coating, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.
Bone fractures
Big blocks can smash fingers instantly. Under no circumstances put your hand betwixt two attracting surfaces.
Do not drill into magnets
Fire hazard: Rare earth powder is explosive. Do not process magnets without safety gear as this may cause fire.
Warning for heart patients
For implant holders: Powerful magnets affect electronics. Keep at least 30 cm distance or request help to work with the magnets.
This is not a toy
Only for adults. Small elements can be swallowed, leading to intestinal necrosis. Store out of reach of children and animals.
Do not underestimate power
Exercise caution. Neodymium magnets attract from a distance and snap with huge force, often faster than you can react.
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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