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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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Technical specification - 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% |
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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Strengths and weaknesses of neodymium magnets.
Benefits
- They retain attractive force for nearly 10 years – the loss is just ~1% (based on simulations),
- Magnets very well protect themselves against demagnetization caused by foreign field sources,
- In other words, due to the aesthetic layer of nickel, the element gains visual value,
- The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Thanks to flexibility in shaping and the capacity to adapt to client solutions,
- Universal use in future technologies – they are commonly used in magnetic memories, brushless drives, diagnostic systems, also complex engineering applications.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons
- At very strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- 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
- They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- We recommend cover - magnetic mount, due to difficulties in realizing nuts inside the magnet and complex forms.
- Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. Additionally, small components 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
Holding force characteristics
Maximum lifting capacity of the magnet – what affects it?
- with the application of a yoke made of special test steel, ensuring full magnetic saturation
- whose thickness equals approx. 10 mm
- with an polished contact surface
- under conditions of gap-free contact (surface-to-surface)
- during pulling in a direction perpendicular to the plane
- at standard ambient temperature
Practical lifting capacity: influencing factors
- Gap between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of nominal force).
- Element thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Material composition – different alloys attracts identically. Alloy additives worsen the attraction effect.
- Surface condition – smooth surfaces ensure maximum contact, which improves force. Uneven metal weaken the grip.
- Thermal conditions – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).
Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.
Safety rules for work with NdFeB magnets
Heat sensitivity
Standard neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.
Danger to pacemakers
For implant holders: Powerful magnets affect electronics. Maintain at least 30 cm distance or request help to handle the magnets.
Conscious usage
Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.
Cards and drives
Equipment safety: Neodymium magnets can damage payment cards and sensitive devices (heart implants, medical aids, timepieces).
Allergic reactions
Certain individuals experience a contact allergy to Ni, which is the typical protective layer for neodymium magnets. Prolonged contact can result in an allergic reaction. We recommend use protective gloves.
Bodily injuries
Danger of trauma: The pulling power is so great that it can cause blood blisters, crushing, and broken bones. Use thick gloves.
Flammability
Mechanical processing of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.
Impact on smartphones
Be aware: neodymium magnets produce a field that confuses sensitive sensors. Keep a safe distance from your phone, device, and GPS.
Magnet fragility
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.
No play value
Strictly store magnets away from children. Ingestion danger is high, and the consequences of magnets connecting inside the body are life-threatening.
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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