NC NeoCube fi 5 mm kuleczki kolorowe / N38 - neocube
neocube
Catalog no 120229
GTIN: 5906301812685
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
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Strength along with shape of a neodymium magnet can be calculated with our
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Magnetic properties of material N38
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Strengths and weaknesses of NdFeB magnets.
In addition to their pulling strength, neodymium magnets provide the following advantages:
- They retain attractive force for around 10 years – the loss is just ~1% (according to analyses),
- Neodymium magnets are extremely resistant to demagnetization caused by external magnetic fields,
- The use of an refined coating of noble metals (nickel, gold, silver) causes the element to present itself better,
- They are known for high magnetic induction at the operating surface, which increases their power,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
- Thanks to flexibility in designing and the capacity to modify to individual projects,
- Universal use in high-tech industry – they are commonly used in magnetic memories, drive modules, diagnostic systems, and modern systems.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in miniature devices
Problematic aspects of neodymium magnets: application proposals
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
- Neodymium magnets lose their strength 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 advise using waterproof magnets e.g. in rubber, plastic
- Due to limitations in creating threads and complex shapes in magnets, we propose using a housing - magnetic mechanism.
- Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. Additionally, small elements of these magnets can be problematic in diagnostics medical in case of swallowing.
- With budget limitations the cost of neodymium magnets can be a barrier,
Magnetic strength at its maximum – what it depends on?
Information about lifting capacity was defined for ideal contact conditions, including:
- using a sheet made of mild steel, functioning as a circuit closing element
- with a thickness no less than 10 mm
- with an polished contact surface
- with zero gap (no impurities)
- under perpendicular force vector (90-degree angle)
- at ambient temperature room level
Practical aspects of lifting capacity – factors
Bear in mind that the application force will differ subject to elements below, starting with the most relevant:
- Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
- Material type – ideal substrate is pure iron steel. Stainless steels may attract less.
- Surface structure – the more even the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
- Temperature influence – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.
* Lifting capacity was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap {between} the magnet and the plate reduces the load capacity.
H&S for magnets
Magnet fragility
NdFeB magnets are sintered ceramics, which means they are very brittle. Collision of two magnets leads to them breaking into shards.
Keep away from computers
Do not bring magnets near a purse, computer, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.
Finger safety
Risk of injury: The attraction force is so immense that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.
Allergic reactions
It is widely known that the nickel plating (standard magnet coating) is a potent allergen. If your skin reacts to metals, avoid direct skin contact or choose encased magnets.
Implant safety
Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.
Keep away from children
Only for adults. Small elements pose a choking risk, leading to intestinal necrosis. Store away from kids and pets.
Threat to navigation
Remember: neodymium magnets produce a field that disrupts sensitive sensors. Maintain a safe distance from your phone, device, and GPS.
Fire warning
Combustion risk: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Power loss in heat
Control the heat. Exposing the magnet to high heat will ruin its magnetic structure and strength.
Powerful field
Use magnets with awareness. Their immense force can surprise even professionals. Plan your moves and do not underestimate their force.
Attention!
Learn more about risks in the article: Safety of working with magnets.
