NC NeoCube fi 5 mm kuleczki srebrne / N38 - neocube
neocube
Catalog no 120228
GTIN: 5906301812678
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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Magnetic properties of material N38
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Pros and cons of NdFeB magnets.
In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
- They retain magnetic properties for nearly ten years – the drop is just ~1% (according to analyses),
- They are noted for resistance to demagnetization induced by presence of other magnetic fields,
- A magnet with a smooth nickel surface has an effective appearance,
- Magnetic induction on the surface of the magnet remains extremely intense,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to modularity in forming and the ability to customize to unusual requirements,
- Key role in electronics industry – they are utilized in hard drives, electromotive mechanisms, medical equipment, also technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in compact constructions
Problematic aspects of neodymium magnets and proposals for their use:
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a steel housing, which not only protects them against impacts but also increases their durability
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
- Limited possibility of making threads in the magnet and complicated forms - preferred is a housing - magnet mounting.
- Health risk resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these devices are able to be problematic in diagnostics medical after entering the body.
- Due to complex production process, their price is higher than average,
Breakaway strength of the magnet in ideal conditions – what contributes to it?
The specified lifting capacity represents the peak performance, recorded under optimal environment, namely:
- using a plate made of low-carbon steel, functioning as a ideal flux conductor
- with a cross-section no less than 10 mm
- characterized by smoothness
- without any insulating layer between the magnet and steel
- during detachment in a direction perpendicular to the plane
- at standard ambient temperature
Magnet lifting force in use – key factors
Effective lifting capacity is affected by specific conditions, mainly (from priority):
- Clearance – existence of any layer (paint, dirt, air) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
- Loading method – catalog parameter refers to pulling vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
- Steel thickness – insufficiently thick plate does not accept the full field, causing part of the power to be escaped to the other side.
- Plate material – low-carbon steel attracts best. Higher carbon content decrease magnetic properties and holding force.
- Surface condition – smooth surfaces ensure maximum contact, which improves force. Rough surfaces weaken the grip.
- Thermal environment – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.
* Lifting capacity was assessed using a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the lifting capacity is smaller. Additionally, even a slight gap {between} the magnet and the plate decreases the lifting capacity.
H&S for magnets
GPS and phone interference
Remember: neodymium magnets produce a field that disrupts precision electronics. Keep a separation from your phone, device, and navigation systems.
Data carriers
Equipment safety: Strong magnets can damage payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).
Conscious usage
Exercise caution. Rare earth magnets act from a distance and connect with huge force, often quicker than you can react.
Maximum temperature
Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. The loss of strength is permanent.
Nickel allergy
Some people suffer from a hypersensitivity to Ni, which is the typical protective layer for neodymium magnets. Prolonged contact can result in skin redness. We recommend use safety gloves.
Implant safety
Individuals with a heart stimulator must maintain an absolute distance from magnets. The magnetism can interfere with the functioning of the life-saving device.
Crushing force
Big blocks can smash fingers in a fraction of a second. Under no circumstances put your hand betwixt two attracting surfaces.
Do not give to children
Adult use only. Small elements pose a choking risk, leading to intestinal necrosis. Store away from kids and pets.
Do not drill into magnets
Fire hazard: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.
Risk of cracking
NdFeB magnets are ceramic materials, which means they are very brittle. Collision of two magnets leads to them shattering into small pieces.
Safety First!
More info about hazards in the article: Magnet Safety Guide.
