NC NeoCube fi 5 mm kuleczki srebrne / N38 - neocube

Strengths as well as weaknesses of neodymium magnets.

Besides their immense magnetic power, neodymium magnets offer the following advantages:

• Their power remains stable, and after around ten years it drops only by ~1% (according to research),
• Magnets perfectly defend themselves against loss of magnetization caused by ambient magnetic noise,
• By applying a decorative layer of nickel, the element gains an elegant look,
• Neodymium magnets generate maximum magnetic induction on a small surface, which ensures high operational effectiveness,
• Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
• In view of the ability of flexible molding and customization to custom requirements, NdFeB magnets can be produced in a broad palette of forms and dimensions, which makes them more universal,
• Fundamental importance in high-tech industry – they are commonly used in magnetic memories, motor assemblies, advanced medical instruments, and technologically advanced constructions.
• Compactness – despite small sizes they generate large force, making them ideal for precision applications

Drawbacks and weaknesses of neodymium magnets and ways of using them

• At very strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
• NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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
• When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
• Limited ability of creating threads in the magnet and complicated shapes - preferred is casing - mounting mechanism.
• Possible danger to health – tiny shards of magnets are risky, if swallowed, which becomes key in the context of child safety. Additionally, small elements of these devices are able to disrupt the diagnostic process medical after entering the body.
• With large orders the cost of neodymium magnets is a challenge,

Maximum lifting capacity of the magnet – what affects it?

The force parameter is a theoretical maximum value conducted under specific, ideal conditions:

• on a base made of structural steel, perfectly concentrating the magnetic field
• whose thickness is min. 10 mm
• characterized by smoothness
• without the slightest clearance between the magnet and steel
• under axial application of breakaway force (90-degree angle)
• at conditions approx. 20°C

Key elements affecting lifting force

In real-world applications, the actual lifting capacity is determined by a number of factors, presented from crucial:

• Air gap (betwixt the magnet and the metal), since even a microscopic distance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
• Loading method – catalog parameter refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
• Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
• Steel type – mild steel gives the best results. Alloy steels decrease magnetic properties and lifting capacity.
• Surface condition – ground elements guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
• Thermal conditions – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).

* Lifting capacity was assessed using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the lifting capacity is smaller. Moreover, even a slight gap {between} the magnet and the plate lowers the holding force.