NC NeoCube fi 5 mm kuleczki srebrne / N38 - neocube

Strengths as well as weaknesses of rare earth magnets.

Apart from their strong holding force, neodymium magnets have these key benefits:

• They do not lose power, even during approximately ten years – the drop in power is only ~1% (theoretically),
• They maintain their magnetic properties even under close interference source,
• By using a decorative layer of gold, the element acquires an aesthetic look,
• Magnets exhibit excellent magnetic induction on the outer side,
• Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
• In view of the ability of accurate shaping and customization to specialized solutions, NdFeB magnets can be produced in a variety of forms and dimensions, which makes them more universal,
• Wide application in future technologies – they are commonly used in magnetic memories, drive modules, diagnostic systems, and technologically advanced constructions.
• Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages of NdFeB magnets:

• Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
• We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
• When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
• Limited ability of creating nuts in the magnet and complicated forms - preferred is cover - magnetic holder.
• Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. It is also worth noting that tiny parts of these products are able to be problematic in diagnostics medical in case of swallowing.
• With budget limitations the cost of neodymium magnets is economically unviable,

Detachment force of the magnet in optimal conditions – what contributes to it?

The specified lifting capacity refers to the maximum value, obtained under optimal environment, specifically:

• on a block made of structural steel, perfectly concentrating the magnetic field
• possessing a massiveness of at least 10 mm to avoid saturation
• characterized by smoothness
• without any insulating layer between the magnet and steel
• during detachment in a direction perpendicular to the mounting surface
• at temperature approx. 20 degrees Celsius

Determinants of practical lifting force of a magnet

Please note that the magnet holding may be lower depending on the following factors, starting with the most relevant:

• Distance – the presence of any layer (paint, dirt, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
• Load vector – highest force is available only during pulling at a 90° angle. The shear force of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
• Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
• Plate material – mild steel attracts best. Alloy admixtures lower magnetic permeability and lifting capacity.
• Plate texture – smooth surfaces ensure maximum contact, which increases force. Uneven metal weaken the grip.
• Temperature – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

* Lifting capacity was determined with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the holding force is lower. In addition, even a slight gap {between} the magnet’s surface and the plate reduces the load capacity.