NC NeoCube fi 5 mm kuleczki srebrne / N38 - neocube

Pros as well as cons of NdFeB magnets.

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

• Their power remains stable, and after around ten years it decreases only by ~1% (according to research),
• They have excellent resistance to weakening of magnetic properties due to opposing magnetic fields,
• By applying a smooth coating of silver, the element acquires an proper look,
• Magnetic induction on the working part of the magnet is exceptional,
• 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...
• Considering the possibility of flexible forming and customization to custom projects, neodymium magnets can be modeled in a broad palette of forms and dimensions, which makes them more universal,
• Key role in future technologies – they are utilized in magnetic memories, drive modules, medical devices, and industrial machines.
• Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages of NdFeB magnets:

• They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
• Neodymium magnets lose their power 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 durability even at temperatures up to 230°C
• They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
• We recommend a housing - magnetic mount, due to difficulties in realizing threads inside the magnet and complex forms.
• Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. It is also worth noting that small components of these products are able to disrupt the diagnostic process medical when they are in the body.
• High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities

Maximum lifting capacity of the magnet – what contributes to it?

Holding force of 0 kg is a measurement result conducted under the following configuration:

• with the contact of a yoke made of low-carbon steel, guaranteeing maximum field concentration
• possessing a massiveness of min. 10 mm to ensure full flux closure
• characterized by even structure
• under conditions of ideal adhesion (surface-to-surface)
• under vertical application of breakaway force (90-degree angle)
• in stable room temperature

Lifting capacity in real conditions – factors

Bear in mind that the magnet holding will differ influenced by the following factors, starting with the most relevant:

• Gap (between the magnet and the metal), since even a tiny clearance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
• Load vector – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
• Steel thickness – insufficiently thick steel does not close the flux, causing part of the flux to be wasted to the other side.
• Metal type – not every steel attracts identically. High carbon content weaken the attraction effect.
• Surface condition – ground elements 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.

* Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the load capacity is reduced by as much as 5 times. In addition, even a small distance {between} the magnet’s surface and the plate reduces the holding force.