MW 6x2 / N38 - cylindrical magnet

Advantages as well as disadvantages of neodymium magnets.

Apart from their superior power, neodymium magnets have these key benefits:

• Their magnetic field remains stable, and after around 10 years it decreases only by ~1% (theoretically),
• They possess excellent resistance to weakening of magnetic properties due to external magnetic sources,
• The use of an refined coating of noble metals (nickel, gold, silver) causes the element to present itself better,
• Neodymium magnets ensure maximum magnetic induction on a contact point, which ensures high operational effectiveness,
• Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
• In view of the potential of flexible shaping and customization to custom solutions, magnetic components can be modeled in a wide range of shapes and sizes, which makes them more universal,
• Key role in innovative solutions – they find application in mass storage devices, electric motors, advanced medical instruments, and technologically advanced constructions.
• Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which enables their usage in small systems

Disadvantages of NdFeB magnets:

• They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
• We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
• They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
• We recommend casing - magnetic mount, due to difficulties in realizing threads inside the magnet and complex forms.
• Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these products are able to complicate diagnosis medical when they are in the body.
• With large orders the cost of neodymium magnets can be a barrier,

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

The specified lifting capacity concerns the peak performance, obtained under ideal test conditions, specifically:

• with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
• with a thickness of at least 10 mm
• characterized by lack of roughness
• under conditions of no distance (surface-to-surface)
• under vertical application of breakaway force (90-degree angle)
• at ambient temperature room level

Key elements affecting lifting force

It is worth knowing that the working load may be lower depending on the following factors, in order of importance:

• Air gap (between the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to varnish, rust or debris).
• Load vector – highest force is available only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly several times lower (approx. 1/5 of the lifting capacity).
• Steel thickness – insufficiently thick plate does not accept the full field, causing part of the flux to be lost to the other side.
• Metal type – different alloys attracts identically. Alloy additives weaken the attraction effect.
• Surface condition – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
• Temperature – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

* Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, whereas under shearing force the holding force is lower. Additionally, even a small distance {between} the magnet and the plate reduces the load capacity.