UMGB 135x40 [M10+M12] GW F600 +Lina GOBLIN / N38 - goblin magnetic holder

Pros and cons of NdFeB magnets.

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

• They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
• Magnets perfectly resist against demagnetization caused by foreign field sources,
• Thanks to the shiny finish, the layer of Ni-Cu-Ni, gold-plated, or silver gives an professional appearance,
• Neodymium magnets ensure maximum magnetic induction on a contact point, which ensures high operational effectiveness,
• Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
• Possibility of precise forming and adjusting to precise needs,
• Huge importance in electronics industry – they are commonly used in data components, electromotive mechanisms, medical equipment, also industrial machines.
• Compactness – despite small sizes they generate large force, making them ideal for precision applications

Drawbacks and weaknesses of neodymium magnets: tips and applications.

• To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its 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.
• Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
• Due to limitations in producing threads and complex forms in magnets, we recommend using casing - magnetic mount.
• Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small elements of these products can disrupt the diagnostic process medical after entering the body.
• Due to complex production process, their price is relatively high,

Maximum lifting capacity of the magnet – what it depends on?

The load parameter shown represents the limit force, measured under optimal environment, specifically:

• using a plate made of low-carbon steel, functioning as a magnetic yoke
• possessing a massiveness of min. 10 mm to avoid saturation
• with a surface cleaned and smooth
• under conditions of gap-free contact (surface-to-surface)
• during detachment in a direction perpendicular to the plane
• at room temperature

Magnet lifting force in use – key factors

In real-world applications, the actual lifting capacity results from a number of factors, listed from crucial:

• Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
• Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
• Plate thickness – insufficiently thick sheet does not close the flux, causing part of the power to be escaped into the air.
• Steel grade – the best choice is high-permeability steel. Stainless steels may generate lower lifting capacity.
• Base smoothness – the smoother and more polished the plate, the better the adhesion and stronger the hold. Unevenness creates an air distance.
• Temperature influence – hot environment weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.

* Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, in contrast under parallel forces the load capacity is reduced by as much as 5 times. Additionally, even a slight gap {between} the magnet and the plate reduces the holding force.