UMP 29x10 [M5] GW - search holder

Strengths and weaknesses of rare earth magnets.

In addition to their long-term stability, neodymium magnets provide the following advantages:

• They do not lose power, even after nearly 10 years – the drop in power is only ~1% (theoretically),
• Neodymium magnets are distinguished by remarkably resistant to demagnetization caused by external interference,
• By using a decorative coating of silver, the element presents an nice look,
• Magnetic induction on the working part of the magnet remains strong,
• Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
• Due to the potential of free shaping and adaptation to individualized needs, magnetic components can be manufactured in a wide range of geometric configurations, which expands the range of possible applications,
• Significant place in advanced technology sectors – they find application in data components, drive modules, precision medical tools, and multitasking production systems.
• Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in compact constructions

Problematic aspects of neodymium magnets and ways of using them

• To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
• We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
• When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
• We recommend cover - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated forms.
• Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Furthermore, tiny parts of these magnets can be problematic in diagnostics medical in case of swallowing.
• Due to complex production process, their price is higher than average,

Maximum lifting force for a neodymium magnet – what it depends on?

The lifting capacity listed is a result of laboratory testing performed under the following configuration:

• with the contact of a sheet made of special test steel, guaranteeing maximum field concentration
• whose thickness equals approx. 10 mm
• with a surface cleaned and smooth
• without any clearance between the magnet and steel
• under vertical force vector (90-degree angle)
• at ambient temperature room level

Practical aspects of lifting capacity – factors

In practice, the actual lifting capacity is determined by several key aspects, presented from crucial:

• Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
• Direction of force – highest force is reached only during pulling at a 90° angle. The shear force of the magnet along the surface is standardly 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 converting into lifting capacity.
• Material composition – not every steel attracts identically. High carbon content weaken the interaction with the magnet.
• Surface finish – full contact is possible only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
• Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

* Lifting capacity was assessed by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. In addition, even a slight gap {between} the magnet and the plate reduces the lifting capacity.

Strengths and weaknesses of rare earth magnets.

In addition to their long-term stability, neodymium magnets provide the following advantages:

• They do not lose power, even after nearly 10 years – the drop in power is only ~1% (theoretically),
• Neodymium magnets are distinguished by remarkably resistant to demagnetization caused by external interference,
• By using a decorative coating of silver, the element presents an nice look,
• Magnetic induction on the working part of the magnet remains strong,
• Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
• Due to the potential of free shaping and adaptation to individualized needs, magnetic components can be manufactured in a wide range of geometric configurations, which expands the range of possible applications,
• Significant place in advanced technology sectors – they find application in data components, drive modules, precision medical tools, and multitasking production systems.
• Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in compact constructions

Problematic aspects of neodymium magnets and ways of using them

• To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
• We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
• When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
• We recommend cover - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated forms.
• Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Furthermore, tiny parts of these magnets can be problematic in diagnostics medical in case of swallowing.
• Due to complex production process, their price is higher than average,

Maximum lifting force for a neodymium magnet – what it depends on?

The lifting capacity listed is a result of laboratory testing performed under the following configuration:

• with the contact of a sheet made of special test steel, guaranteeing maximum field concentration
• whose thickness equals approx. 10 mm
• with a surface cleaned and smooth
• without any clearance between the magnet and steel
• under vertical force vector (90-degree angle)
• at ambient temperature room level

Practical aspects of lifting capacity – factors

In practice, the actual lifting capacity is determined by several key aspects, presented from crucial:

• Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
• Direction of force – highest force is reached only during pulling at a 90° angle. The shear force of the magnet along the surface is standardly 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 converting into lifting capacity.
• Material composition – not every steel attracts identically. High carbon content weaken the interaction with the magnet.
• Surface finish – full contact is possible only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
• Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

* Lifting capacity was assessed by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. In addition, even a slight gap {between} the magnet and the plate reduces the lifting capacity.