UMGW 60x30x15 [M10] GW / N38 - magnetic holder internal thread

Pros as well as cons of NdFeB magnets.

Besides their remarkable field intensity, neodymium magnets offer the following advantages:

• They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (according to literature),
• Magnets perfectly defend themselves against loss of magnetization caused by foreign field sources,
• By using a smooth layer of gold, the element acquires an professional look,
• Neodymium magnets deliver maximum magnetic induction on a small surface, which ensures high operational effectiveness,
• Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
• Considering the possibility of free molding and adaptation to custom projects, neodymium magnets can be produced in a broad palette of geometric configurations, which expands the range of possible applications,
• Significant place in modern industrial fields – they are utilized in HDD drives, motor assemblies, medical equipment, and technologically advanced constructions.
• Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages of NdFeB magnets:

• To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
• When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
• They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
• Due to limitations in producing nuts and complicated forms in magnets, we recommend using cover - magnetic holder.
• Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Furthermore, small elements of these devices are able to complicate diagnosis medical after entering the body.
• Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Best holding force of the magnet in ideal parameters – what it depends on?

The lifting capacity listed is a measurement result conducted under standard conditions:

• using a base made of mild steel, functioning as a circuit closing element
• with a thickness no less than 10 mm
• with an ideally smooth contact surface
• with zero gap (without coatings)
• under vertical force vector (90-degree angle)
• in neutral thermal conditions

Key elements affecting lifting force

In practice, the real power is determined by several key aspects, listed from crucial:

• Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
• Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
• Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
• Chemical composition of the base – low-carbon steel gives the best results. Higher carbon content lower magnetic properties and lifting capacity.
• Surface condition – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
• Thermal environment – temperature increase results in weakening of force. It is worth remembering the maximum operating temperature for a given model.

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