MW 6x2 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010092
GTIN: 5906301810919
Diameter Ø
6 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
0.42 g
Magnetization Direction
↑ axial
Load capacity
0.66 kg / 6.47 N
Magnetic Induction
343.37 mT
Coating
[NiCuNi] nickel
0.246 ZŁ with VAT / pcs + price for transport
0.200 ZŁ net + 23% VAT / pcs
bulk discounts:
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Lifting power along with shape of neodymium magnets can be calculated on our
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Magnetic properties of material N38
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Pros and cons of neodymium magnets.
Besides their stability, neodymium magnets are valued for these benefits:
- They do not lose power, even after approximately 10 years – the reduction in power is only ~1% (based on measurements),
- They do not lose their magnetic properties even under external field action,
- A magnet with a metallic nickel surface has better aesthetics,
- Magnets have maximum magnetic induction on the working surface,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- In view of the potential of accurate shaping and adaptation to individualized requirements, magnetic components can be created in a broad palette of geometric configurations, which makes them more universal,
- Versatile presence in high-tech industry – they find application in hard drives, electric drive systems, precision medical tools, also complex engineering applications.
- Compactness – despite small sizes they generate large force, 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 using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Limited possibility of creating threads in the magnet and complex shapes - preferred is a housing - magnet mounting.
- Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. Furthermore, small elements of these devices can be problematic in diagnostics medical when they are in the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Optimal lifting capacity of a neodymium magnet – what it depends on?
Holding force of 0.66 kg is a result of laboratory testing performed under the following configuration:
- on a base made of mild steel, optimally conducting the magnetic flux
- possessing a thickness of min. 10 mm to ensure full flux closure
- characterized by lack of roughness
- under conditions of no distance (metal-to-metal)
- for force applied at a right angle (pull-off, not shear)
- at ambient temperature room level
Magnet lifting force in use – key factors
Effective lifting capacity is affected by working environment parameters, mainly (from most important):
- Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
- Angle of force application – maximum parameter is reached only during perpendicular pulling. The resistance to sliding of the magnet along the plate is standardly several times smaller (approx. 1/5 of the lifting capacity).
- Plate thickness – too thin steel does not close the flux, causing part of the power to be lost to the other side.
- Plate material – low-carbon steel attracts best. Alloy admixtures lower magnetic properties and lifting capacity.
- Base smoothness – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).
* Lifting capacity was assessed with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the load capacity is reduced by as much as 75%. Additionally, even a slight gap {between} the magnet and the plate decreases the holding force.
Safe handling of NdFeB magnets
GPS and phone interference
Navigation devices and smartphones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can ruin the sensors in your phone.
Electronic devices
Intense magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Stay away of at least 10 cm.
Danger to pacemakers
Individuals with a heart stimulator have to maintain an large gap from magnets. The magnetism can disrupt the functioning of the implant.
Eye protection
Beware of splinters. Magnets can explode upon violent connection, launching shards into the air. We recommend safety glasses.
Heat warning
Avoid heat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).
Sensitization to coating
Studies show that nickel (the usual finish) is a common allergen. If your skin reacts to metals, prevent direct skin contact or opt for coated magnets.
Product not for children
Strictly store magnets away from children. Risk of swallowing is significant, and the effects of magnets clamping inside the body are tragic.
Do not drill into magnets
Dust produced during grinding of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.
Physical harm
Danger of trauma: The pulling power is so great that it can result in blood blisters, crushing, and broken bones. Protective gloves are recommended.
Immense force
Be careful. Neodymium magnets act from a distance and snap with massive power, often quicker than you can move away.
Security!
Need more info? Read our article: Why are neodymium magnets dangerous?
