MW 10x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010004
GTIN: 5906301810032
Diameter Ø [±0,1 mm]
10 mm
Height [±0,1 mm]
10 mm
Weight
5.89 g
Magnetization Direction
↑ axial
Load capacity
5.53 kg / 54.23 N
Magnetic Induction
553.84 mT
Coating
[NiCuNi] nickel
4.31 ZŁ with VAT / pcs + price for transport
3.50 ZŁ net + 23% VAT / pcs
2.57 ZŁ net was the lowest price in the last 30 days
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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 rare earth magnets.
Besides their magnetic performance, neodymium magnets are valued for these benefits:
- They retain attractive force for almost 10 years – the loss is just ~1% (in theory),
- Magnets perfectly defend themselves against loss of magnetization caused by foreign field sources,
- In other words, due to the metallic finish of silver, the element looks attractive,
- The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Due to the option of precise forming and adaptation to custom needs, magnetic components can be created in a variety of shapes and sizes, which makes them more universal,
- Universal use in modern technologies – they find application in magnetic memories, electric motors, medical equipment, as well as multitasking production systems.
- 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 heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
- We recommend a housing - magnetic holder, due to difficulties in producing nuts inside the magnet and complex shapes.
- Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, tiny parts of these devices are able to complicate diagnosis medical when they are in the body.
- Due to expensive raw materials, their price exceeds standard values,
Breakaway strength of the magnet in ideal conditions – what it depends on?
Breakaway force is the result of a measurement for the most favorable conditions, including:
- using a plate made of high-permeability steel, functioning as a magnetic yoke
- whose transverse dimension is min. 10 mm
- with an ideally smooth contact surface
- under conditions of ideal adhesion (surface-to-surface)
- for force acting at a right angle (pull-off, not shear)
- at ambient temperature approx. 20 degrees Celsius
Impact of factors on magnetic holding capacity in practice
During everyday use, the actual holding force results from several key aspects, presented from crucial:
- Space between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Plate material – low-carbon steel gives the best results. Alloy steels lower magnetic properties and holding force.
- Surface quality – the more even the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
- Thermal environment – heating the magnet causes a temporary drop of force. Check the thermal limit for a given model.
* Lifting capacity was measured using a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the load capacity is reduced by as much as 5 times. Moreover, even a minimal clearance {between} the magnet and the plate reduces the holding force.
H&S for magnets
Bodily injuries
Danger of trauma: The attraction force is so immense that it can result in blood blisters, pinching, and even bone fractures. Protective gloves are recommended.
ICD Warning
Medical warning: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.
Protect data
Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, timepieces).
Dust is flammable
Powder produced during machining of magnets is flammable. Do not drill into magnets unless you are an expert.
GPS Danger
Note: neodymium magnets generate a field that disrupts precision electronics. Keep a separation from your mobile, tablet, and navigation systems.
Conscious usage
Handle magnets consciously. Their huge power can shock even professionals. Stay alert and respect their force.
Beware of splinters
Neodymium magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets will cause them cracking into shards.
Product not for children
These products are not toys. Eating multiple magnets may result in them attracting across intestines, which constitutes a critical condition and necessitates immediate surgery.
Allergic reactions
Certain individuals have a contact allergy to nickel, which is the standard coating for neodymium magnets. Prolonged contact can result in skin redness. We suggest use protective gloves.
Power loss in heat
Avoid heat. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).
Attention!
Looking for details? Check our post: Are neodymium magnets dangerous?
