SM 25x200 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130364
GTIN: 5906301813125
Diameter Ø
25 mm [±1 mm]
Height
200 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 9 500 Gauss [±5%]
615.00 ZŁ with VAT / pcs + price for transport
500.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Force as well as form of neodymium magnets can be verified on our
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Magnetic properties of material N52
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Advantages as well as disadvantages of rare earth magnets.
Besides their remarkable pulling force, neodymium magnets offer the following advantages:
- They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
- Magnets very well protect themselves against demagnetization caused by ambient magnetic noise,
- By covering with a decorative layer of gold, the element has an elegant look,
- Magnetic induction on the working layer of the magnet turns out to be maximum,
- 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...
- Possibility of custom forming as well as adapting to complex requirements,
- Fundamental importance in innovative solutions – they are utilized in mass storage devices, drive modules, medical devices, and industrial machines.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Cons of neodymium magnets and ways of using them
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- We recommend a housing - magnetic mount, due to difficulties in producing nuts inside the magnet and complicated forms.
- Possible danger resulting from small fragments of magnets can be dangerous, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, small components of these magnets are able to disrupt the diagnostic process medical after entering the body.
- Due to neodymium price, their price exceeds standard values,
Maximum magnetic pulling force – what affects it?
The force parameter is a result of laboratory testing performed under specific, ideal conditions:
- on a block made of structural steel, optimally conducting the magnetic field
- with a cross-section of at least 10 mm
- with a plane free of scratches
- without the slightest air gap between the magnet and steel
- for force applied at a right angle (pull-off, not shear)
- at temperature approx. 20 degrees Celsius
Key elements affecting lifting force
In practice, the actual lifting capacity depends on a number of factors, listed from crucial:
- Distance (between the magnet and the metal), as even a microscopic clearance (e.g. 0.5 mm) leads to a reduction in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
- Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Plate material – mild steel gives the best results. Alloy admixtures decrease magnetic permeability and lifting capacity.
- Surface condition – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces reduce efficiency.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).
* Lifting capacity testing was performed on a smooth plate of suitable thickness, under a perpendicular pulling force, however under attempts to slide the magnet the holding force is lower. Additionally, even a small distance {between} the magnet’s surface and the plate decreases the load capacity.
Warnings
GPS and phone interference
A strong magnetic field interferes with the operation of magnetometers in smartphones and GPS navigation. Maintain magnets close to a smartphone to prevent breaking the sensors.
Medical implants
Life threat: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.
Eye protection
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
Do not overheat magnets
Standard neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. Damage is permanent.
This is not a toy
NdFeB magnets are not intended for children. Swallowing several magnets can lead to them attracting across intestines, which constitutes a severe health hazard and requires immediate surgery.
Handling guide
Handle magnets consciously. Their powerful strength can surprise even professionals. Plan your moves and respect their power.
Sensitization to coating
Some people suffer from a hypersensitivity to Ni, which is the standard coating for NdFeB magnets. Prolonged contact might lead to skin redness. It is best to use safety gloves.
Finger safety
Watch your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!
Mechanical processing
Dust generated during cutting of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.
Cards and drives
Powerful magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Stay away of min. 10 cm.
Caution!
More info about hazards in the article: Magnet Safety Guide.
