SM 25x250 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130371
GTIN: 5906301813194
Diameter Ø [±0,1 mm]
25 mm
Height [±0,1 mm]
250 mm
Weight
0.01 g
762.60 ZŁ with VAT / pcs + price for transport
620.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Lifting power as well as appearance of a neodymium magnet can be analyzed using our
force calculator.
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Magnetic properties of material N52
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Pros and cons of neodymium magnets.
In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
- They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
- Magnets perfectly protect themselves against loss of magnetization caused by external fields,
- By applying a shiny coating of gold, the element acquires an aesthetic look,
- The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
- Thanks to freedom in constructing and the capacity to customize to unusual requirements,
- Wide application in innovative solutions – they serve a role in computer drives, electric drive systems, diagnostic systems, also industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which enables their usage in small systems
Disadvantages of neodymium magnets:
- At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- Due to limitations in realizing threads and complicated forms in magnets, we recommend using a housing - magnetic holder.
- Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Additionally, tiny parts of these devices are able to be problematic in diagnostics medical in case of swallowing.
- Due to complex production process, their price is higher than average,
Magnetic strength at its maximum – what it depends on?
Information about lifting capacity was determined for optimal configuration, assuming:
- on a plate made of structural steel, effectively closing the magnetic field
- whose thickness equals approx. 10 mm
- with a surface free of scratches
- without any clearance between the magnet and steel
- during detachment in a direction vertical to the mounting surface
- at standard ambient temperature
Determinants of practical lifting force of a magnet
It is worth knowing that the working load may be lower subject to the following factors, in order of importance:
- Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
- Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of nominal force).
- Base massiveness – insufficiently thick sheet does not accept the full field, causing part of the power to be lost to the other side.
- Steel grade – the best choice is pure iron steel. Hardened steels may generate lower lifting capacity.
- Surface condition – ground elements guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
- Thermal environment – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.
* Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, however under parallel forces the holding force is lower. Additionally, even a small distance {between} the magnet’s surface and the plate decreases the load capacity.
H&S for magnets
Heat sensitivity
Watch the temperature. Exposing the magnet to high heat will permanently weaken its magnetic structure and strength.
Swallowing risk
Neodymium magnets are not intended for children. Accidental ingestion of a few magnets can lead to them attracting across intestines, which constitutes a severe health hazard and requires immediate surgery.
Mechanical processing
Dust created during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.
Respect the power
Handle magnets with awareness. Their powerful strength can shock even professionals. Plan your moves and do not underestimate their power.
Health Danger
For implant holders: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or request help to work with the magnets.
Nickel allergy
A percentage of the population have a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Prolonged contact can result in an allergic reaction. It is best to wear protective gloves.
Crushing force
Mind your fingers. Two powerful magnets will join instantly with a force of massive weight, crushing everything in their path. Be careful!
Safe distance
Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.
GPS Danger
Be aware: rare earth magnets generate a field that disrupts sensitive sensors. Maintain a safe distance from your phone, device, and GPS.
Shattering risk
Protect your eyes. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.
Important!
Need more info? Read our article: Why are neodymium magnets dangerous?
