SM 32x400 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130302
GTIN: 5906301812951
Diameter Ø [±0,1 mm]
32 mm
Height [±0,1 mm]
400 mm
Weight
2145 g
1193.10 ZŁ with VAT / pcs + price for transport
970.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Strength along with form of a neodymium magnet can be checked with our
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Magnetic properties of material N42
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Pros and cons of rare earth magnets.
Besides their stability, neodymium magnets are valued for these benefits:
- They have stable power, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
- They maintain their magnetic properties even under external field action,
- By using a decorative coating of silver, the element gains an proper look,
- They show high magnetic induction at the operating surface, which increases their power,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Possibility of accurate shaping as well as optimizing to concrete applications,
- Huge importance in modern industrial fields – they are utilized in computer drives, drive modules, precision medical tools, also multitasking production systems.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Disadvantages of NdFeB magnets:
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- We recommend casing - magnetic holder, due to difficulties in creating threads inside the magnet and complicated forms.
- Potential hazard related to microscopic parts of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. It is also worth noting that small components of these products are able to complicate diagnosis medical after entering the body.
- With budget limitations the cost of neodymium magnets can be a barrier,
Magnetic strength at its maximum – what contributes to it?
The lifting capacity listed is a result of laboratory testing conducted under specific, ideal conditions:
- using a sheet made of low-carbon steel, functioning as a magnetic yoke
- whose thickness is min. 10 mm
- with an ideally smooth touching surface
- under conditions of no distance (metal-to-metal)
- during detachment in a direction vertical to the plane
- at temperature room level
What influences lifting capacity in practice
During everyday use, the actual holding force is determined by many variables, presented from most significant:
- Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
- Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
- Plate material – mild steel attracts best. Higher carbon content decrease magnetic permeability and lifting capacity.
- Surface finish – ideal contact is possible only on polished steel. Rough texture create air cushions, reducing force.
- Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the thermal limit for a given model.
* Lifting capacity was assessed by applying a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the holding force is lower. Moreover, even a small distance {between} the magnet and the plate decreases the lifting capacity.
H&S for magnets
Medical interference
Warning for patients: Strong magnetic fields disrupt medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.
Keep away from children
Neodymium magnets are not intended for children. Eating multiple magnets can lead to them attracting across intestines, which poses a direct threat to life and necessitates immediate surgery.
Beware of splinters
Neodymium magnets are ceramic materials, meaning they are fragile like glass. Collision of two magnets will cause them cracking into small pieces.
Skin irritation risks
Certain individuals have a hypersensitivity to Ni, which is the standard coating for NdFeB magnets. Extended handling might lead to a rash. We strongly advise wear safety gloves.
Pinching danger
Large magnets can break fingers instantly. Do not put your hand between two strong magnets.
Precision electronics
GPS units and mobile phones are extremely sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.
Threat to electronics
Data protection: Strong magnets can ruin payment cards and delicate electronics (heart implants, medical aids, mechanical watches).
Demagnetization risk
Standard neodymium magnets (N-type) lose power when the temperature goes above 80°C. Damage is permanent.
Caution required
Be careful. Rare earth magnets attract from a long distance and connect with massive power, often faster than you can move away.
Mechanical processing
Dust generated during machining of magnets is flammable. Do not drill into magnets unless you are an expert.
Safety First!
Details about hazards in the article: Magnet Safety Guide.
