SM 25x175 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130369
GTIN: 5906301813170
Diameter Ø [±0,1 mm]
25 mm
Height [±0,1 mm]
175 mm
Weight
0.01 g
541.20 ZŁ with VAT / pcs + price for transport
440.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Magnetic properties of material N52
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Pros as well as cons of NdFeB magnets.
In addition to their magnetic efficiency, neodymium magnets provide the following advantages:
- They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
- Magnets effectively resist against loss of magnetization caused by ambient magnetic noise,
- A magnet with a smooth nickel surface looks better,
- Neodymium magnets deliver maximum magnetic induction on a contact point, which ensures high operational effectiveness,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures approaching 230°C and above...
- Possibility of precise forming and adapting to concrete needs,
- Universal use in high-tech industry – they serve a role in computer drives, brushless drives, medical equipment, also modern systems.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Cons of neodymium magnets: application proposals
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. 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 advise our specialized [AH] magnets, which work effectively even at 230°C.
- They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- We recommend a housing - magnetic holder, due to difficulties in producing threads inside the magnet and complex forms.
- Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small elements of these devices can be problematic in diagnostics medical when they are in the body.
- Due to expensive raw materials, their price is relatively high,
Magnetic strength at its maximum – what it depends on?
The specified lifting capacity refers to the maximum value, recorded under optimal environment, meaning:
- with the application of a sheet made of special test steel, guaranteeing maximum field concentration
- possessing a massiveness of minimum 10 mm to avoid saturation
- with an polished touching surface
- without the slightest insulating layer between the magnet and steel
- during detachment in a direction vertical to the mounting surface
- at ambient temperature approx. 20 degrees Celsius
Key elements affecting lifting force
It is worth knowing that the working load will differ subject to the following factors, in order of importance:
- Distance – the presence of foreign body (paint, tape, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
- Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet holds much less (often approx. 20-30% of nominal force).
- Base massiveness – insufficiently thick plate does not close the flux, causing part of the power to be escaped into the air.
- Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures lower magnetic permeability and lifting capacity.
- Plate texture – ground elements guarantee perfect abutment, which increases force. Rough surfaces weaken the grip.
- Thermal environment – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.
* Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the lifting capacity is smaller. Moreover, even a slight gap {between} the magnet and the plate lowers the holding force.
H&S for magnets
Immense force
Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
Material brittleness
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Fire warning
Fire hazard: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Do not give to children
Adult use only. Tiny parts pose a choking risk, leading to serious injuries. Store away from kids and pets.
Magnetic media
Avoid bringing magnets near a wallet, computer, or screen. The magnetic field can permanently damage these devices and erase data from cards.
Warning for heart patients
Life threat: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.
Finger safety
Big blocks can break fingers instantly. Do not place your hand between two strong magnets.
Keep away from electronics
An intense magnetic field interferes with the functioning of magnetometers in smartphones and navigation systems. Keep magnets close to a device to avoid breaking the sensors.
Allergic reactions
Medical facts indicate that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, prevent touching magnets with bare hands and select coated magnets.
Do not overheat magnets
Standard neodymium magnets (grade N) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.
Caution!
Looking for details? Check our post: Why are neodymium magnets dangerous?
