SM 25x125 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130367
GTIN: 5906301813156
Diameter Ø [±0,1 mm]
25 mm
Height [±0,1 mm]
125 mm
Weight
0.01 g
393.60 ZŁ with VAT / pcs + price for transport
320.00 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
Advantages as well as disadvantages of neodymium magnets.
In addition to their pulling strength, neodymium magnets provide the following advantages:
- They do not lose power, even over approximately ten years – the decrease in strength is only ~1% (according to tests),
- They maintain their magnetic properties even under close interference source,
- A magnet with a shiny nickel surface looks better,
- Magnets are characterized by extremely high magnetic induction on the surface,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures approaching 230°C and above...
- Thanks to versatility in constructing and the capacity to adapt to complex applications,
- Key role in electronics industry – they serve a role in HDD drives, electric drive systems, medical equipment, as well as technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in compact constructions
Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals
- To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (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 extremely resistant to heat
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- We suggest casing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complicated shapes.
- Potential hazard resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these magnets can complicate diagnosis medical in case of swallowing.
- Due to neodymium price, their price is relatively high,
Maximum lifting force for a neodymium magnet – what contributes to it?
The specified lifting capacity concerns the maximum value, measured under ideal test conditions, specifically:
- on a base made of structural steel, perfectly concentrating the magnetic flux
- with a cross-section of at least 10 mm
- with an ideally smooth contact surface
- with total lack of distance (no paint)
- under perpendicular force direction (90-degree angle)
- at temperature approx. 20 degrees Celsius
Determinants of practical lifting force of a magnet
Holding efficiency is influenced by specific conditions, such as (from priority):
- Clearance – the presence of foreign body (paint, tape, gap) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
- Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds much less (often approx. 20-30% of nominal force).
- Plate thickness – insufficiently thick steel does not close the flux, causing part of the flux to be lost to the other side.
- Material composition – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
- Surface quality – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).
* Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under shearing force the load capacity is reduced by as much as 5 times. In addition, even a slight gap {between} the magnet’s surface and the plate decreases the load capacity.
Safe handling of neodymium magnets
Heat warning
Standard neodymium magnets (grade N) lose power when the temperature surpasses 80°C. The loss of strength is permanent.
Safe operation
Handle magnets with awareness. Their huge power can surprise even professionals. Stay alert and do not underestimate their power.
Data carriers
Data protection: Neodymium magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, mechanical watches).
Serious injuries
Protect your hands. Two powerful magnets will join immediately with a force of massive weight, crushing anything in their path. Be careful!
GPS and phone interference
Remember: neodymium magnets generate a field that confuses precision electronics. Keep a separation from your mobile, tablet, and GPS.
Mechanical processing
Powder created during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Allergic reactions
Certain individuals have a contact allergy to Ni, which is the standard coating for NdFeB magnets. Frequent touching might lead to a rash. We suggest wear protective gloves.
Health Danger
Patients with a heart stimulator must maintain an safe separation from magnets. The magnetism can stop the functioning of the implant.
Product not for children
Adult use only. Small elements pose a choking risk, leading to serious injuries. Keep out of reach of children and animals.
Eye protection
Protect your eyes. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.
Safety First!
Need more info? Read our article: Are neodymium magnets dangerous?
