SM 32x225 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130375
GTIN: 5906301813231
Diameter Ø [±0,1 mm]
32 mm
Height [±0,1 mm]
225 mm
Weight
1245 g
750.30 ZŁ with VAT / pcs + price for transport
610.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Magnetic properties of material N42
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Strengths as well as weaknesses of neodymium magnets.
Besides their exceptional strength, neodymium magnets offer the following advantages:
- Their strength remains stable, and after approximately ten years it decreases only by ~1% (theoretically),
- Magnets effectively defend themselves against demagnetization caused by foreign field sources,
- The use of an aesthetic layer of noble metals (nickel, gold, silver) causes the element to present itself better,
- Neodymium magnets generate maximum magnetic induction on a contact point, which allows for strong attraction,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Possibility of exact machining as well as adapting to individual requirements,
- Fundamental importance in future technologies – they are utilized in mass storage devices, electromotive mechanisms, precision medical tools, as well as complex engineering applications.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Drawbacks and weaknesses of neodymium magnets and proposals for their use:
- To avoid cracks under impact, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
- Limited possibility of making nuts in the magnet and complicated forms - recommended is cover - mounting mechanism.
- Health risk resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small components of these magnets can disrupt the diagnostic process medical when they are in the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Optimal lifting capacity of a neodymium magnet – what affects it?
Magnet power was defined for the most favorable conditions, assuming:
- using a plate made of low-carbon steel, serving as a ideal flux conductor
- whose thickness is min. 10 mm
- with a surface cleaned and smooth
- without the slightest clearance between the magnet and steel
- for force applied at a right angle (in the magnet axis)
- at conditions approx. 20°C
What influences lifting capacity in practice
Holding efficiency impacted by specific conditions, including (from most important):
- Space between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
- Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures lower magnetic permeability and lifting capacity.
- Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
- Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.
* Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the load capacity is reduced by as much as 5 times. Moreover, even a small distance {between} the magnet’s surface and the plate reduces the holding force.
Safe handling of NdFeB magnets
Pinching danger
Large magnets can break fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.
Electronic devices
Powerful magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.
Fire warning
Powder generated during grinding of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.
Magnets are brittle
Beware of splinters. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.
This is not a toy
Adult use only. Tiny parts pose a choking risk, leading to serious injuries. Keep out of reach of kids and pets.
Caution required
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.
Nickel allergy
Studies show that nickel (the usual finish) is a common allergen. If you have an allergy, avoid direct skin contact and select versions in plastic housing.
Medical interference
Individuals with a heart stimulator must keep an absolute distance from magnets. The magnetic field can stop the operation of the life-saving device.
Impact on smartphones
GPS units and smartphones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can decalibrate the internal compass in your phone.
Maximum temperature
Do not overheat. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).
Danger!
More info about hazards in the article: Safety of working with magnets.
