AM ucho [M12] - magnetic accessories
magnetic accessories
Catalog no 080347
GTIN: 5906301812500
Weight
101.5 g
Load capacity
480 kg / 4707.19 N
9.84 ZŁ with VAT / pcs + price for transport
8.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Magnetic properties of material
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Pros as well as cons of rare earth magnets.
Besides their durability, neodymium magnets are valued for these benefits:
- They retain magnetic properties for almost ten years – the drop is just ~1% (based on simulations),
- Magnets perfectly protect themselves against demagnetization caused by external fields,
- By using a lustrous coating of gold, the element presents an modern look,
- Magnetic induction on the top side of the magnet turns out to be extremely intense,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of custom creating as well as adjusting to precise needs,
- Key role in modern industrial fields – they serve a role in computer drives, electric drive systems, precision medical tools, also multitasking production systems.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Disadvantages of neodymium magnets:
- Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their durability
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in creating nuts and complicated shapes in magnets, we recommend using cover - magnetic mechanism.
- Health risk to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that small elements of these devices are able to complicate diagnosis medical in case of swallowing.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Maximum lifting force for a neodymium magnet – what affects it?
Holding force of 480 kg is a theoretical maximum value executed under the following configuration:
- with the contact of a sheet made of low-carbon steel, ensuring maximum field concentration
- whose thickness reaches at least 10 mm
- with a surface perfectly flat
- under conditions of no distance (surface-to-surface)
- during pulling in a direction perpendicular to the mounting surface
- in temp. approx. 20°C
Lifting capacity in real conditions – factors
Please note that the magnet holding will differ depending on the following factors, in order of importance:
- Clearance – existence of any layer (paint, tape, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
- Steel type – low-carbon steel attracts best. Alloy admixtures lower magnetic properties and lifting capacity.
- Base smoothness – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
- Heat – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).
* Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Additionally, even a small distance {between} the magnet’s surface and the plate reduces the load capacity.
Safe handling of neodymium magnets
Serious injuries
Watch your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Be careful!
Maximum temperature
Do not overheat. NdFeB magnets are sensitive to temperature. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).
Swallowing risk
Neodymium magnets are not suitable for play. Eating a few magnets may result in them attracting across intestines, which poses a critical condition and necessitates urgent medical intervention.
Do not underestimate power
Be careful. Neodymium magnets act from a long distance and connect with massive power, often faster than you can react.
Keep away from computers
Device Safety: Strong magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).
Mechanical processing
Powder produced during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.
Danger to pacemakers
For implant holders: Strong magnetic fields affect electronics. Keep at least 30 cm distance or ask another person to handle the magnets.
GPS Danger
Navigation devices and smartphones are extremely sensitive to magnetism. Close proximity with a strong magnet can ruin the sensors in your phone.
Risk of cracking
Neodymium magnets are ceramic materials, meaning they are very brittle. Clashing of two magnets leads to them shattering into shards.
Skin irritation risks
Studies show that nickel (standard magnet coating) is a potent allergen. If your skin reacts to metals, prevent direct skin contact and select coated magnets.
Important!
Learn more about hazards in the article: Safety of working with magnets.
