MW 14x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010391
GTIN: 5906301811084
Diameter Ø [±0,1 mm]
14 mm
Height [±0,1 mm]
10 mm
Weight
11.55 g
Magnetization Direction
↑ axial
Load capacity
7.74 kg / 75.9 N
Magnetic Induction
507.48 mT
Coating
[NiCuNi] nickel
6.84 ZŁ with VAT / pcs + price for transport
5.56 ZŁ net + 23% VAT / pcs
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Magnetic properties of material N38
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Strengths and weaknesses of rare earth magnets.
Besides their exceptional field intensity, neodymium magnets offer the following advantages:
- They do not lose strength, even over around 10 years – the drop in power is only ~1% (based on measurements),
- Magnets very well protect themselves against loss of magnetization caused by external fields,
- In other words, due to the metallic layer of nickel, the element gains a professional look,
- The surface of neodymium magnets generates a powerful magnetic field – this is one of their assets,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to versatility in shaping and the capacity to customize to complex applications,
- Versatile presence in modern industrial fields – they serve a role in data components, electromotive mechanisms, precision medical tools, as well as modern systems.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons of neodymium magnets: application proposals
- At strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Limited ability of producing threads in the magnet and complex shapes - preferred is cover - mounting mechanism.
- Health risk related to microscopic parts of magnets can be dangerous, if swallowed, which becomes key in the context of child safety. Additionally, small elements of these products are able to complicate diagnosis medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Maximum lifting force for a neodymium magnet – what affects it?
The lifting capacity listed is a result of laboratory testing executed under specific, ideal conditions:
- with the use of a yoke made of low-carbon steel, ensuring maximum field concentration
- possessing a massiveness of at least 10 mm to avoid saturation
- with a surface free of scratches
- without any air gap between the magnet and steel
- under perpendicular application of breakaway force (90-degree angle)
- in temp. approx. 20°C
Magnet lifting force in use – key factors
Effective lifting capacity impacted by specific conditions, mainly (from priority):
- Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
- Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of maximum force).
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Steel type – mild steel attracts best. Alloy steels decrease magnetic properties and holding force.
- Smoothness – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
- Thermal factor – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.
* Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the holding force is lower. Moreover, even a minimal clearance {between} the magnet’s surface and the plate reduces the holding force.
Warnings
Heat sensitivity
Regular neodymium magnets (grade N) lose power when the temperature exceeds 80°C. This process is irreversible.
Life threat
Warning for patients: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or ask another person to work with the magnets.
Precision electronics
Navigation devices and mobile phones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.
Nickel coating and allergies
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If skin irritation happens, cease working with magnets and use protective gear.
Swallowing risk
Strictly store magnets away from children. Risk of swallowing is significant, and the consequences of magnets clamping inside the body are tragic.
Fire warning
Dust generated during machining of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.
Material brittleness
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Electronic devices
Device Safety: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, hearing aids, timepieces).
Crushing force
Protect your hands. Two powerful magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Be careful!
Conscious usage
Exercise caution. Neodymium magnets act from a long distance and snap with massive power, often quicker than you can react.
Security!
Details about hazards in the article: Magnet Safety Guide.
