MW 5x15 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010084
GTIN: 5906301810834
Diameter Ø
5 mm [±0,1 mm]
Height
15 mm [±0,1 mm]
Weight
2.21 g
Magnetization Direction
↑ axial
Load capacity
4.15 kg / 40.7 N
Magnetic Induction
610.03 mT
Coating
[NiCuNi] nickel
1.107 ZŁ with VAT / pcs + price for transport
0.900 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?Looking for a better price?
Call us
+48 22 499 98 98
alternatively contact us using
contact form
the contact section.
Weight and structure of magnetic components can be verified using our
online calculation tool.
Same-day processing for orders placed before 14:00.
Magnetic properties of material N38
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Strengths as well as weaknesses of neodymium magnets.
In addition to their long-term stability, neodymium magnets provide the following advantages:
- Their strength is maintained, and after approximately 10 years it decreases only by ~1% (according to research),
- Neodymium magnets are characterized by exceptionally resistant to loss of magnetic properties caused by external field sources,
- By applying a lustrous coating of silver, the element gains an aesthetic look,
- They feature high magnetic induction at the operating surface, making them more effective,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Thanks to the ability of flexible shaping and adaptation to unique projects, neodymium magnets can be modeled in a variety of shapes and sizes, which makes them more universal,
- Universal use in modern industrial fields – they serve a role in mass storage devices, motor assemblies, advanced medical instruments, also complex engineering applications.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Disadvantages of NdFeB magnets:
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Limited ability of making threads in the magnet and complicated forms - preferred is casing - magnetic holder.
- Health risk to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. Additionally, tiny parts of these products can disrupt the diagnostic process medical in case of swallowing.
- Due to neodymium price, their price is higher than average,
Magnetic strength at its maximum – what it depends on?
Holding force of 4.15 kg is a theoretical maximum value conducted under standard conditions:
- with the use of a sheet made of special test steel, guaranteeing maximum field concentration
- with a thickness minimum 10 mm
- characterized by lack of roughness
- with direct contact (no paint)
- for force applied at a right angle (in the magnet axis)
- at ambient temperature room level
Impact of factors on magnetic holding capacity in practice
Please note that the application force will differ subject to the following factors, in order of importance:
- Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Steel type – low-carbon steel attracts best. Alloy admixtures lower magnetic properties and holding force.
- Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
- Thermal environment – temperature increase causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.
* Lifting capacity testing was conducted on a smooth plate of suitable thickness, under perpendicular forces, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a small distance {between} the magnet and the plate decreases the load capacity.
H&S for magnets
Adults only
These products are not intended for children. Eating a few magnets can lead to them pinching intestinal walls, which poses a critical condition and necessitates immediate surgery.
Protect data
Powerful magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.
Crushing force
Mind your fingers. Two powerful magnets will snap together immediately with a force of massive weight, destroying anything in their path. Be careful!
Do not underestimate power
Before starting, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.
Fire warning
Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.
Warning for allergy sufferers
Nickel alert: The Ni-Cu-Ni coating contains nickel. If an allergic reaction appears, cease working with magnets and wear gloves.
Magnetic interference
A powerful magnetic field interferes with the functioning of magnetometers in phones and GPS navigation. Maintain magnets close to a smartphone to avoid breaking the sensors.
Danger to pacemakers
Warning for patients: Powerful magnets affect electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.
Thermal limits
Keep cool. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).
Beware of splinters
Despite the nickel coating, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.
Attention!
Need more info? Read our article: Why are neodymium magnets dangerous?
