HH 16x5.3 [M3] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370480
GTIN: 5906301814900
Diameter Ø
16 mm [±1 mm]
Height
5.3 mm [±1 mm]
Weight
6.4 g
Magnetization Direction
↑ axial
Load capacity
4 kg / 39.23 N
Coating
[NiCuNi] nickel
3.32 ZŁ with VAT / pcs + price for transport
2.70 ZŁ net + 23% VAT / pcs
bulk discounts:
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Magnetic properties of material N38
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Advantages as well as disadvantages of rare earth magnets.
Besides their magnetic performance, neodymium magnets are valued for these benefits:
- Their strength is maintained, and after approximately 10 years it decreases only by ~1% (theoretically),
- They maintain their magnetic properties even under strong external field,
- In other words, due to the smooth surface of nickel, the element gains a professional look,
- They feature high magnetic induction at the operating surface, which affects their effectiveness,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to the possibility of precise forming and adaptation to custom requirements, magnetic components can be created in a broad palette of forms and dimensions, which amplifies use scope,
- Wide application in future technologies – they find application in data components, drive modules, medical devices, as well as modern systems.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Disadvantages of neodymium magnets:
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in special housings. 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.
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- We suggest casing - magnetic holder, due to difficulties in creating threads inside the magnet and complex shapes.
- Health risk to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, small elements of these magnets can 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 magnetic pulling force – what affects it?
The load parameter shown refers to the limit force, measured under ideal test conditions, namely:
- on a plate made of structural steel, perfectly concentrating the magnetic flux
- whose thickness reaches at least 10 mm
- characterized by even structure
- without any insulating layer between the magnet and steel
- during detachment in a direction vertical to the mounting surface
- in neutral thermal conditions
Impact of factors on magnetic holding capacity in practice
In practice, the actual holding force depends on several key aspects, ranked from crucial:
- Clearance – the presence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Plate thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be wasted to the other side.
- Plate material – mild steel gives the best results. Alloy steels reduce magnetic permeability and lifting capacity.
- Surface finish – ideal contact is possible only on polished steel. Rough texture create air cushions, reducing force.
- Temperature influence – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.
* Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the holding force is lower. Additionally, even a minimal clearance {between} the magnet and the plate lowers the load capacity.
H&S for magnets
ICD Warning
Patients with a heart stimulator should keep an absolute distance from magnets. The magnetic field can disrupt the operation of the life-saving device.
Allergy Warning
Some people have a hypersensitivity to Ni, which is the typical protective layer for NdFeB magnets. Frequent touching might lead to skin redness. It is best to wear safety gloves.
Impact on smartphones
An intense magnetic field negatively affects the operation of magnetometers in phones and navigation systems. Maintain magnets near a device to avoid damaging the sensors.
Beware of splinters
NdFeB magnets are ceramic materials, which means they are fragile like glass. Clashing of two magnets will cause them breaking into shards.
Fire risk
Fire hazard: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.
Safe distance
Device Safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, medical aids, mechanical watches).
Thermal limits
Do not overheat. Neodymium magnets are sensitive to temperature. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).
Crushing risk
Protect your hands. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!
Powerful field
Use magnets with awareness. Their huge power can surprise even professionals. Plan your moves and respect their force.
Swallowing risk
Always keep magnets away from children. Choking hazard is significant, and the consequences of magnets connecting inside the body are life-threatening.
Danger!
More info about hazards in the article: Magnet Safety Guide.
