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neodymium magnets

We provide blue color magnetic Nd2Fe14B - our store's offer. Practically all magnesy on our website are available for immediate delivery (check the list). Check out the magnet price list for more details see the magnet price list

Magnet for water searching F400 GOLD

Where to purchase strong neodymium magnet? Magnetic holders in airtight and durable steel enclosure are excellent for use in challenging weather, including during snow and rain read

magnetic holders

Holders with magnets can be used to enhance production, exploring underwater areas, or locating meteors made of metal see more...

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Dhit sp. z o.o.
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MW 5x30 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010088

GTIN: 5906301810872

5

Diameter Ø

5 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

4.42 g

Magnetization Direction

↑ axial

Load capacity

8.29 kg / 81.3 N

Magnetic Induction

616.32 mT

Coating

[NiCuNi] nickel

3.57 with VAT / pcs + price for transport

2.90 ZŁ net + 23% VAT / pcs

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Parameters along with form of a neodymium magnet can be tested with our modular calculator.

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MW 5x30 / N38 - cylindrical magnet
Specification/characteristics MW 5x30 / N38 - cylindrical magnet
properties
values
Cat. no.
010088
GTIN
5906301810872
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
5 mm [±0,1 mm]
Height
30 mm [±0,1 mm]
Weight
4.42 g
Magnetization Direction
↑ axial
Load capacity ~ ?
8.29 kg / 81.3 N
Magnetic Induction ~ ?
616.32 mT
Coating
[NiCuNi] nickel
Manufacturing Tolerance
±0.1 mm

Magnetic properties of material N38

properties
values
units
remenance Br [Min. - Max.] ?
12.2-12.6
kGs
remenance Br [Min. - Max.] ?
1220-1260
T
coercivity bHc ?
10.8-11.5
kOe
coercivity bHc ?
860-915
kA/m
actual internal force iHc
≥ 12
kOe
actual internal force iHc
≥ 955
kA/m
energy density [Min. - Max.] ?
36-38
BH max MGOe
energy density [Min. - Max.] ?
287-303
BH max KJ/m
max. temperature ?
≤ 80
°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

properties
values
units
Vickers hardness
≥550
Hv
Density
≥7.4
g/cm3
Curie Temperature TC
312 - 380
°C
Curie Temperature TF
593 - 716
°F
Specific resistance
150
μΩ⋅Cm
Bending strength
250
Mpa
Compressive strength
1000~1100
Mpa
Thermal expansion parallel (∥) to orientation (M)
(3-4) x 106
°C-1
Thermal expansion perpendicular (⊥) to orientation (M)
-(1-3) x 10-6
°C-1
Young's modulus
1.7 x 104
kg/mm²

Shopping tips

This product is an incredibly powerful cylinder magnet, composed of modern NdFeB material, which, with dimensions of Ø5x30 mm, guarantees the highest energy density. The MW 5x30 / N38 model is characterized by a tolerance of ±0.1mm and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 8.29 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Furthermore, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the pull force of 81.3 N with a weight of only 4.42 g, this rod is indispensable in miniature devices and wherever every gram matters.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.
Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and high resistance to demagnetization. If you need the strongest magnets in the same volume (Ø5x30), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 30 mm. The key parameter here is the lifting capacity amounting to approximately 8.29 kg (force ~81.3 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 30 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized through the diameter if your project requires it.

Advantages as well as disadvantages of NdFeB magnets.

Besides their remarkable pulling force, neodymium magnets offer the following advantages:

  • They do not lose power, even over nearly ten years – the decrease in power is only ~1% (based on measurements),
  • Neodymium magnets are characterized by remarkably resistant to loss of magnetic properties caused by external field sources,
  • In other words, due to the shiny finish of silver, the element is aesthetically pleasing,
  • They show high magnetic induction at the operating surface, which improves attraction properties,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Possibility of accurate shaping and adjusting to individual needs,
  • Fundamental importance in modern industrial fields – they are utilized in magnetic memories, electric drive systems, diagnostic systems, as well as modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in compact constructions

Drawbacks and weaknesses of neodymium magnets: application proposals

  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
  • We warn that neodymium magnets can lose their power 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 recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • We suggest cover - magnetic mechanism, due to difficulties in producing threads inside the magnet and complex forms.
  • Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child health protection. Additionally, small components of these magnets can complicate diagnosis medical after entering the body.
  • With large orders the cost of neodymium magnets is a challenge,

Maximum lifting force for a neodymium magnet – what affects it?

Holding force of 8.29 kg is a theoretical maximum value conducted under specific, ideal conditions:

  • using a plate made of high-permeability steel, serving as a ideal flux conductor
  • whose thickness equals approx. 10 mm
  • with a surface perfectly flat
  • without any insulating layer between the magnet and steel
  • during pulling in a direction perpendicular to the plane
  • at ambient temperature room level

Key elements affecting lifting force

Effective lifting capacity is influenced by working environment parameters, such as (from priority):

  • Space between surfaces – every millimeter of distance (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
  • Load vector – maximum parameter is reached only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Metal type – not every steel reacts the same. Alloy additives weaken the attraction effect.
  • Surface condition – ground elements ensure maximum contact, which improves field saturation. Uneven metal weaken the grip.
  • Thermal environment – heating the magnet results in weakening of force. It is worth remembering the maximum operating temperature for a given model.

* Lifting capacity was measured with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance {between} the magnet and the plate lowers the holding force.

Safe handling of neodymium magnets

Finger safety

Protect your hands. Two large magnets will snap together immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Threat to electronics

Device Safety: Strong magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).

Product not for children

Adult use only. Tiny parts can be swallowed, causing serious injuries. Keep out of reach of kids and pets.

GPS and phone interference

Remember: neodymium magnets generate a field that confuses precision electronics. Maintain a safe distance from your mobile, tablet, and navigation systems.

Combustion hazard

Dust generated during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Implant safety

Patients with a pacemaker should keep an absolute distance from magnets. The magnetism can stop the functioning of the life-saving device.

Shattering risk

Watch out for shards. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.

Nickel allergy

Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, refrain from touching magnets with bare hands and opt for versions in plastic housing.

Do not underestimate power

Before starting, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Power loss in heat

Standard neodymium magnets (N-type) lose power when the temperature goes above 80°C. Damage is permanent.

Attention!

Want to know more? Check our post: Why are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98