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neodymium magnets

We offer blue color magnetic Nd2Fe14B - our offer. Practically all magnesy neodymowe in our store are in stock for immediate delivery (check the list). See the magnet price list for more details check the magnet price list

Magnet for water searching F300 GOLD

Where to buy powerful neodymium magnet? Magnet holders in solid and airtight steel casing are ideally suited for use in difficult, demanding weather, including snow and rain more

magnetic holders

Magnetic holders can be applied to facilitate production, underwater discoveries, or locating space rocks made of ore read...

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MW 8x15 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010102

GTIN: 5906301811015

5

Diameter Ø [±0,1 mm]

8 mm

Height [±0,1 mm]

15 mm

Weight

5.65 g

Magnetization Direction

↑ axial

Load capacity

6.64 kg / 65.12 N

Magnetic Induction

598.12 mT

Coating

[NiCuNi] nickel

3.44 with VAT / pcs + price for transport

2.80 ZŁ net + 23% VAT / pcs

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MW 8x15 / N38 - cylindrical magnet
Specification/characteristics MW 8x15 / N38 - cylindrical magnet
properties
values
Cat. no.
010102
GTIN
5906301811015
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
8 mm [±0,1 mm]
Height
15 mm [±0,1 mm]
Weight
5.65 g [±0,1 mm]
Magnetization Direction
↑ axial
Load capacity ~ ?
6.64 kg / 65.12 N
Magnetic Induction ~ ?
598.12 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 extremely powerful rod magnet, made from durable NdFeB material, which, with dimensions of Ø8x15 mm, guarantees maximum efficiency. This specific item is characterized by an accuracy of ±0.1mm and industrial build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 6.64 kg), this product is available off-the-shelf from our European logistics center, ensuring lightning-fast order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.
This model is ideal for building electric motors, advanced Hall effect sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 65.12 N with a weight of only 5.65 g, this cylindrical magnet is indispensable in miniature devices and wherever every gram matters.
Since our magnets have a tolerance of ±0.1mm, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 8.1 mm) using epoxy glues. To ensure long-term durability in industry, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability 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 (Ø8x15), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.
The presented product is a neodymium magnet with precisely defined parameters: diameter 8 mm and height 15 mm. The value of 65.12 N means that the magnet is capable of holding a weight many times exceeding its own mass of 5.65 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.
This rod magnet is magnetized axially (along the height of 15 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Pros as well as cons of rare earth magnets.

Besides their high retention, neodymium magnets are valued for these benefits:

  • They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
  • Magnets perfectly resist against loss of magnetization caused by foreign field sources,
  • Thanks to the reflective finish, the coating of Ni-Cu-Ni, gold, or silver gives an elegant appearance,
  • Magnets are distinguished by extremely high magnetic induction on the outer layer,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
  • Possibility of exact creating and adapting to defined applications,
  • Versatile presence in innovative solutions – they are commonly used in data components, electric motors, medical devices, as well as other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages of neodymium magnets:

  • At very strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
  • Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • We suggest a housing - magnetic holder, due to difficulties in producing nuts inside the magnet and complex shapes.
  • Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. Additionally, small elements of these devices are able to complicate diagnosis medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Maximum magnetic pulling forcewhat contributes to it?

The lifting capacity listed is a theoretical maximum value executed under standard conditions:

  • on a block made of mild steel, effectively closing the magnetic flux
  • with a cross-section minimum 10 mm
  • with a plane perfectly flat
  • with total lack of distance (no paint)
  • under axial application of breakaway force (90-degree angle)
  • at standard ambient temperature

Lifting capacity in practice – influencing factors

It is worth knowing that the working load may be lower subject to elements below, in order of importance:

  • Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds much less (often approx. 20-30% of maximum force).
  • Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Metal type – not every steel attracts identically. High carbon content worsen the attraction effect.
  • Surface condition – smooth surfaces ensure maximum contact, which improves force. Uneven metal weaken the grip.
  • Temperature influence – hot environment weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.

* Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under shearing force the holding force is lower. Moreover, even a slight gap {between} the magnet’s surface and the plate reduces the load capacity.

Precautions when working with NdFeB magnets

Fire risk

Mechanical processing of neodymium magnets poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

No play value

Adult use only. Tiny parts pose a choking risk, leading to intestinal necrosis. Store away from children and animals.

Compass and GPS

GPS units and mobile phones are highly sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.

Eye protection

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Collision of two magnets leads to them shattering into shards.

Crushing force

Large magnets can crush fingers in a fraction of a second. Never put your hand betwixt two strong magnets.

Health Danger

Medical warning: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.

Power loss in heat

Standard neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. This process is irreversible.

Allergy Warning

Nickel alert: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, immediately stop handling magnets and wear gloves.

Handling guide

Before use, read the rules. Sudden snapping can break the magnet or hurt your hand. Think ahead.

Magnetic media

Data protection: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, medical aids, timepieces).

Attention!

More info about hazards in the article: Magnet Safety Guide.

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98