e-mail: bok@dhit.pl

neodymium magnets

We offer blue color magnets Nd2Fe14B - our offer. All "neodymium magnets" on our website are in stock for immediate delivery (check the list). Check out the magnet pricing for more details check the magnet price list

Magnet for water searching F200 GOLD

Where to purchase powerful magnet? Magnetic holders in airtight, solid steel enclosure are ideally suited for use in challenging weather, including during rain and snow see more...

magnetic holders

Magnetic holders can be used to facilitate production, exploring underwater areas, or searching for meteors from gold more...

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UI 39x9x7 [BA] - badge holder

badge holder

Catalog no 150340

GTIN: 5906301813606

5

length [±0,1 mm]

39 mm

Width [±0,1 mm]

9 mm

Height [±0,1 mm]

7 mm

Weight

1 g

0.92 with VAT / pcs + price for transport

0.75 ZŁ net + 23% VAT / pcs

bulk discounts:

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Force as well as structure of magnetic components can be verified with our online calculation tool.

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UI 39x9x7 [BA] - badge holder

Specification/characteristics UI 39x9x7 [BA] - badge holder
properties
values
Cat. no.
150340
GTIN
5906301813606
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
length
39 mm [±0,1 mm]
Width
9 mm [±0,1 mm]
Height
7 mm [±0,1 mm]
Weight
1 g [±0,1 mm]
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material

properties
values
units

Physical properties of NdFeB

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

The most preferred mountings for ID badges include options such as this UI 39x9x7 [BA]. They offer durability and an aesthetic appearance. Magnetic holders are valued as ideal because they are gentle on clothing, are user-friendly, and provide strong badge attachment. A model utilizing efficient neodymium magnets and high-quality adhesive tapes, such as 3M tape, is exceptionally recommended.
No!, magnetic holders are not recommended for individuals with cardiac pacemakers, as the strong magnetic field may disrupt their functioning. In this situation, it is recommended to use alternative fastening methods, and we offer two such types in our range.

Advantages as well as disadvantages of neodymium magnets NdFeB.

In addition to their remarkable field intensity, neodymium magnets offer the following advantages:

  • They virtually do not lose power, because even after ten years, the performance loss is only ~1% (according to literature),
  • They protect against demagnetization induced by surrounding electromagnetic environments very well,
  • By applying a reflective layer of gold, the element gains a sleek look,
  • The outer field strength of the magnet shows elevated magnetic properties,
  • They are suitable for high-temperature applications, operating effectively at 230°C+ due to advanced heat resistance and form-specific properties,
  • The ability for accurate shaping and adjustment to specific needs – neodymium magnets can be manufactured in many forms and dimensions, which enhances their versatility in applications,
  • Key role in cutting-edge sectors – they serve a purpose in hard drives, rotating machines, clinical machines and other advanced devices,
  • Thanks to their efficiency per volume, small magnets offer high magnetic performance, while occupying minimal space,

Disadvantages of rare earth magnets:

  • They can break when subjected to a powerful impact. If the magnets are exposed to shocks, we recommend in a metal holder. The steel housing, in the form of a holder, protects the magnet from cracks , and at the same time enhances its overall resistance,
  • Magnets lose pulling force when exposed to temperatures exceeding 80°C. In most cases, this leads to irreversible field weakening (influenced by the magnet’s profile). To address this, we provide [AH] models with superior thermal resistance, able to operate even at 230°C or more,
  • They rust in a wet environment. If exposed to rain, we recommend using waterproof magnets, such as those made of rubber,
  • The use of a protective casing or external holder is recommended, since machining multi-axis shapes in neodymium magnets is risky,
  • Health risk related to magnet particles may arise, if ingested accidentally, which is important in the family environments. Moreover, miniature parts from these magnets can disrupt scanning when ingested,
  • Higher purchase price is one of the drawbacks compared to ceramic magnets, especially in budget-sensitive applications

Precautions

Dust and powder from neodymium magnets are highly flammable.

Do not attempt to drill into neodymium magnets. Mechanical processing is also not recommended. Once crushed into fine powder or dust, this material becomes highly flammable.

Magnets made of neodymium are noted for their fragility, which can cause them to shatter.

Magnets made of neodymium are highly delicate, and by joining them in an uncontrolled manner, they will crumble. Neodymium magnets are made of metal and coated with a shiny nickel surface, but they are not as hard as steel. At the moment of connection between the magnets, sharp metal fragments can be dispersed in different directions.

Neodymium magnets can demagnetize at high temperatures.

Although magnets have shown to retain their effectiveness up to 80°C or 175°F, this temperature may vary depending on the type of material, shape, and intended use of the magnet.

If you have a nickel allergy, avoid contact with neodymium magnets.

Studies clearly indicate a small percentage of people who suffer from metal allergies such as nickel. An allergic reaction often manifests as skin redness and rash. If you have a nickel allergy, try wearing gloves or avoid direct contact with nickel-plated neodymium magnets.

  Magnets should not be treated as toys. Therefore, it is not recommended for children to have access to them.

Remember that neodymium magnets are not toys. Do not allow children to play with them. Small magnets can pose a serious choking hazard. If multiple magnets are swallowed, they can attract to each other through the intestinal walls, causing severe injuries, and even death.

Neodymium magnets are over 10 times stronger than ferrite magnets (the ones in speakers), and their strength can shock you.

Make sure to review all the information we have provided. This will help you avoid harm to your body and damage to the magnets.

It is crucial not to allow the magnets to pinch together uncontrollably or place your fingers in their path as they attract to each other.

Neodymium magnets jump and clash mutually within a radius of several to almost 10 cm from each other.

Keep neodymium magnets away from people with pacemakers.

In the case of neodymium magnets, there is a strong magnetic field. As a result, it interferes with the operation of a heart pacemaker. However, if the magnetic field does not affect the device, it can damage its components or deactivate the device when it is in a magnetic field.

Keep neodymium magnets away from TV, wallet, and computer HDD.

The strong magnetic field generated by neodymium magnets can destroy magnetic media such as floppy disks, video tapes, HDDs, credit cards, magnetic ID cards, cassette tapes, etc. devices. They can also destroy devices like video players, televisions, CRT computer monitors. Do not forget to keep neodymium magnets at a safe distance from these electronic devices.

Under no circumstances should neodymium magnets be brought close to GPS and smartphones.

Neodymium magnets are a source of strong magnetic fields that cause interference with magnetometers and compasses used in navigation, as well as internal compasses of smartphones and GPS devices.

Be careful!

To raise awareness of why neodymium magnets are so dangerous, read the article titled How very dangerous are very strong neodymium magnets?.

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e-mail: bok@dhit.pl

tel: +48 888 99 98 98