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neodymium magnets

We provide red color magnetic Nd2Fe14B - our offer. Practically all magnesy on our website are available for immediate delivery (see the list). See the magnet price list for more details see the magnet price list

Magnet for water searching F400 GOLD

Where to purchase powerful neodymium magnet? Holders with magnets in airtight, solid steel casing are ideally suited for use in challenging weather, including snow and rain more information...

magnets with holders

Magnetic holders can be used to facilitate production, underwater exploration, or searching for space rocks made of ore see more...

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Dhit sp. z o.o.
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AM ucho [M8] - magnetic accessories

magnetic accessories

Catalog no 080268

GTIN: 5906301812470

5

Weight

53 g

Load capacity

240 kg / 2353.6 N

4.92 with VAT / pcs + price for transport

4.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
4.00 ZŁ
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price from 300 pcs
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4.43 ZŁ

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Contact us by phone +48 22 499 98 98 alternatively send us a note by means of request form through our site.
Strength along with appearance of a neodymium magnet can be estimated on our magnetic calculator.

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AM ucho [M8] - magnetic accessories
Specification/characteristics AM ucho [M8] - magnetic accessories
properties
values
Cat. no.
080268
GTIN
5906301812470
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Weight
53 g [±0,1 mm]
Load capacity ~ ?
240 kg / 2353.6 N
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material

properties
values
units

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 category contains replaceable tips, adapters, and fasteners for magnets. We offer, among others: various types of hooks, eyelet holders, mounting plates for magnets, and rubber covers. These are essential elements to fully utilize the potential of neodymium magnets in practice.
The plate serves as a base (armature) to which the magnet will attach. Just stick the plate in the chosen place using strong 3M tape (often included). This enables creating magnetic closures anywhere in the home and office.
Our accessories are compatible with holders having standard metric threads (ISO). Before purchase, check the thread size in your magnetic holder (it is given in the description). Most elements are protected against rust by galvanic zinc.
Rubber caps perform a protective function (against scratches) and anti-slip. Use them wherever direct metal contact could damage the surface. Surface safety comes at the cost of a small loss of nominal power.
We fulfill orders for any quantities, from one piece to thousands of items. For B2B clients, we have special trade conditions and deferred payment terms. Most goods are available off-the-shelf in our warehouse, guaranteeing fast delivery.

Strengths as well as weaknesses of rare earth magnets.

Apart from their consistent holding force, neodymium magnets have these key benefits:

  • Their magnetic field is maintained, and after around ten years it drops only by ~1% (according to research),
  • They are extremely resistant to demagnetization induced by external field influence,
  • A magnet with a shiny silver surface has an effective appearance,
  • They are known for high magnetic induction at the operating surface, which improves attraction properties,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Possibility of custom shaping as well as optimizing to concrete conditions,
  • Versatile presence in advanced technology sectors – they are utilized in HDD drives, motor assemblies, advanced medical instruments, as well as technologically advanced constructions.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Disadvantages of neodymium magnets:

  • To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in creating threads and complicated forms in magnets, we recommend using cover - magnetic holder.
  • Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child health protection. Furthermore, small components of these devices can be problematic in diagnostics medical when they are in the body.
  • Due to complex production process, their price is higher than average,

Best holding force of the magnet in ideal parameterswhat affects it?

The declared magnet strength refers to the peak performance, obtained under laboratory conditions, specifically:

  • with the use of a yoke made of special test steel, guaranteeing maximum field concentration
  • possessing a thickness of at least 10 mm to avoid saturation
  • with an polished contact surface
  • with direct contact (no impurities)
  • under perpendicular force direction (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Practical lifting capacity: influencing factors

In real-world applications, the actual holding force is determined by many variables, ranked from the most important:

  • Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
  • Plate material – mild steel attracts best. Alloy admixtures reduce magnetic permeability and lifting capacity.
  • Surface quality – the more even the plate, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
  • Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).

* Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the load capacity is reduced by as much as 5 times. Moreover, even a minimal clearance {between} the magnet and the plate decreases the load capacity.

Safe handling of neodymium magnets

Serious injuries

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

Danger to pacemakers

Warning for patients: Powerful magnets disrupt electronics. Keep at least 30 cm distance or request help to handle the magnets.

Respect the power

Be careful. Neodymium magnets act from a long distance and connect with massive power, often faster than you can react.

Heat warning

Avoid heat. Neodymium magnets are sensitive to heat. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).

Shattering risk

Despite metallic appearance, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may crumble into hazardous fragments.

Precision electronics

An intense magnetic field disrupts the operation of compasses in smartphones and GPS navigation. Keep magnets close to a device to avoid damaging the sensors.

Swallowing risk

NdFeB magnets are not suitable for play. Accidental ingestion of multiple magnets may result in them pinching intestinal walls, which poses a critical condition and necessitates immediate surgery.

Magnetic media

Very strong magnetic fields can destroy records on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Machining danger

Fire warning: Neodymium dust is explosive. Do not process magnets in home conditions as this may cause fire.

Nickel allergy

Medical facts indicate that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, avoid direct skin contact and select versions in plastic housing.

Danger!

Need more info? Check our post: Are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98