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AM ucho małe [M8] - magnetic accessories

magnetic accessories

Catalog no 080345

GTIN/EAN: 5906301812487

5.00

Weight

27 g

Load capacity

240.00 kg / 2353.60 N

see specifications »

4.92 ZŁ with VAT / pcs + price for transport

4.00 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety
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Force along with appearance of a magnet can be tested using our magnetic calculator.

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Technical - AM ucho małe [M8] - magnetic accessories

Specification / characteristics - AM ucho małe [M8] - magnetic accessories

properties
properties values
Cat. no. 080345
GTIN/EAN 5906301812487
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Weight 27 g
Load capacity ~ ? 240.00 kg / 2353.60 N
Manufacturing Tolerance ±1 mm

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°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 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²
Engineering data and GPSR
Material specification
iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%
Environmental data
recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 080345-2026
Measurement Calculator
Magnet pull force
Magnetic Field
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This category contains replaceable tips, adapters, and fasteners for magnets. We offer, among others: various types of hooks, eye bolts (shackles), mounting plates for magnets, and rubber anti-slip caps. Thanks to these additions, you can adapt any magnetic holder to your individual needs.
Thanks to steel plates, you can create a magnetic point on wood, plastic, glass, or wall. After fixing the plate, you gain a place where the magnet will hold just like on a fridge. This enables creating magnetic closures anywhere in the home and office.
Elements are standardized according to metric standard, facilitating selection. It is important to select a hook or screw with the same thread diameter as the socket in the magnet. We offer accessories made of galvanized or stainless steel, resistant to corrosion.
Covers made of thin rubber protect delicate surfaces from scratching by a metal magnet. Use them wherever direct metal contact could damage the surface. Surface safety comes at the cost of a small loss of nominal power.
Yes, as a direct importer, we serve both retail and wholesale customers. Contact us to get a wholesale offer for hooks and holders. Most goods are available off-the-shelf in our warehouse, guaranteeing fast delivery.

Advantages and disadvantages of neodymium magnets.

Strengths

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (according to literature),
  • Neodymium magnets are characterized by exceptionally resistant to loss of magnetic properties caused by external field sources,
  • Thanks to the shiny finish, the plating of Ni-Cu-Ni, gold-plated, or silver gives an modern appearance,
  • Magnetic induction on the top side of the magnet turns out to be maximum,
  • Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
  • Due to the possibility of free molding and customization to unique projects, magnetic components can be manufactured in a broad palette of geometric configurations, which amplifies use scope,
  • Fundamental importance in modern technologies – they are used in HDD drives, drive modules, medical devices, as well as industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices

Limitations

Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of creating threads in the magnet and complicated forms - preferred is a housing - mounting mechanism.
  • Potential hazard resulting from small fragments of magnets are risky, if swallowed, which becomes key in the context of child safety. Furthermore, small components of these products can disrupt the diagnostic process medical after entering the body.
  • Due to neodymium price, their price is relatively high,

Lifting parameters

Highest magnetic holding force – what affects it?

Information about lifting capacity was determined for optimal configuration, assuming:
  • with the use of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
  • with a thickness minimum 10 mm
  • with a surface cleaned and smooth
  • without the slightest clearance between the magnet and steel
  • under vertical application of breakaway force (90-degree angle)
  • in stable room temperature

What influences lifting capacity in practice

Effective lifting capacity impacted by working environment parameters, including (from priority):
  • Gap between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
  • Material type – ideal substrate is high-permeability steel. Stainless steels may have worse magnetic properties.
  • Surface finish – ideal contact is possible only on smooth steel. Any scratches and bumps create air cushions, reducing force.
  • Temperature – heating the magnet causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity was determined with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate lowers the lifting capacity.

Safe handling of neodymium magnets
Heat sensitivity

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will destroy its properties and pulling force.

Fire risk

Combustion risk: Neodymium dust is explosive. Do not process magnets in home conditions as this risks ignition.

Handling rules

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

Skin irritation risks

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If skin irritation occurs, immediately stop working with magnets and use protective gear.

Keep away from electronics

A strong magnetic field interferes with the functioning of compasses in smartphones and navigation systems. Keep magnets near a smartphone to prevent breaking the sensors.

Life threat

Individuals with a pacemaker should keep an large gap from magnets. The magnetic field can interfere with the operation of the implant.

Magnet fragility

Beware of splinters. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Wear goggles.

Electronic devices

Device Safety: Strong magnets can ruin payment cards and sensitive devices (pacemakers, medical aids, mechanical watches).

Finger safety

Big blocks can break fingers in a fraction of a second. Under no circumstances put your hand between two strong magnets.

No play value

Always store magnets away from children. Ingestion danger is high, and the consequences of magnets connecting inside the body are fatal.

Safety First! Learn more about hazards in the article: Magnet Safety Guide.