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AM ucho [M8] - magnetic accessories

magnetic accessories

Catalog no 080268

GTIN/EAN: 5906301812470

5.00

Weight

53 g

Load capacity

240.00 kg / 2353.60 N

technical details »

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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Give us a call +48 22 499 98 98 otherwise contact us via contact form the contact form page.
Force along with appearance of neodymium magnets can be verified with our our magnetic calculator.

Same-day processing for orders placed before 14:00.

Technical specification of the product - AM ucho [M8] - magnetic accessories

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

properties
properties values
Cat. no. 080268
GTIN/EAN 5906301812470
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 53 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
Elemental analysis
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: 080268-2026
Magnet Unit Converter
Pulling force
Magnetic Field
Insert a value in one of the inputs, to see all other values will recalculate in real-time.

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This category contains replaceable tips, adapters, and fasteners for magnets. We offer, among others: open and closed hooks, eyelet holders, steel plates (washers), and rubber covers. Thanks to these additions, you can adapt any magnetic holder to your individual needs.
Steel plates (washers) allow the use of magnets on non-magnetic surfaces. Just stick the plate in the chosen place using strong 3M tape (often included). It's an ideal solution for closing cabinets, hanging tools, or mounting smoke detectors.
Our accessories are compatible with holders having standard metric threads (ISO). Information about thread size (e.g., M4) can be found in the title and product specification. Most elements are protected against rust by galvanic zinc.
Covers made of thin rubber protect delicate surfaces from scratching by a metal magnet. Use them wherever direct metal contact could damage the surface. An additional layer of rubber weakens attraction slightly but drastically increases shear force (sliding resistance).
We supply manufacturing companies, advertising agencies, and workshops with necessary mounting accessories. For larger orders, we offer attractive discounts and individual quotes. We guarantee continuity of supply and high quality of fasteners.

Pros and cons of rare earth magnets.

Pros

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • They retain attractive force for almost 10 years – the drop is just ~1% (based on simulations),
  • They feature excellent resistance to magnetic field loss due to external magnetic sources,
  • The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
  • Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
  • Due to the potential of accurate molding and customization to individualized solutions, neodymium magnets can be produced in a broad palette of forms and dimensions, which makes them more universal,
  • Universal use in innovative solutions – they are utilized in hard drives, electric drive systems, diagnostic systems, as well as modern systems.
  • Compactness – despite small sizes they generate large force, making them ideal for precision applications

Cons

What to avoid - cons of neodymium magnets: application proposals
  • At strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • Due to limitations in realizing nuts and complicated shapes in magnets, we propose using cover - magnetic mechanism.
  • Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the context of child safety. Additionally, small elements of these products can disrupt the diagnostic process medical after entering the body.
  • Due to neodymium price, their price is higher than average,

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

Holding force of 240.00 kg is a result of laboratory testing performed under specific, ideal conditions:
  • using a sheet made of high-permeability steel, serving as a ideal flux conductor
  • whose transverse dimension reaches at least 10 mm
  • characterized by lack of roughness
  • without any insulating layer between the magnet and steel
  • under perpendicular force vector (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Determinants of lifting force in real conditions

In real-world applications, the real power results from a number of factors, listed from most significant:
  • Clearance – the presence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
  • Material type – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
  • Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Rough surfaces weaken the grip.
  • Temperature – heating the magnet causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.

Safe handling of NdFeB magnets
Operating temperature

Standard neodymium magnets (N-type) lose magnetization when the temperature exceeds 80°C. Damage is permanent.

Finger safety

Risk of injury: The attraction force is so immense that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.

Health Danger

For implant holders: Strong magnetic fields affect medical devices. Maintain at least 30 cm distance or request help to handle the magnets.

Avoid contact if allergic

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction happens, immediately stop handling magnets and use protective gear.

Cards and drives

Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can destroy these devices and erase data from cards.

Do not drill into magnets

Mechanical processing of neodymium magnets poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Beware of splinters

Despite the nickel coating, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Safe operation

Exercise caution. Rare earth magnets act from a long distance and snap with huge force, often quicker than you can react.

Impact on smartphones

Navigation devices and mobile phones are highly susceptible to magnetism. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.

Do not give to children

Neodymium magnets are not toys. Accidental ingestion of several magnets can lead to them attracting across intestines, which constitutes a critical condition and necessitates urgent medical intervention.

Attention! Learn more about risks in the article: Magnet Safety Guide.