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AM ucho [M8] - magnetic accessories

magnetic accessories

Catalog no 080268

GTIN/EAN: 5906301812470

5.00
Load capacity 240.00 kg / 2353.60 N
Weight
53 g
see technical 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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Pick up the phone and ask +48 888 99 98 98 otherwise let us know using form our website.
Force as well as appearance of a magnet can be verified on our our magnetic calculator.

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Physical properties - 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
Technical specification and ecology

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
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This category contains replaceable tips, adapters, and fasteners for magnets. We offer, among others: open and closed 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.
The plate serves as a base (armature) to which the magnet will attach. 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.
Rubber caps perform a protective function (against scratches) and anti-slip. 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 fulfill orders for any quantities, from one piece to thousands of items. For B2B clients, we have special trade conditions and deferred payment terms. We guarantee continuity of supply and high quality of fasteners.

Advantages and disadvantages of rare earth magnets.

Benefits

Apart from their consistent magnetism, neodymium magnets have these key benefits:
  • They have stable power, and over nearly ten years their attraction force decreases symbolically – ~1% (according to theory),
  • They possess excellent resistance to magnetic field loss when exposed to opposing magnetic fields,
  • Thanks to the smooth finish, the plating of Ni-Cu-Ni, gold, or silver gives an elegant appearance,
  • The surface of neodymium magnets generates a concentrated magnetic field – this is one of their assets,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of detailed machining as well as adjusting to complex needs,
  • Universal use in future technologies – they find application in hard drives, electromotive mechanisms, medical equipment, also other advanced devices.
  • Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Limitations

Disadvantages of NdFeB magnets:
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a special holder, which not only secures them against impacts but also increases their durability
  • Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
  • We recommend casing - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated shapes.
  • Potential hazard to health – tiny shards of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these products can be problematic in diagnostics medical when they are in the body.
  • Due to neodymium price, their price exceeds standard values,

Holding force characteristics

Maximum lifting force for a neodymium magnet – what contributes to it?

Breakaway force is the result of a measurement for optimal configuration, taking into account:
  • using a base made of mild steel, functioning as a ideal flux conductor
  • possessing a thickness of at least 10 mm to ensure full flux closure
  • characterized by lack of roughness
  • with zero gap (no coatings)
  • during detachment in a direction vertical to the plane
  • in neutral thermal conditions

Determinants of lifting force in real conditions

Real force impacted by working environment parameters, such as (from priority):
  • Space between magnet and steel – every 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 sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Base massiveness – insufficiently thick steel causes magnetic saturation, causing part of the power to be wasted into the air.
  • Material type – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
  • Surface structure – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
  • Temperature – heating the magnet causes a temporary drop of induction. Check 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 attempts to slide the magnet the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate decreases the lifting capacity.

Safety rules for work with NdFeB magnets
Pinching danger

Big blocks can crush fingers instantly. Do not put your hand between two strong magnets.

GPS and phone interference

Navigation devices and smartphones are highly sensitive to magnetism. Close proximity with a strong magnet can permanently damage the internal compass in your phone.

Allergy Warning

A percentage of the population suffer from a contact allergy to nickel, which is the standard coating for neodymium magnets. Extended handling might lead to an allergic reaction. We suggest wear safety gloves.

ICD Warning

Warning for patients: Powerful magnets affect electronics. Maintain minimum 30 cm distance or request help to work with the magnets.

Material brittleness

Watch out for shards. Magnets can fracture upon violent connection, ejecting shards into the air. Wear goggles.

Dust is flammable

Fire warning: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.

Demagnetization risk

Keep cool. Neodymium magnets are sensitive to temperature. If you require resistance above 80°C, look for HT versions (H, SH, UH).

Data carriers

Data protection: Neodymium magnets can damage payment cards and sensitive devices (pacemakers, hearing aids, mechanical watches).

Danger to the youngest

Only for adults. Small elements pose a choking risk, causing intestinal necrosis. Keep away from kids and pets.

Safe operation

Handle magnets with awareness. Their huge power can surprise even professionals. Be vigilant and do not underestimate their force.

Security! Need more info? Read our article: Are neodymium magnets dangerous?