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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

How we measure these parameters — certificates and measurements

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4.00 zł net / pcs

4.92 zł with VAT (23% VAT) / pcs

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Frequently asked questions

Do you make magnets to order?
Yes. We make sizes and shapes outside the catalogue, in grades from N27 to N55 and in high-temperature versions. Lead time depends on the shape and batch size — for rings it is 25–35 days.
Which coating should I choose?
NiCuNi is the standard and covers most applications. Zinc is cheaper and suits dry interiors, epoxy suits damp conditions and outdoor use, gold is chosen where appearance matters. An uncoated magnet corrodes in humid air within a few hours.
Will I receive documentation with my order?
Yes. We issue a REACH statement for the article, a declaration of conformity for the packaging under PPWR, and a certificate of measured magnetic parameters. Documents are issued on request, for a specific article or order number.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical - 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 310 °C
Curie Temperature TF 590 °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 and environmental data

Chemical composition

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
Measurement Calculator

Force (pull)

Field Strength

Input your value in a single field to see the conversion for the other fields at once.

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You will find essential equipment here for building professional mounting systems. We offer, among others: open and closed hooks, eye bolts (shackles), steel plates (washers), and rubber covers. These are essential elements to fully utilize the potential of neodymium magnets in practice.
Thanks to steel plates, you can create a magnetic point on wood, plastic, glass, or wall. 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.
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. Most elements are protected against rust by galvanic zinc.
Rubber caps perform a protective function (against scratches) and anti-slip. We recommend them for mounting on car bodies to not scratch the paint when removing. However, remember that rubber creates a distance, which slightly reduces perpendicular lifting force.
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.

Advantages and disadvantages of Nd2Fe14B magnets.

Benefits

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
  • They are extremely resistant to demagnetization induced by presence of other magnetic fields,
  • In other words, due to the smooth finish of gold, the element looks attractive,
  • Magnetic induction on the surface of the magnet turns out to be maximum,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Thanks to modularity in forming and the ability to customize to specific needs,
  • Significant place in electronics industry – they serve a role in computer drives, brushless drives, advanced medical instruments, and multitasking production systems.
  • Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Disadvantages

What to avoid - cons of neodymium magnets and proposals for their use:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very 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 immune to moisture, in case of application outdoors
  • Due to limitations in realizing nuts and complex forms in magnets, we propose using cover - magnetic mount.
  • Health risk to health – tiny shards of magnets can be dangerous, if swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these products can be problematic in diagnostics medical in case of swallowing.
  • With budget limitations the cost of neodymium magnets can be a barrier,

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

The specified lifting capacity concerns the maximum value, recorded under ideal test conditions, meaning:
  • with the contact of a sheet made of special test steel, ensuring maximum field concentration
  • with a cross-section of at least 10 mm
  • with a plane cleaned and smooth
  • without any air gap between the magnet and steel
  • during pulling in a direction vertical to the plane
  • at conditions approx. 20°C

Determinants of practical lifting force of a magnet

Real force is affected by working environment parameters, including (from most important):
  • Clearance – existence of any layer (rust, dirt, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
  • Chemical composition of the base – low-carbon steel gives the best results. Alloy admixtures lower magnetic properties and holding force.
  • Surface finish – full contact is possible only on smooth steel. Any scratches and bumps create air cushions, reducing force.
  • Temperature – temperature increase results in weakening of force. It is worth remembering the maximum operating temperature for a given model.

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the holding force is lower. Additionally, even a small distance between the magnet and the plate reduces the load capacity.

Safe handling of neodymium magnets
Handling guide

Before starting, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.

Permanent damage

Watch the temperature. Heating the magnet above 80 degrees Celsius will permanently weaken its properties and strength.

Keep away from computers

Device Safety: Neodymium magnets can ruin data carriers and sensitive devices (pacemakers, medical aids, timepieces).

ICD Warning

Warning for patients: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.

Beware of splinters

NdFeB magnets are sintered ceramics, meaning they are very brittle. Clashing of two magnets leads to them cracking into small pieces.

Swallowing risk

These products are not suitable for play. Eating a few magnets may result in them attracting across intestines, which poses a severe health hazard and necessitates immediate surgery.

GPS and phone interference

Remember: neodymium magnets produce a field that interferes with precision electronics. Keep a separation from your phone, device, and navigation systems.

Do not drill into magnets

Fire hazard: Rare earth powder is explosive. Avoid machining magnets in home conditions as this may cause fire.

Allergy Warning

Nickel alert: The Ni-Cu-Ni coating contains nickel. If skin irritation happens, immediately stop working with magnets and wear gloves.

Bodily injuries

Big blocks can crush fingers in a fraction of a second. Under no circumstances place your hand between two attracting surfaces.

Danger! Need more info? Read our article: Why are neodymium magnets dangerous?