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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

product parameters »

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 alternatively contact us via our online form the contact form page.
Weight along with structure of a neodymium magnet can be checked using our modular calculator.

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Product card - 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
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
Magnet Unit Converter
Magnet pull force
Magnetic Field
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In this category, we offer a wide selection of complementary elements for magnetic holders. We offer, among others: various types of hooks, eye bolts (shackles), mounting plates for magnets, and rubber covers. 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. 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. Information about thread size (e.g., M4) can be found in the title and product specification. We offer accessories made of galvanized or stainless steel, resistant to corrosion.
The cap increases friction (coefficient of friction), preventing the magnet from sliding down a vertical wall. 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 fulfill orders for any quantities, from one piece to thousands of items. For larger orders, we offer attractive discounts and individual quotes. Most goods are available off-the-shelf in our warehouse, guaranteeing fast delivery.

Pros and cons of Nd2Fe14B magnets.

Strengths

Besides their high retention, neodymium magnets are valued for these benefits:
  • They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
  • They maintain their magnetic properties even under strong external field,
  • Thanks to the glossy finish, the surface of nickel, gold, or silver-plated gives an modern appearance,
  • Magnets possess extremely high magnetic induction on the working surface,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Possibility of precise forming and adapting to specific requirements,
  • Universal use in electronics industry – they are commonly used in computer drives, electric motors, diagnostic systems, and technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which allows their use in miniature devices

Disadvantages

What to avoid - cons of neodymium magnets and ways of using them
  • At strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
  • Due to limitations in creating nuts and complicated forms in magnets, we propose using a housing - magnetic mount.
  • Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. Furthermore, tiny parts of these devices are able to complicate diagnosis medical in case of swallowing.
  • With large orders the cost of neodymium magnets is a challenge,

Holding force characteristics

Breakaway strength of the magnet in ideal conditions – what contributes to it?

The declared magnet strength represents the peak performance, recorded under ideal test conditions, specifically:
  • with the use of a yoke made of special test steel, ensuring maximum field concentration
  • with a thickness minimum 10 mm
  • characterized by smoothness
  • under conditions of gap-free contact (metal-to-metal)
  • for force acting at a right angle (in the magnet axis)
  • in temp. approx. 20°C

Lifting capacity in practice – influencing factors

In real-world applications, the actual holding force is determined by a number of factors, presented from most significant:
  • Clearance – the presence of foreign body (paint, tape, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
  • Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Chemical composition of the base – mild steel attracts best. Higher carbon content reduce magnetic permeability and lifting capacity.
  • Smoothness – ideal contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Temperature – heating the magnet causes a temporary drop of force. Check the thermal limit for a given model.

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Precautions when working with NdFeB magnets
Life threat

Individuals with a ICD must maintain an absolute distance from magnets. The magnetism can interfere with the functioning of the life-saving device.

Protect data

Very strong magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.

Precision electronics

A strong magnetic field disrupts the functioning of compasses in phones and navigation systems. Do not bring magnets near a device to prevent damaging the sensors.

Risk of cracking

Neodymium magnets are ceramic materials, which means they are prone to chipping. Collision of two magnets leads to them cracking into shards.

Finger safety

Large magnets can crush fingers in a fraction of a second. Never put your hand betwixt two strong magnets.

Conscious usage

Handle with care. Neodymium magnets act from a long distance and connect with massive power, often faster than you can move away.

Choking Hazard

These products are not toys. Eating multiple magnets can lead to them attracting across intestines, which constitutes a direct threat to life and necessitates urgent medical intervention.

Avoid contact if allergic

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction occurs, immediately stop handling magnets and wear gloves.

Do not drill into magnets

Combustion risk: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.

Operating temperature

Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.

Important! More info about risks in the article: Safety of working with magnets.