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AM ucho [M12] - magnetic accessories

magnetic accessories

Catalog no 080347

GTIN/EAN: 5906301812500

5.00

Weight

101.5 g

Load capacity

480.00 kg / 4707.19 N

9.84 with VAT / pcs + price for transport

8.00 ZŁ net + 23% VAT / pcs

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Product card - AM ucho [M12] - magnetic accessories

Specification / characteristics - AM ucho [M12] - magnetic accessories

properties
properties values
Cat. no. 080347
GTIN/EAN 5906301812500
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 101.5 g
Load capacity ~ ? 480.00 kg / 4707.19 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 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: 080347-2026
Measurement Calculator
Force (pull)

Magnetic Induction

Other proposals

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 covers. These are essential elements to fully utilize the potential of neodymium magnets in practice.
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.
Our accessories are compatible with holders having standard metric threads (ISO). Before purchase, check the thread size in your magnetic holder (it is given in the description). 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. They are ideal when you want to attach a magnet to car paint, a fridge, or furniture. 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. Contact us to get a wholesale offer for hooks and holders. We guarantee continuity of supply and high quality of fasteners.

Strengths and weaknesses of neodymium magnets.

Benefits

Apart from their superior holding force, neodymium magnets have these key benefits:
  • Their magnetic field remains stable, and after approximately ten years it decreases only by ~1% (theoretically),
  • They feature excellent resistance to weakening of magnetic properties as a result of external fields,
  • In other words, due to the metallic finish of nickel, the element gains visual value,
  • Neodymium magnets create maximum magnetic induction on a contact point, which increases force concentration,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures approaching 230°C and above...
  • In view of the possibility of free shaping and customization to individualized requirements, NdFeB magnets can be modeled in a broad palette of forms and dimensions, which expands the range of possible applications,
  • Versatile presence in future technologies – they serve a role in hard drives, brushless drives, diagnostic systems, and complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices

Cons

Drawbacks and weaknesses of neodymium magnets and ways of using them
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only secures them against impacts but also raises their durability
  • Neodymium magnets lose strength 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 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 cover - magnetic holder, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child safety. Furthermore, small elements of these products can disrupt the diagnostic process medical when they are in the body.
  • With large orders the cost of neodymium magnets is a challenge,

Lifting parameters

Magnetic strength at its maximum – what contributes to it?

The declared magnet strength concerns the limit force, obtained under laboratory conditions, specifically:
  • with the use of a yoke made of low-carbon steel, guaranteeing maximum field concentration
  • with a cross-section no less than 10 mm
  • characterized by even structure
  • with total lack of distance (no impurities)
  • for force acting at a right angle (in the magnet axis)
  • at conditions approx. 20°C

Impact of factors on magnetic holding capacity in practice

During everyday use, the real power is determined by a number of factors, listed from most significant:
  • Distance (between the magnet and the plate), since even a very small clearance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to varnish, rust or debris).
  • Loading method – catalog parameter refers to pulling vertically. When slipping, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Plate thickness – too thin plate does not close the flux, causing part of the power to be wasted to the other side.
  • Steel type – mild steel gives the best results. Alloy admixtures decrease magnetic permeability and holding force.
  • Surface condition – ground elements guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
  • Temperature influence – high temperature weakens pulling force. Too high temperature can permanently damage the magnet.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate decreases the holding force.

Safety rules for work with neodymium magnets
Life threat

Individuals with a heart stimulator should keep an safe separation from magnets. The magnetic field can disrupt the functioning of the life-saving device.

Do not overheat magnets

Keep cool. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, inquire about HT versions (H, SH, UH).

Physical harm

Risk of injury: The attraction force is so immense that it can cause blood blisters, pinching, and even bone fractures. Protective gloves are recommended.

Allergic reactions

Some people experience a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Prolonged contact can result in skin redness. We strongly advise use protective gloves.

Keep away from children

Absolutely keep magnets away from children. Choking hazard is high, and the effects of magnets connecting inside the body are very dangerous.

Dust explosion hazard

Dust created during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Risk of cracking

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

Magnetic media

Do not bring magnets close to a purse, laptop, or TV. The magnetism can permanently damage these devices and erase data from cards.

Phone sensors

Navigation devices and smartphones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Handling guide

Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.

Caution! Want to know more? Read our article: Why are neodymium magnets dangerous?