e-mail: bok@dhit.pl

neodymium magnets

We provide red color magnets Nd2Fe14B - our proposal. Practically all "neodymium magnets" in our store are available for immediate delivery (check the list). See the magnet price list for more details check the magnet price list

Magnet for water searching F300 GOLD

Where to purchase powerful neodymium magnet? Magnet holders in solid and airtight enclosure are perfect for use in difficult, demanding weather, including in the rain and snow read

magnetic holders

Magnetic holders can be used to improve production processes, exploring underwater areas, or locating meteorites made of ore see...

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AM ucho [M8] - magnetic accessories

magnetic accessories

Catalog no 080268

GTIN: 5906301812470

5.00

Weight

53 g

Load capacity

240.00 kg / 2353.60 N

4.92 with VAT / pcs + price for transport

4.00 ZŁ net + 23% VAT / pcs

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Specifications as well as form of a neodymium magnet can be checked with our magnetic mass calculator.

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AM ucho [M8] - magnetic accessories

Specification / characteristics AM ucho [M8] - magnetic accessories

properties
properties values
Cat. no. 080268
GTIN 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

Magnetic properties of material

Specification / characteristics AM ucho [M8] - magnetic accessories
properties values units

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 106 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²

Other proposals

You will find essential equipment here for building professional mounting systems. We offer, among others: various types of hooks, eyelet holders, mounting plates for magnets, and rubber covers. Thanks to these additions, you can adapt any magnetic holder to your individual needs.
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). This enables creating magnetic closures anywhere in the home and office.
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.
Covers made of thin rubber protect delicate surfaces from scratching by a metal magnet. They are ideal when you want to attach a magnet to car paint, a fridge, or furniture. Surface safety comes at the cost of a small loss of nominal power.
We fulfill orders for any quantities, from one piece to thousands of items. Contact us to get a wholesale offer for hooks and holders. Most goods are available off-the-shelf in our warehouse, guaranteeing fast delivery.

Advantages and disadvantages of neodymium magnets.

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

  • Their strength is maintained, and after around ten years it drops only by ~1% (theoretically),
  • Magnets very well resist against loss of magnetization caused by foreign field sources,
  • In other words, due to the smooth finish of gold, the element is aesthetically pleasing,
  • Neodymium magnets create maximum magnetic induction on a small area, which ensures high operational effectiveness,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
  • Thanks to flexibility in constructing and the ability to customize to individual projects,
  • Universal use in modern technologies – they serve a role in data components, electric drive systems, advanced medical instruments, as well as industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which makes them useful in miniature devices

Cons of neodymium magnets and ways of using them

  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets lose their power 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 start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
  • Due to limitations in realizing nuts and complicated forms in magnets, we recommend using casing - magnetic holder.
  • Potential hazard resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small elements of these devices are able to disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Maximum magnetic pulling forcewhat contributes to it?

Breakaway force was defined for the most favorable conditions, taking into account:

  • with the contact of a sheet made of special test steel, guaranteeing full magnetic saturation
  • with a thickness minimum 10 mm
  • with an ideally smooth touching surface
  • without any air gap between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • at conditions approx. 20°C

Determinants of practical lifting force of a magnet

Bear in mind that the working load will differ influenced by the following factors, in order of importance:

  • Gap (between the magnet and the metal), since even a very small distance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force 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 limits the lifting capacity (the magnet "punches through" it).
  • Material composition – not every steel reacts the same. High carbon content weaken the attraction effect.
  • Surface structure – the smoother and more polished the surface, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
  • Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

* Lifting capacity was determined using a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under shearing force the holding force is lower. Moreover, even a slight gap {between} the magnet and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets

Serious injuries

Risk of injury: The attraction force is so great that it can result in blood blisters, pinching, and broken bones. Use thick gloves.

Danger to pacemakers

Individuals with a pacemaker should maintain an large gap from magnets. The magnetism can interfere with the operation of the life-saving device.

Choking Hazard

Adult use only. Tiny parts pose a choking risk, causing severe trauma. Keep away from kids and pets.

Flammability

Fire warning: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.

Threat to navigation

GPS units and smartphones are extremely susceptible to magnetism. Direct contact with a strong magnet can decalibrate the sensors in your phone.

Shattering risk

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Do not underestimate power

Handle magnets consciously. Their powerful strength can shock even professionals. Stay alert and respect their force.

Heat sensitivity

Keep cool. NdFeB magnets are susceptible to heat. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).

Allergic reactions

Studies show that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, prevent direct skin contact and select versions in plastic housing.

Magnetic media

Very strong magnetic fields can erase data on payment cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.

Warning!

Want to know more? Read our article: Are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98