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neodymium magnets

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

Magnet for treasure hunters F300 GOLD

Where to buy powerful magnet? Magnet holders in airtight and durable steel casing are perfect for use in difficult climate conditions, including during snow and rain read

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AM ucho [M8] - magnetic accessories

magnetic accessories

Catalog no 080268

GTIN: 5906301812470

5

Weight

53 g

Load capacity

240 kg / 2353.6 N

4.92 with VAT / pcs + price for transport

4.00 ZŁ net + 23% VAT / pcs

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AM ucho [M8] - magnetic accessories
Specification/characteristics AM ucho [M8] - magnetic accessories
properties
values
Cat. no.
080268
GTIN
5906301812470
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Weight
53 g [±0,1 mm]
Load capacity ~ ?
240 kg / 2353.6 N
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material

properties
values
units

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

Shopping tips

In this category, we offer a wide selection of complementary elements for magnetic holders. We offer, among others: various types of hooks, eyelet holders, 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. 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.
Tips fit sockets with thread M3, M4, M5, M6, M8, M10, M12, etc. 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.
The cap increases friction (coefficient of friction), preventing the magnet from sliding down a vertical wall. Use them wherever direct metal contact could damage the surface. 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 B2B clients, we have special trade conditions and deferred payment terms. We guarantee continuity of supply and high quality of fasteners.

Strengths and weaknesses of NdFeB magnets.

In addition to their long-term stability, neodymium magnets provide the following advantages:

  • They have constant strength, and over more than 10 years their attraction force decreases symbolically – ~1% (according to theory),
  • They are noted for resistance to demagnetization induced by presence of other magnetic fields,
  • By applying a shiny coating of nickel, the element presents an proper look,
  • Magnetic induction on the surface of the magnet remains extremely intense,
  • Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to the ability of accurate molding and adaptation to specialized requirements, NdFeB magnets can be produced in a variety of geometric configurations, which makes them more universal,
  • Versatile presence in high-tech industry – they find application in hard drives, electric motors, advanced medical instruments, as well as complex engineering applications.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Characteristics of disadvantages of neodymium magnets: application proposals

  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in creating threads and complex forms in magnets, we recommend using a housing - magnetic mount.
  • Health risk related to microscopic parts of magnets are risky, if swallowed, which gains importance in the context of child safety. Furthermore, small components of these products can be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Maximum holding power of the magnet – what it depends on?

Information about lifting capacity is the result of a measurement for optimal configuration, assuming:

  • with the application of a yoke made of special test steel, guaranteeing full magnetic saturation
  • with a thickness of at least 10 mm
  • characterized by even structure
  • without the slightest air gap between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • at room temperature

Determinants of practical lifting force of a magnet

In practice, the actual lifting capacity is determined by several key aspects, listed from most significant:

  • Distance (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
  • Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. Alloy additives worsen the attraction effect.
  • Plate texture – smooth surfaces guarantee perfect abutment, which improves force. Uneven metal reduce efficiency.
  • Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

* Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the holding force is lower. Additionally, even a slight gap {between} the magnet’s surface and the plate reduces the holding force.

Safety rules for work with NdFeB magnets

Thermal limits

Avoid heat. Neodymium magnets are sensitive to temperature. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).

Precision electronics

An intense magnetic field disrupts the functioning of magnetometers in smartphones and GPS navigation. Do not bring magnets near a smartphone to prevent breaking the sensors.

Safe distance

Avoid bringing magnets near a purse, computer, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Health Danger

Warning for patients: Powerful magnets affect electronics. Keep at least 30 cm distance or request help to work with the magnets.

Adults only

Neodymium magnets are not suitable for play. Eating multiple magnets may result in them connecting inside the digestive tract, which poses a critical condition and requires urgent medical intervention.

Metal Allergy

Nickel alert: The nickel-copper-nickel coating contains nickel. If skin irritation appears, cease handling magnets and use protective gear.

Pinching danger

Risk of injury: The pulling power is so immense that it can result in blood blisters, pinching, and broken bones. Use thick gloves.

Protective goggles

Protect your eyes. Magnets can fracture upon uncontrolled impact, launching shards into the air. We recommend safety glasses.

Caution required

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

Dust is flammable

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this risks ignition.

Safety First!

Looking for details? Read our article: Why are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98