tel: +48 22 499 98 98

neodymium magnets

We provide yellow color magnetic Nd2Fe14B - our store's offer. All magnesy in our store are in stock for immediate delivery (see 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 strong neodymium magnet? Magnetic holders in solid and airtight steel casing are ideally suited for use in challenging climate conditions, including during rain and snow see

magnetic holders

Holders with magnets can be applied to improve production, underwater exploration, or locating meteorites from gold more...

Order is always shipped on the day of purchase before 2:00 PM on working days.

Dhit sp. z o.o.
Product available Ships tomorrow

BM 380x180x70 [4x M8] - magnetic beam

magnetic beam

Catalog no 090218

GTIN: 5906301812531

5

length [±0,1 mm]

380 mm

Width [±0,1 mm]

180 mm

Height [±0,1 mm]

70 mm

Weight

24400 g

4185.08 with VAT / pcs + price for transport

3402.50 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
3402.50 ZŁ
4185.08 ZŁ
price from 5 pcs
3198.35 ZŁ
3933.97 ZŁ

Want to talk magnets?

Contact us by phone +48 22 499 98 98 alternatively drop us a message through form the contact section.
Weight and structure of a magnet can be calculated with our magnetic calculator.

Order by 14:00 and we’ll ship today!

BM 380x180x70 [4x M8] - magnetic beam
Specification/characteristics BM 380x180x70 [4x M8] - magnetic beam
properties
values
Cat. no.
090218
GTIN
5906301812531
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
length
380 mm [±0,1 mm]
Width
180 mm [±0,1 mm]
Height
70 mm [±0,1 mm]
Weight
24400 g [±0,1 mm]
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

It is a device used to catch unwanted metals from bulk raw materials transported on a belt. It can also be mounted in a gravity channel down which raw material falls. Ensures high quality of the final product in plastic recycling, wood, and the food industry.
Ferrite magnets work effectively at a greater distance (high suspension), but with less surface force. They are ideal for catching large pieces of iron (screws, nails, cans, excavator teeth) from a long distance. Neodymium versions are used for precise cleaning of raw material from small particles (food industry, plastics). The decision should be made based on the type of separated material and cleanliness requirements.
We make our magnetic beams entirely of acid-resistant steel AISI 304 or 316 (on request). This guarantees hygiene and ease of cleaning, which is crucial in the food industry. Suitable for chemical, food, and pharmaceutical industries.
Removing contaminants is simple but requires periodic stopping of the process or access to the magnet. Scrap is removed by mechanically moving it to the edge, where the magnetic field is weaker. To facilitate, a cleaning overlay (dump drawer) can be used, which we offer as an option.
As a manufacturer, we fulfill individual orders for specific conveyor belt widths. We adjust length, width, and mounting hole arrangement (eyes, threads). Send us dimensions of your conveyor belt and type of raw material, and we will select the appropriate solution.

Strengths as well as weaknesses of rare earth magnets.

Apart from their consistent magnetism, neodymium magnets have these key benefits:

  • They retain attractive force for nearly ten years – the loss is just ~1% (according to analyses),
  • They feature excellent resistance to magnetism drop as a result of external magnetic sources,
  • A magnet with a smooth silver surface looks better,
  • Magnets have extremely high magnetic induction on the surface,
  • 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...
  • Considering the potential of free shaping and customization to custom solutions, neodymium magnets can be modeled in a broad palette of geometric configurations, which increases their versatility,
  • Wide application in innovative solutions – they are utilized in hard drives, electric drive systems, medical devices, also complex engineering applications.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Characteristics of disadvantages of neodymium magnets and ways of using them

  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
  • Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in producing threads and complicated shapes in magnets, we propose using cover - magnetic holder.
  • Potential hazard related to microscopic parts of magnets are risky, if swallowed, which gains importance in the context of child safety. Additionally, small components of these magnets are able to complicate diagnosis medical after entering the body.
  • High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Breakaway strength of the magnet in ideal conditionswhat affects it?

Breakaway force is the result of a measurement for optimal configuration, assuming:

  • on a plate made of structural steel, optimally conducting the magnetic flux
  • whose transverse dimension reaches at least 10 mm
  • with a plane free of scratches
  • without any air gap between the magnet and steel
  • for force applied at a right angle (in the magnet axis)
  • at conditions approx. 20°C

Impact of factors on magnetic holding capacity in practice

Holding efficiency is influenced by specific conditions, mainly (from most important):

  • Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
  • Force direction – remember that the magnet holds strongest 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 adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Plate material – low-carbon steel gives the best results. Alloy steels decrease magnetic properties and lifting capacity.
  • Base smoothness – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal conditions – 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 was assessed by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. Additionally, even a slight gap {between} the magnet and the plate decreases the holding force.

Warnings

ICD Warning

Patients with a heart stimulator should keep an absolute distance from magnets. The magnetic field can stop the operation of the implant.

Do not give to children

Strictly store magnets out of reach of children. Choking hazard is high, and the consequences of magnets connecting inside the body are very dangerous.

Immense force

Exercise caution. Neodymium magnets attract from a long distance and connect with massive power, often quicker than you can move away.

Hand protection

Risk of injury: The attraction force is so great that it can result in hematomas, pinching, and even bone fractures. Use thick gloves.

Magnetic interference

GPS units and mobile phones are extremely sensitive to magnetism. Close proximity with a strong magnet can decalibrate the internal compass in your phone.

Nickel coating and allergies

Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If redness occurs, immediately stop working with magnets and use protective gear.

Maximum temperature

Standard neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.

Fire warning

Machining of neodymium magnets poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Magnets are brittle

NdFeB magnets are ceramic materials, which means they are very brittle. Impact of two magnets will cause them breaking into small pieces.

Keep away from computers

Very strong magnetic fields can erase data on credit cards, hard drives, and storage devices. Keep a distance of min. 10 cm.

Important!

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

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98