e-mail: bok@dhit.pl

neodymium magnets

We offer blue color magnetic Nd2Fe14B - our offer. Practically all magnesy on our website are available for immediate purchase (see the list). Check out the magnet pricing for more details check the magnet price list

Magnets for fishing F300 GOLD

Where to purchase very strong neodymium magnet? Magnet holders in airtight, solid enclosure are excellent for use in difficult, demanding climate conditions, including during rain and snow read

magnets with holders

Holders with magnets can be applied to enhance manufacturing, underwater exploration, or locating meteorites made of ore more...

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Dhit sp. z o.o.
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BM 550x180x70 [4x M8] - magnetic beam

magnetic beam

Catalog no 090221

GTIN: 5906301812562

5

length [±0,1 mm]

550 mm

Width [±0,1 mm]

180 mm

Height [±0,1 mm]

70 mm

Weight

35320 g

5708.18 with VAT / pcs + price for transport

4640.80 ZŁ net + 23% VAT / pcs

bulk discounts:

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price from 1 pcs
4640.80 ZŁ
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price from 5 pcs
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Call us +48 22 499 98 98 if you prefer send us a note through request form our website.
Force and form of a neodymium magnet can be calculated on our modular calculator.

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BM 550x180x70 [4x M8] - magnetic beam
Specification/characteristics BM 550x180x70 [4x M8] - magnetic beam
properties
values
Cat. no.
090221
GTIN
5906301812562
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
length
550 mm [±0,1 mm]
Width
180 mm [±0,1 mm]
Height
70 mm [±0,1 mm]
Weight
35320 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. The main goal is to protect crushing machines from destruction and ensure product purity.
Ferrite magnets work effectively at a greater distance (high suspension), but with less surface force. We recommend them for protecting machines against large, heavy scrap (so-called tramp iron). Neodymium versions are used for precise cleaning of raw material from small particles (food industry, plastics). The choice depends on the size of contaminants and the thickness of the raw material layer on the belt.
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. The product meets standards for the food industry (HACCP/IFS/BRC).
Removing contaminants is simple but requires periodic stopping of the process or access to the magnet. Just drop attracted elements (screws, wires) outside the conveyor belt area. Cleaning frequency depends on the amount of contaminants in the product - the more metal, the more often you need to clean.
We can produce a magnetic block perfectly matched to your installation and requirements. We design separators according to the orderer's requirements, taking into account material specifics. Send us dimensions of your conveyor belt and type of raw material, and we will select the appropriate solution.

Advantages as well as disadvantages of NdFeB magnets.

Besides their tremendous strength, neodymium magnets offer the following advantages:

  • They retain full power for around 10 years – the loss is just ~1% (in theory),
  • Magnets effectively resist against demagnetization caused by external fields,
  • In other words, due to the glossy layer of silver, the element gains visual value,
  • Magnetic induction on the top side of the magnet is impressive,
  • 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...
  • Due to the possibility of precise molding and adaptation to custom requirements, magnetic components can be manufactured in a variety of forms and dimensions, which expands the range of possible applications,
  • Wide application in high-tech industry – they are used in mass storage devices, electric drive systems, diagnostic systems, also multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which allows their use in compact constructions

Characteristics of disadvantages of neodymium magnets: tips and applications.

  • They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
  • We suggest casing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complex shapes.
  • Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that small components of these magnets are able to be problematic in diagnostics medical after entering the body.
  • With budget limitations the cost of neodymium magnets is economically unviable,

Highest magnetic holding forcewhat affects it?

The load parameter shown represents the maximum value, obtained under laboratory conditions, meaning:

  • with the use of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • whose transverse dimension equals approx. 10 mm
  • with a surface free of scratches
  • under conditions of no distance (surface-to-surface)
  • for force applied at a right angle (in the magnet axis)
  • in neutral thermal conditions

Magnet lifting force in use – key factors

In real-world applications, the actual holding force results from several key aspects, listed from the most important:

  • Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Material composition – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
  • Smoothness – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
  • Thermal conditions – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).

* Lifting capacity was measured with the use of a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a slight gap {between} the magnet and the plate reduces the load capacity.

Warnings

Conscious usage

Handle magnets with awareness. Their immense force can surprise even experienced users. Stay alert and respect their power.

Cards and drives

Do not bring magnets close to a wallet, laptop, or TV. The magnetic field can destroy these devices and wipe information from cards.

Eye protection

Protect your eyes. Magnets can explode upon violent connection, launching sharp fragments into the air. Eye protection is mandatory.

This is not a toy

These products are not toys. Accidental ingestion of several magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and necessitates urgent medical intervention.

Crushing risk

Mind your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!

Keep away from electronics

An intense magnetic field interferes with the functioning of magnetometers in smartphones and navigation systems. Do not bring magnets close to a device to prevent damaging the sensors.

Maximum temperature

Keep cool. NdFeB magnets are sensitive to heat. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).

Warning for heart patients

Warning for patients: Powerful magnets affect electronics. Keep minimum 30 cm distance or ask another person to handle the magnets.

Skin irritation risks

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness occurs, cease working with magnets and wear gloves.

Machining danger

Fire warning: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.

Caution!

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

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98