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neodymium magnets

We provide red color magnets Nd2Fe14B - our proposal. All "magnets" on our website are available for immediate delivery (see the list). See the magnet price list for more details see the magnet price list

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Where to purchase powerful neodymium magnet? Magnetic holders in airtight and durable steel casing are perfect for use in difficult, demanding weather, including in the rain and snow more information

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Magnetic holders can be applied to enhance production, underwater discoveries, or searching for meteors from gold more information...

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BM 450x180x70 [4x M8] - magnetic beam

magnetic beam

Catalog no 090219

GTIN: 5906301812548

5

length [±0,1 mm]

450 mm

Width [±0,1 mm]

180 mm

Height [±0,1 mm]

70 mm

Weight

28900 g

4734.89 with VAT / pcs + price for transport

3849.50 ZŁ net + 23% VAT / pcs

bulk discounts:

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Lifting power along with shape of magnets can be estimated on our force calculator.

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BM 450x180x70 [4x M8] - magnetic beam
Specification/characteristics BM 450x180x70 [4x M8] - magnetic beam
properties
values
Cat. no.
090219
GTIN
5906301812548
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
length
450 mm [±0,1 mm]
Width
180 mm [±0,1 mm]
Height
70 mm [±0,1 mm]
Weight
28900 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 separators are characterized by a deep, penetrating magnetic field. 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 decision should be made based on the type of separated material and cleanliness requirements.
The separator housing is high-quality stainless steel, welded by TIG method. 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. Just drop attracted elements (screws, wires) outside the conveyor belt area. To facilitate, a cleaning overlay (dump drawer) can be used, which we offer as an option.
Yes, we are a manufacturer and make plate separators to any size. Dimensions and mounting system are agreed with the client at the design stage. Contact us to receive a free quote and technical drawing.

Advantages as well as disadvantages of neodymium magnets.

Apart from their superior holding force, neodymium magnets have these key benefits:

  • They retain full power for around 10 years – the drop is just ~1% (based on simulations),
  • Neodymium magnets prove to be extremely resistant to loss of magnetic properties caused by magnetic disturbances,
  • A magnet with a shiny nickel surface is more attractive,
  • Magnets are characterized by extremely high magnetic induction on the outer layer,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
  • Due to the potential of precise molding and adaptation to unique projects, neodymium magnets can be created in a variety of forms and dimensions, which amplifies use scope,
  • Huge importance in modern industrial fields – they are used in HDD drives, electric motors, medical equipment, and modern systems.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons of neodymium magnets: tips and applications.

  • To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
  • Neodymium magnets decrease their strength 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
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • Due to limitations in realizing threads and complex shapes in magnets, we propose using a housing - magnetic mount.
  • Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these magnets are able to disrupt the diagnostic process medical after entering the body.
  • Due to expensive raw materials, their price is relatively high,

Highest magnetic holding forcewhat it depends on?

Magnet power was defined for optimal configuration, including:

  • using a plate made of high-permeability steel, functioning as a circuit closing element
  • whose transverse dimension equals approx. 10 mm
  • characterized by even structure
  • without the slightest insulating layer between the magnet and steel
  • for force applied at a right angle (pull-off, not shear)
  • in neutral thermal conditions

Magnet lifting force in use – key factors

During everyday use, the actual lifting capacity is determined by many variables, ranked from the most important:

  • Clearance – the presence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
  • Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
  • Chemical composition of the base – mild steel gives the best results. Alloy steels reduce magnetic properties and holding force.
  • Surface finish – full contact is possible only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal factor – high temperature weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.

* Lifting capacity was measured using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a small distance {between} the magnet’s surface and the plate decreases the holding force.

H&S for magnets

Hand protection

Protect your hands. Two large magnets will snap together instantly with a force of massive weight, crushing anything in their path. Be careful!

Protective goggles

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

Caution required

Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.

Permanent damage

Control the heat. Heating the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.

Fire risk

Machining of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

GPS Danger

Be aware: neodymium magnets generate a field that confuses sensitive sensors. Maintain a safe distance from your phone, tablet, and navigation systems.

Sensitization to coating

Studies show that the nickel plating (standard magnet coating) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands or opt for coated magnets.

Medical implants

Warning for patients: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or request help to work with the magnets.

Do not give to children

Only for adults. Small elements can be swallowed, leading to serious injuries. Keep away from children and animals.

Magnetic media

Avoid bringing magnets close to a wallet, computer, or screen. The magnetic field can destroy these devices and erase data from cards.

Caution!

Want to know more? Check our post: Are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98