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BM 850x180x70 [4x M8] - magnetic beam

magnetic beam

Catalog no 090224

GTIN/EAN: 5906301812593

5.00

length

850 mm [±1 mm]

Width

180 mm [±1 mm]

Height

70 mm [±1 mm]

Weight

54590 g

7729.93 with VAT / pcs + price for transport

6284.50 ZŁ net + 23% VAT / pcs

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Physical properties - BM 850x180x70 [4x M8] - magnetic beam

Specification / characteristics - BM 850x180x70 [4x M8] - magnetic beam

properties
properties values
Cat. no. 090224
GTIN/EAN 5906301812593
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
length 850 mm [±1 mm]
Width 180 mm [±1 mm]
Height 70 mm [±1 mm]
Weight 54590 g
Manufacturing Tolerance ±1 mm

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 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²
Engineering data and GPSR
Elemental analysis
iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%
Ecology and recycling (GPSR)
recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 090224-2025
Measurement Calculator
Pulling force

Magnetic Field

Other proposals

This separator is tasked with cleaning the product (coal, aggregate, recycling) from steel contaminants. It is usually mounted above the conveyor belt (so-called overbelt) or in chutes. Protects mills, crushers, and shredders from falling screws, excavator teeth, or hammers.
Ferrite is cheaper and has deeper field penetration, which is good with a thick layer of raw material. They work well in initial separation in recycling and mining. 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.
The construction is tightly welded from acid-resistant sheet, which guarantees tightness. Thanks to this, the device is waterproof, dustproof, and very durable. Suitable for chemical, food, and pharmaceutical industries.
Cleaning a plate separator (static) is done manually. 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.
We can produce a magnetic block perfectly matched to your installation and requirements. Dimensions and mounting system are agreed with the client at the design stage. Send us dimensions of your conveyor belt and type of raw material, and we will select the appropriate solution.

Pros and cons of Nd2Fe14B magnets.

Pros

Besides their remarkable strength, neodymium magnets offer the following advantages:
  • They do not lose magnetism, even during nearly ten years – the drop in power is only ~1% (according to tests),
  • They are extremely resistant to demagnetization induced by external magnetic fields,
  • In other words, due to the aesthetic finish of silver, the element is aesthetically pleasing,
  • The surface of neodymium magnets generates a maximum magnetic field – this is one of their assets,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Thanks to the potential of precise molding and customization to unique solutions, magnetic components can be produced in a wide range of geometric configurations, which expands the range of possible applications,
  • Universal use in modern industrial fields – they serve a role in hard drives, electric motors, diagnostic systems, and technologically advanced constructions.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Disadvantages of neodymium magnets:
  • They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
  • Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in creating threads and complex shapes in magnets, we recommend using a housing - magnetic holder.
  • Possible danger related to microscopic parts of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. Additionally, tiny parts of these devices can complicate diagnosis medical after entering the body.
  • With mass production the cost of neodymium magnets is economically unviable,

Lifting parameters

Maximum lifting capacity of the magnetwhat contributes to it?

The lifting capacity listed is a result of laboratory testing executed under standard conditions:
  • using a plate made of high-permeability steel, acting as a magnetic yoke
  • whose transverse dimension equals approx. 10 mm
  • with an polished touching surface
  • under conditions of no distance (surface-to-surface)
  • for force acting at a right angle (in the magnet axis)
  • at room temperature

Determinants of lifting force in real conditions

In real-world applications, the actual holding force depends on several key aspects, listed from the most important:
  • Gap between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Load vector – maximum parameter is obtained only during perpendicular pulling. The force required to slide of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
  • Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of generating force.
  • Steel grade – the best choice is high-permeability steel. Stainless steels may generate lower lifting capacity.
  • Surface finish – ideal contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
  • Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).

Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.

H&S for magnets
Life threat

For implant holders: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or request help to work with the magnets.

Compass and GPS

GPS units and smartphones are highly sensitive to magnetism. Direct contact with a strong magnet can ruin the sensors in your phone.

Electronic hazard

Very strong magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Keep a distance of at least 10 cm.

Magnets are brittle

Beware of splinters. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.

Conscious usage

Handle with care. Neodymium magnets act from a long distance and connect with huge force, often quicker than you can move away.

Heat warning

Avoid heat. Neodymium magnets are susceptible to heat. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).

Machining danger

Fire warning: Rare earth powder is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

Physical harm

Large magnets can smash fingers instantly. Never put your hand betwixt two attracting surfaces.

Do not give to children

Always keep magnets away from children. Risk of swallowing is high, and the effects of magnets connecting inside the body are tragic.

Avoid contact if allergic

Nickel alert: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, immediately stop working with magnets and use protective gear.

Attention! More info about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98