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BM 550x180x70 [4x M8] - magnetic beam

magnetic beam

Catalog no 090221

GTIN/EAN: 5906301812562

5.00

length

550 mm [±1 mm]

Width

180 mm [±1 mm]

Height

70 mm [±1 mm]

Weight

35320 g

5708.18 with VAT / pcs + price for transport

4640.80 ZŁ net + 23% VAT / pcs

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Lifting power along with structure of a neodymium magnet can be analyzed with our online calculation tool.

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Technical specification - BM 550x180x70 [4x M8] - magnetic beam

Specification / characteristics - BM 550x180x70 [4x M8] - magnetic beam

properties
properties values
Cat. no. 090221
GTIN/EAN 5906301812562
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 550 mm [±1 mm]
Width 180 mm [±1 mm]
Height 70 mm [±1 mm]
Weight 35320 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
Technical and environmental data
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%
Environmental data
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: 090221-2026
Magnet Unit Converter
Pulling force

Field Strength

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This separator is tasked with cleaning the product (coal, aggregate, recycling) from steel contaminants. The most common installation place is suspension over the transport belt crosswise or lengthwise. Ensures high quality of the final product in plastic recycling, wood, and the food industry.
Ferrite is cheaper and has deeper field penetration, which is good with a thick layer of raw material. 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 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. This ensures full resistance to corrosion, water, and difficult weather conditions. Suitable for chemical, food, and pharmaceutical industries.
It is a device operated manually by an operator. 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.
As a manufacturer, we fulfill individual orders for specific conveyor belt widths. Dimensions and mounting system are agreed with the client at the design stage. Contact us to receive a free quote and technical drawing.

Pros and cons of Nd2Fe14B magnets.

Strengths

Apart from their superior magnetism, neodymium magnets have these key benefits:
  • They do not lose power, even after approximately ten years – the drop in power is only ~1% (theoretically),
  • They do not lose their magnetic properties even under strong external field,
  • Thanks to the shimmering finish, the plating of Ni-Cu-Ni, gold, or silver-plated gives an elegant appearance,
  • They show high magnetic induction at the operating surface, which increases their power,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
  • Due to the potential of precise forming and customization to custom projects, NdFeB magnets can be manufactured in a broad palette of shapes and sizes, which increases their versatility,
  • Versatile presence in modern technologies – they find application in computer drives, electromotive mechanisms, diagnostic systems, as well as industrial machines.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of neodymium magnets:
  • They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in creating nuts and complex shapes in magnets, we recommend using cover - magnetic holder.
  • Health risk to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these magnets can complicate diagnosis medical when they are in the body.
  • Due to neodymium price, their price is relatively high,

Holding force characteristics

Best holding force of the magnet in ideal parameterswhat contributes to it?

Holding force of 0.00 kg is a measurement result executed under standard conditions:
  • using a sheet made of low-carbon steel, serving as a magnetic yoke
  • with a cross-section no less than 10 mm
  • with a plane cleaned and smooth
  • with zero gap (no impurities)
  • for force applied at a right angle (pull-off, not shear)
  • at ambient temperature room level

Lifting capacity in practice – influencing factors

Please note that the application force will differ depending on elements below, in order of importance:
  • Distance – the presence of foreign body (rust, tape, gap) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
  • Plate thickness – too thin plate causes magnetic saturation, causing part of the power to be lost to the other side.
  • Steel type – low-carbon steel attracts best. Higher carbon content decrease magnetic properties and holding force.
  • Smoothness – ideal contact is obtained only on polished steel. Rough texture reduce the real contact area, reducing force.
  • Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was determined by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate reduces the holding force.

Safety rules for work with NdFeB magnets
Handling rules

Use magnets with awareness. Their immense force can surprise even experienced users. Stay alert and do not underestimate their power.

Protective goggles

Beware of splinters. Magnets can explode upon uncontrolled impact, launching shards into the air. Wear goggles.

Metal Allergy

Studies show that the nickel plating (standard magnet coating) is a common allergen. For allergy sufferers, prevent direct skin contact or opt for encased magnets.

Flammability

Dust created during machining of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.

Medical implants

For implant holders: Strong magnetic fields disrupt electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Thermal limits

Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will permanently weaken its properties and strength.

Product not for children

Neodymium magnets are not suitable for play. Eating multiple magnets can lead to them attracting across intestines, which poses a direct threat to life and necessitates immediate surgery.

Keep away from computers

Avoid bringing magnets close to a wallet, computer, or TV. The magnetism can permanently damage these devices and erase data from cards.

Pinching danger

Pinching hazard: The pulling power is so immense that it can cause hematomas, crushing, and even bone fractures. Use thick gloves.

Phone sensors

Be aware: rare earth magnets generate a field that confuses sensitive sensors. Maintain a safe distance from your mobile, tablet, and GPS.

Important! Need more info? Read our article: Are neodymium magnets dangerous?