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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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Specifications along with structure of a neodymium magnet can be analyzed using our online calculation tool.

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Detailed 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
Chemical composition
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%
Sustainability
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
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Pulling force

Magnetic Field

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A magnetic beam (plate separator) is a powerful industrial magnet in a stainless steel housing. 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 work well in initial separation in recycling and mining. Neodymium separators have an extremely strong surface field, but shallower (shorter range). The decision should be made based on the type of separated material and cleanliness requirements.
The construction is tightly welded from acid-resistant sheet, which guarantees tightness. This ensures full resistance to corrosion, water, and difficult weather conditions. It can be safely used in contact with loose food (flour, sugar, grain).
Cleaning a plate separator (static) is done manually. Periodically wipe the working surface with a cloth or slide collected metal to the side. 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. Contact us to receive a free quote and technical drawing.

Advantages and disadvantages of rare earth magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:
  • They retain attractive force for nearly 10 years – the drop is just ~1% (based on simulations),
  • Magnets very well protect themselves against loss of magnetization caused by foreign field sources,
  • In other words, due to the reflective layer of silver, the element is aesthetically pleasing,
  • Magnetic induction on the working layer of the magnet remains extremely intense,
  • 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...
  • Thanks to the possibility of precise molding and customization to custom solutions, neodymium magnets can be produced in a wide range of forms and dimensions, which increases their versatility,
  • Versatile presence in future technologies – they are commonly used in magnetic memories, electric motors, advanced medical instruments, and multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in compact constructions

Disadvantages

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and 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 when using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • Due to limitations in creating threads and complicated shapes in magnets, we propose using cover - magnetic holder.
  • Health risk resulting from small fragments of magnets pose a threat, if swallowed, which becomes key in the context of child safety. It is also worth noting that tiny parts of these magnets can disrupt the diagnostic process medical when they are in the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Best holding force of the magnet in ideal parameterswhat it depends on?

Information about lifting capacity was defined for optimal configuration, assuming:
  • with the application of a yoke made of special test steel, ensuring full magnetic saturation
  • with a cross-section no less than 10 mm
  • with a surface perfectly flat
  • without the slightest insulating layer between the magnet and steel
  • under vertical application of breakaway force (90-degree angle)
  • at ambient temperature room level

Practical aspects of lifting capacity – factors

Holding efficiency impacted by specific conditions, mainly (from priority):
  • Distance – existence of any layer (rust, dirt, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Direction of force – maximum parameter is available only during perpendicular pulling. The shear force of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
  • Plate thickness – too thin sheet causes magnetic saturation, causing part of the power to be wasted to the other side.
  • Steel type – mild steel attracts best. Higher carbon content decrease magnetic properties and lifting capacity.
  • Surface condition – smooth surfaces guarantee perfect abutment, which increases field saturation. Rough surfaces reduce efficiency.
  • 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).

Lifting capacity was determined by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the holding force is lower. In addition, even a small distance between the magnet and the plate reduces the lifting capacity.

Warnings
Pinching danger

Big blocks can crush fingers in a fraction of a second. Under no circumstances place your hand betwixt two attracting surfaces.

Conscious usage

Before use, read the rules. Sudden snapping can break the magnet or hurt your hand. Think ahead.

Cards and drives

Intense magnetic fields can destroy records on credit cards, hard drives, and storage devices. Stay away of min. 10 cm.

Machining danger

Mechanical processing of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Thermal limits

Regular neodymium magnets (N-type) lose power when the temperature goes above 80°C. Damage is permanent.

Danger to pacemakers

Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.

Adults only

NdFeB magnets are not suitable for play. Swallowing several magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and necessitates immediate surgery.

Fragile material

Despite the nickel coating, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.

Phone sensors

GPS units and mobile phones are extremely susceptible to magnetism. Direct contact with a strong magnet can permanently damage the sensors in your phone.

Warning for allergy sufferers

Studies show that nickel (the usual finish) is a strong allergen. For allergy sufferers, prevent direct skin contact and choose versions in plastic housing.

Warning! Learn more about hazards in the article: Safety of working with magnets.