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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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Force along with form of a magnet can be analyzed using our magnetic mass calculator.

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Physical properties - 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%
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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Force (pull)

Magnetic Field

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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 separators are characterized by a deep, penetrating magnetic field. They work well in initial separation in recycling and mining. Neodymiums are unrivaled in catching fine filings, wires, and small screws. The decision should be made based on the type of separated material and cleanliness requirements.
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).
Cleaning a plate separator (static) is done manually. 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.
We can produce a magnetic block perfectly matched to your installation and requirements. We adjust length, width, and mounting hole arrangement (eyes, threads). Contact us to receive a free quote and technical drawing.

Pros and cons of Nd2Fe14B magnets.

Advantages

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They have unchanged lifting capacity, and over around ten years their performance decreases symbolically – ~1% (in testing),
  • They do not lose their magnetic properties even under strong external field,
  • By covering with a smooth coating of silver, the element has an proper look,
  • Magnetic induction on the surface of the magnet turns out to be impressive,
  • 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...
  • Possibility of custom creating and optimizing to complex requirements,
  • Key role in electronics industry – they are commonly used in mass storage devices, electric drive systems, precision medical tools, also complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which enables their usage in miniature devices

Disadvantages

Drawbacks and weaknesses of neodymium magnets: application proposals
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
  • Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. 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 recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • Due to limitations in creating threads and complicated forms in magnets, we recommend using casing - magnetic holder.
  • Health risk to health – tiny shards of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that small elements of these magnets are able to be problematic in diagnostics medical in case of swallowing.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Highest magnetic holding forcewhat contributes to it?

Magnet power is the result of a measurement for optimal configuration, taking into account:
  • on a plate made of structural steel, optimally conducting the magnetic flux
  • whose transverse dimension reaches at least 10 mm
  • with an ideally smooth touching surface
  • with zero gap (no paint)
  • for force applied at a right angle (in the magnet axis)
  • at temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

Please note that the magnet holding may be lower depending on the following factors, starting with the most relevant:
  • Space between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
  • Base massiveness – too thin sheet does not close the flux, causing part of the power to be escaped into the air.
  • Steel grade – ideal substrate is high-permeability steel. Stainless steels may have worse magnetic properties.
  • Base smoothness – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
  • Temperature – temperature increase results in weakening of force. It is worth remembering the maximum operating temperature for a given model.

Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a small distance between the magnet’s surface and the plate decreases the holding force.

Warnings
Do not drill into magnets

Fire warning: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.

Handling rules

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

Warning for heart patients

Health Alert: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Cards and drives

Intense magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.

Sensitization to coating

Some people have a contact allergy to Ni, which is the common plating for NdFeB magnets. Frequent touching can result in a rash. We suggest use safety gloves.

Magnetic interference

GPS units and smartphones are highly sensitive to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.

Finger safety

Large magnets can break fingers in a fraction of a second. Do not place your hand between two attracting surfaces.

Choking Hazard

Absolutely store magnets out of reach of children. Choking hazard is significant, and the consequences of magnets connecting inside the body are very dangerous.

Power loss in heat

Keep cool. Neodymium magnets are sensitive to temperature. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).

Magnet fragility

Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.

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