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BM 700x180x75 [8xM10] - magnetic beam

magnetic beam

Catalog no 090472

GTIN/EAN: 5906301812616

5.00
length
700 mm [±1 mm]
Width
180 mm [±1 mm]
Height
75 mm [±1 mm]
Weight
35000 g

How we measure these parameters — certificates and measurements

see parameters »

5000.00 zł net / pcs

6150.00 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

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Gross
price from 1 pcs
5000.00 zł
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price from 5 pcs
4700.00 zł
5781.00 zł

Frequently asked questions

Which rod should I choose for fine contamination?
For particles below 0.5 mm — a Ø32 mm rod in grade N52, with surface induction of about 10,000 Gs. A Ø25 rod in grade N42 gives about 6,500 Gs and is chosen for contamination above 1 mm: bolts, washers, pieces of wire.
Which rod pitch should I choose?
The narrow pitch, 40 mm centre to centre, for fine free-flowing fractions — it gives denser coverage of the cross-section. The wide pitch, 50 mm, for granulates and for damp, greasy or sticky materials, where a narrow pitch risks the material bridging above the rods.
Why does efficiency drop after a few weeks of operation?
Almost always because the separator has not been cleaned. The layer of captured particles shields the field, and further particles settle on that layer rather than on the rod surface, where the gradient is far stronger. The magnets themselves do not weaken at that rate.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical parameters of the product - BM 700x180x75 [8xM10] - magnetic beam

Specification / characteristics - BM 700x180x75 [8xM10] - magnetic beam

properties
properties values
Cat. no. 090472
GTIN/EAN 5906301812616
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 700 mm [±1 mm]
Width 180 mm [±1 mm]
Height 75 mm [±1 mm]
Weight 35000 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 310 °C
Curie Temperature TF 590 °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 specification and ecology

Material specification

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: 090472-2026
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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. The main goal is to protect crushing machines from destruction and ensure product purity.
Ferrite magnets work effectively at a greater distance (high suspension), but with less surface force. We recommend them for protecting machines against large, heavy scrap (so-called tramp iron). 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 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.
Yes, we are a manufacturer and make plate separators to any size. We design separators according to the orderer's requirements, taking into account material specifics. Contact us to receive a free quote and technical drawing.

Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They do not lose strength, even over approximately ten years – the drop in power is only ~1% (theoretically),
  • They are extremely resistant to demagnetization induced by external magnetic fields,
  • A magnet with a metallic silver surface looks better,
  • The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing feature,
  • Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures approaching 230°C and above...
  • Possibility of individual machining and modifying to concrete conditions,
  • Key role in high-tech industry – they are commonly used in HDD drives, brushless drives, medical equipment, as well as other advanced devices.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Cons

Disadvantages of neodymium magnets:
  • At very strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's 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 durability even at temperatures up to 230°C
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • We recommend cover - magnetic mechanism, due to difficulties in creating threads inside the magnet and complex shapes.
  • Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which gains importance in the context of child safety. Furthermore, small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
  • Due to neodymium price, their price exceeds standard values,

Holding force characteristics

Maximum lifting capacity of the magnet – what affects it?

The lifting capacity listed is a theoretical maximum value executed under specific, ideal conditions:
  • on a plate made of mild steel, optimally conducting the magnetic flux
  • with a thickness minimum 10 mm
  • with an ideally smooth contact surface
  • under conditions of no distance (metal-to-metal)
  • under vertical application of breakaway force (90-degree angle)
  • at ambient temperature approx. 20 degrees Celsius

Impact of factors on magnetic holding capacity in practice

During everyday use, the actual holding force depends on a number of factors, ranked from crucial:
  • Distance (betwixt the magnet and the metal), because even a microscopic distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
  • Load vector – maximum parameter is reached only during pulling at a 90° angle. The shear force of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
  • Steel type – low-carbon steel attracts best. Higher carbon content decrease magnetic properties and holding force.
  • Surface quality – the more even the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
  • Thermal factor – high temperature reduces magnetic field. Too high temperature can permanently demagnetize the magnet.

Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under shearing force the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance between the magnet’s surface and the plate lowers the holding force.

Safe handling of NdFeB magnets
GPS and phone interference

An intense magnetic field disrupts the functioning of compasses in smartphones and navigation systems. Maintain magnets near a device to prevent breaking the sensors.

Keep away from children

Only for adults. Tiny parts can be swallowed, leading to severe trauma. Keep away from kids and pets.

Pacemakers

Patients with a pacemaker should maintain an safe separation from magnets. The magnetism can interfere with the functioning of the life-saving device.

Fire warning

Dust produced during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Threat to electronics

Do not bring magnets near a wallet, laptop, or screen. The magnetism can permanently damage these devices and wipe information from cards.

Powerful field

Handle with care. Rare earth magnets act from a distance and connect with huge force, often faster than you can move away.

Nickel allergy

A percentage of the population suffer from a hypersensitivity to nickel, which is the typical protective layer for neodymium magnets. Prolonged contact might lead to a rash. We strongly advise wear safety gloves.

Serious injuries

Pinching hazard: The pulling power is so immense that it can result in blood blisters, crushing, and even bone fractures. Use thick gloves.

Thermal limits

Standard neodymium magnets (grade N) lose power when the temperature surpasses 80°C. Damage is permanent.

Protective goggles

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

Safety First! More info about hazards in the article: Magnet Safety Guide.