e-mail: bok@dhit.pl

neodymium magnets

We offer blue color magnetic Nd2Fe14B - our offer. All magnesy neodymowe in our store are available for immediate delivery (see the list). See the magnet pricing for more details see the magnet price list

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BM 750x180x70 [4x M8] - magnetic beam

magnetic beam

Catalog no 090223

GTIN: 5906301812586

5

length [±0,1 mm]

750 mm

Width [±0,1 mm]

180 mm

Height [±0,1 mm]

70 mm

Weight

48150 g

6914.94 with VAT / pcs + price for transport

5621.90 ZŁ net + 23% VAT / pcs

bulk discounts:

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BM 750x180x70 [4x M8] - magnetic beam
Specification/characteristics BM 750x180x70 [4x M8] - magnetic beam
properties
values
Cat. no.
090223
GTIN
5906301812586
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
length
750 mm [±0,1 mm]
Width
180 mm [±0,1 mm]
Height
70 mm [±0,1 mm]
Weight
48150 g [±0,1 mm]
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material

properties
values
units

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 106
°C-1
Thermal expansion perpendicular (⊥) to orientation (M)
-(1-3) x 10-6
°C-1
Young's modulus
1.7 x 104
kg/mm²

Shopping tips

A magnetic beam (plate separator) is a powerful industrial magnet in a stainless steel housing. The most common installation place is suspension over the transport belt crosswise or lengthwise. The main goal is to protect crushing machines from destruction and ensure product purity.
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 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 separator housing is high-quality stainless steel, welded by TIG method. 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. Just drop attracted elements (screws, wires) outside the conveyor belt area. Optionally, we offer systems facilitating cleaning (Extra Clean), which speed up maintenance.
Yes, we are a manufacturer and make plate separators to any size. We adjust length, width, and mounting hole arrangement (eyes, threads). Contact us to receive a free quote and technical drawing.

Advantages and disadvantages of neodymium magnets.

Besides their durability, neodymium magnets are valued for these benefits:

  • They have stable power, and over around ten years their performance decreases symbolically – ~1% (in testing),
  • They possess excellent resistance to magnetism drop due to opposing magnetic fields,
  • Thanks to the metallic finish, the layer of Ni-Cu-Ni, gold-plated, or silver-plated gives an visually attractive appearance,
  • Neodymium magnets achieve maximum magnetic induction on a their surface, which allows for strong attraction,
  • 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 modularity in forming and the capacity to customize to client solutions,
  • Versatile presence in modern industrial fields – they find application in HDD drives, electric motors, advanced medical instruments, as well as multitasking production systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages of neodymium magnets:

  • At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Neodymium magnets decrease their power 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 stability 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 prevent oxidation and corrosion.
  • Limited possibility of creating threads in the magnet and complicated shapes - recommended is cover - mounting mechanism.
  • Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, small components of these products can 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 increases costs of application in large quantities

Best holding force of the magnet in ideal parameterswhat affects it?

Holding force of 0 kg is a result of laboratory testing performed under specific, ideal conditions:

  • with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • with a thickness no less than 10 mm
  • characterized by smoothness
  • with direct contact (no paint)
  • for force applied at a right angle (in the magnet axis)
  • in stable room temperature

Impact of factors on magnetic holding capacity in practice

During everyday use, the real power results from many variables, ranked from most significant:

  • Clearance – existence of any layer (paint, dirt, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
  • Material composition – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
  • Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
  • Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.

* Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance {between} the magnet and the plate lowers the load capacity.

H&S for magnets

Magnetic interference

A powerful magnetic field negatively affects the functioning of magnetometers in phones and navigation systems. Keep magnets close to a device to avoid damaging the sensors.

Health Danger

Medical warning: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

Magnetic media

Avoid bringing magnets near a purse, computer, or TV. The magnetism can destroy these devices and erase data from cards.

Shattering risk

Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting shards into the air. We recommend safety glasses.

Maximum temperature

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

Caution required

Use magnets consciously. Their immense force can surprise even professionals. Stay alert and respect their power.

Danger to the youngest

Only for adults. Small elements pose a choking risk, leading to serious injuries. Keep away from kids and pets.

Warning for allergy sufferers

Some people have a sensitization to Ni, which is the standard coating for neodymium magnets. Prolonged contact may cause dermatitis. We strongly advise use safety gloves.

Fire warning

Mechanical processing of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Physical harm

Mind your fingers. Two powerful magnets will snap together immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!

Attention!

Looking for details? Check our post: Why are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98