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neodymium magnets

We offer blue color magnets Nd2Fe14B - our proposal. All magnesy neodymowe on our website are available for immediate delivery (check the list). Check out the magnet pricing for more details see the magnet price list

Magnets for treasure hunters F400 GOLD

Where to buy strong neodymium magnet? Magnet holders in solid and airtight steel enclosure are excellent for use in difficult, demanding weather conditions, including during snow and rain read

magnets with holders

Holders with magnets can be applied to facilitate production, underwater exploration, or locating meteorites made of ore see...

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Dhit sp. z o.o.
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BM 320x180x70 [4x M8] - magnetic beam

magnetic beam

Catalog no 090217

GTIN: 5906301812524

5

length

320 mm [±1 mm]

Width

180 mm [±1 mm]

Height

70 mm [±1 mm]

Weight

20550 g

3635.14 with VAT / pcs + price for transport

2955.40 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
2955.40 ZŁ
3635.14 ZŁ
price from 5 pcs
2778.08 ZŁ
3417.03 ZŁ

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BM 320x180x70 [4x M8] - magnetic beam
Specification/characteristics BM 320x180x70 [4x M8] - magnetic beam
properties
values
Cat. no.
090217
GTIN
5906301812524
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
length
320 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
20550 g
Manufacturing Tolerance
±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

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 separators have an extremely strong surface field, but shallower (shorter range). The choice depends on the size of contaminants and the thickness of the raw material layer on the belt.
The separator housing is high-quality stainless steel, welded by TIG method. This ensures full resistance to corrosion, water, and difficult weather conditions. Suitable for chemical, food, and pharmaceutical industries.
Cleaning a plate separator (static) is done manually. Scrap is removed by mechanically moving it to the edge, where the magnetic field is weaker. Optionally, we offer systems facilitating cleaning (Extra Clean), which speed up maintenance.
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 as well as cons of NdFeB magnets.

Apart from their superior magnetic energy, neodymium magnets have these key benefits:

  • They do not lose strength, even after approximately 10 years – the reduction in power is only ~1% (based on measurements),
  • They are resistant to demagnetization induced by external magnetic fields,
  • By covering with a lustrous layer of nickel, the element gains an aesthetic look,
  • They are known for high magnetic induction at the operating surface, making them more effective,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Possibility of custom forming and modifying to individual requirements,
  • Key role in future technologies – they are commonly used in computer drives, electric motors, diagnostic systems, also complex engineering applications.
  • Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which allows their use in miniature devices

Disadvantages of neodymium magnets:

  • At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • Limited ability of producing threads in the magnet and complicated forms - recommended is cover - mounting mechanism.
  • Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these devices can disrupt the diagnostic process medical in case of swallowing.
  • Due to neodymium price, their price is relatively high,

Magnetic strength at its maximum – what contributes to it?

Holding force of 0 kg is a theoretical maximum value performed under specific, ideal conditions:

  • using a sheet made of low-carbon steel, acting as a circuit closing element
  • with a cross-section of at least 10 mm
  • with an ideally smooth contact surface
  • with total lack of distance (no paint)
  • for force acting at a right angle (pull-off, not shear)
  • in neutral thermal conditions

Lifting capacity in real conditions – factors

Effective lifting capacity is affected by working environment parameters, including (from priority):

  • Clearance – the presence of foreign body (paint, dirt, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
  • Load vector – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
  • Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
  • Plate material – low-carbon steel gives the best results. Alloy steels reduce magnetic properties and holding force.
  • Surface structure – the more even the plate, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
  • Thermal factor – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

* Lifting capacity was assessed with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance {between} the magnet and the plate decreases the holding force.

Precautions when working with NdFeB magnets

Keep away from computers

Do not bring magnets close to a wallet, computer, or TV. The magnetic field can destroy these devices and wipe information from cards.

Fire risk

Drilling and cutting of neodymium magnets carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.

Warning for allergy sufferers

Nickel alert: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, cease handling magnets and wear gloves.

Conscious usage

Handle magnets consciously. Their immense force can surprise even professionals. Plan your moves and do not underestimate their force.

Operating temperature

Regular neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. This process is irreversible.

GPS Danger

A strong magnetic field negatively affects the operation of compasses in phones and navigation systems. Keep magnets near a smartphone to prevent damaging the sensors.

Product not for children

NdFeB magnets are not toys. Eating multiple magnets can lead to them attracting across intestines, which poses a severe health hazard and requires immediate surgery.

Crushing risk

Large magnets can smash fingers in a fraction of a second. Never put your hand between two strong magnets.

Material brittleness

Despite the nickel coating, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Pacemakers

Individuals with a heart stimulator must maintain an safe separation from magnets. The magnetism can stop the functioning of the life-saving device.

Safety First!

Looking for details? Check our post: Are neodymium magnets dangerous?

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98