![Magnetic beam (separator) BM 380x180x70 [4x M8]](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Magnetic beam (separator) BM 380x180x70 [4x M8]")
![BM 380x180x70 [4x M8] - magnetic beam](https://cdn3.dhit.pl/graphics/products/bm-380x180x70-4x-m8-wex.jpg)
BM 380x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090218
GTIN/EAN: 5906301812531
length
380 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
24400 g
4185.08 ZŁ with VAT / pcs + price for transport
3402.50 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us now
+48 22 499 98 98
or contact us via
contact form
the contact section.
Parameters as well as appearance of a neodymium magnet can be reviewed on our
modular calculator.
Orders submitted before 14:00 will be dispatched today!
Technical parameters - BM 380x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 380x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090218 |
| GTIN/EAN | 5906301812531 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 380 mm [±1 mm] |
| Width | 180 mm [±1 mm] |
| Height | 70 mm [±1 mm] |
| Weight | 24400 g |
| Manufacturing Tolerance | ±1 mm |
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 |
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 |
See also deals
Pros and cons of Nd2Fe14B magnets.
Pros
- They have constant strength, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
- They show high resistance to demagnetization induced by external magnetic fields,
- By using a smooth coating of silver, the element gains an modern look,
- The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
- 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 exact shaping and adapting to individual needs,
- Wide application in innovative solutions – they find application in HDD drives, electromotive mechanisms, medical equipment, also other advanced devices.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a steel housing, which not only secures them against impacts but also increases their durability
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
- Limited possibility of producing threads in the magnet and complex forms - recommended is cover - mounting mechanism.
- Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. Additionally, small elements of these products can complicate diagnosis medical in case of swallowing.
- With large orders the cost of neodymium magnets is a challenge,
Pull force analysis
Best holding force of the magnet in ideal parameters – what it depends on?
- on a plate made of structural steel, effectively closing the magnetic flux
- whose transverse dimension reaches at least 10 mm
- characterized by even structure
- with total lack of distance (without coatings)
- under vertical force vector (90-degree angle)
- at conditions approx. 20°C
Impact of factors on magnetic holding capacity in practice
- Space between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Load vector – maximum parameter is available only during perpendicular pulling. The resistance to sliding of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
- Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
- Material type – ideal substrate is high-permeability steel. Cast iron may generate lower lifting capacity.
- Plate texture – ground elements ensure maximum contact, which improves force. Rough surfaces reduce efficiency.
- Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.
Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a small distance between the magnet and the plate lowers the holding force.
H&S for magnets
Do not drill into magnets
Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.
Caution required
Handle with care. Rare earth magnets act from a distance and connect with massive power, often quicker than you can react.
Finger safety
Mind your fingers. Two large magnets will join instantly with a force of massive weight, crushing anything in their path. Be careful!
Metal Allergy
Studies show that the nickel plating (standard magnet coating) is a strong allergen. For allergy sufferers, refrain from direct skin contact and choose versions in plastic housing.
Warning for heart patients
People with a ICD have to keep an safe separation from magnets. The magnetic field can interfere with the operation of the life-saving device.
Cards and drives
Very strong magnetic fields can destroy records on credit cards, HDDs, and storage devices. Keep a distance of min. 10 cm.
Do not overheat magnets
Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.
Risk of cracking
Watch out for shards. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
Magnetic interference
An intense magnetic field interferes with the operation of magnetometers in phones and GPS navigation. Keep magnets close to a device to prevent damaging the sensors.
Do not give to children
Always store magnets away from children. Ingestion danger is significant, and the effects of magnets connecting inside the body are tragic.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
InPost Paczkomaty 24/7
Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
Rate the product
Your rating