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BM 550x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090221
GTIN/EAN: 5906301812562
length
550 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
35320 g
5708.18 ZŁ with VAT / pcs + price for transport
4640.80 ZŁ net + 23% VAT / pcs
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Physical properties - BM 550x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 550x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090221 |
| GTIN/EAN | 5906301812562 |
| Production/Distribution | Dhit sp. z o.o. |
| 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
| 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 |
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths as well as weaknesses of neodymium magnets.
Strengths
- They do not lose power, even over nearly 10 years – the reduction in lifting capacity is only ~1% (based on measurements),
- They are resistant to demagnetization induced by external disturbances,
- By covering with a lustrous layer of nickel, the element gains an proper look,
- They feature high magnetic induction at the operating surface, which affects their effectiveness,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Thanks to the option of flexible forming and adaptation to custom solutions, neodymium magnets can be produced in a broad palette of shapes and sizes, which expands the range of possible applications,
- Significant place in high-tech industry – they are utilized in mass storage devices, motor assemblies, advanced medical instruments, and technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in compact constructions
Limitations
- At strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Limited ability of creating nuts in the magnet and complex forms - preferred is cover - magnetic holder.
- Possible danger to health – tiny shards of magnets are risky, if swallowed, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these devices can complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what it depends on?
- on a plate made of mild steel, optimally conducting the magnetic field
- with a cross-section minimum 10 mm
- with a surface perfectly flat
- without any air gap between the magnet and steel
- for force acting at a right angle (pull-off, not shear)
- at room temperature
Practical aspects of lifting capacity – factors
- Gap (betwixt the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Direction of force – highest force is reached only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
- Plate thickness – too thin steel does not accept the full field, causing part of the flux to be wasted to the other side.
- Material type – ideal substrate is high-permeability steel. Cast iron may have worse magnetic properties.
- Surface structure – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
- Temperature influence – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate decreases the holding force.
Safety rules for work with neodymium magnets
Operating temperature
Monitor thermal conditions. Heating the magnet to high heat will permanently weaken its properties and strength.
Safe operation
Use magnets consciously. Their huge power can surprise even experienced users. Plan your moves and respect their power.
Product not for children
Strictly keep magnets away from children. Ingestion danger is high, and the effects of magnets clamping inside the body are fatal.
Impact on smartphones
An intense magnetic field interferes with the functioning of magnetometers in phones and GPS navigation. Maintain magnets near a device to avoid damaging the sensors.
Warning for allergy sufferers
Nickel alert: The nickel-copper-nickel coating consists of nickel. If redness occurs, cease working with magnets and wear gloves.
Keep away from computers
Equipment safety: Strong magnets can damage data carriers and sensitive devices (heart implants, hearing aids, timepieces).
Bodily injuries
Protect your hands. Two large magnets will snap together instantly with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!
Dust explosion hazard
Drilling and cutting of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
ICD Warning
Patients with a ICD have to keep an large gap from magnets. The magnetic field can interfere with the operation of the implant.
Beware of splinters
Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. Wear goggles.
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
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