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BM 700x180x75 [8xM10] - magnetic beam
magnetic beam
Catalog no 090472
GTIN/EAN: 5906301812616
length
700 mm [±1 mm]
Width
180 mm [±1 mm]
Height
75 mm [±1 mm]
Weight
35000 g
6150.00 ZŁ with VAT / pcs + price for transport
5000.00 ZŁ net + 23% VAT / pcs
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BM 700x180x75 [8xM10] - magnetic beam
Specification / characteristics BM 700x180x75 [8xM10] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090472 |
| GTIN/EAN | 5906301812616 |
| Production/Distribution | Dhit sp. z o.o. |
| 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
| 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 |
Elemental analysis
| 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 and weaknesses of Nd2Fe14B magnets.
Pros
- Their power is durable, and after approximately 10 years it decreases only by ~1% (according to research),
- They retain their magnetic properties even under strong external field,
- By using a lustrous layer of silver, the element presents an modern look,
- They are known for high magnetic induction at the operating surface, which improves attraction properties,
- 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 freedom in shaping and the ability to adapt to client solutions,
- Wide application in advanced technology sectors – they are used in HDD drives, motor assemblies, precision medical tools, as well as industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which makes them useful in miniature devices
Limitations
- They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
- 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 and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 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 prevent oxidation as well as corrosion.
- Due to limitations in producing nuts and complex forms in magnets, we recommend using casing - magnetic mount.
- Potential hazard to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these products are able to complicate diagnosis medical when they are in the body.
- With mass production the cost of neodymium magnets is economically unviable,
Pull force analysis
Maximum lifting force for a neodymium magnet – what affects it?
- with the use of a sheet made of special test steel, ensuring maximum field concentration
- with a cross-section minimum 10 mm
- characterized by lack of roughness
- under conditions of ideal adhesion (metal-to-metal)
- under axial force vector (90-degree angle)
- in stable room temperature
Determinants of lifting force in real conditions
- Space between surfaces – every millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Steel grade – ideal substrate is high-permeability steel. Cast iron may have worse magnetic properties.
- Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate decreases the holding force.
GPS and phone interference
A powerful magnetic field disrupts the operation of compasses in phones and GPS navigation. Keep magnets near a smartphone to avoid breaking the sensors.
Fire risk
Mechanical processing of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.
No play value
Absolutely keep magnets out of reach of children. Choking hazard is significant, and the consequences of magnets clamping inside the body are fatal.
Keep away from computers
Powerful magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.
Life threat
Medical warning: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.
Respect the power
Before use, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.
Material brittleness
NdFeB magnets are ceramic materials, which means they are very brittle. Impact of two magnets will cause them shattering into shards.
Sensitization to coating
A percentage of the population have a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Extended handling might lead to dermatitis. We recommend use safety gloves.
Crushing risk
Risk of injury: The pulling power is so immense that it can cause hematomas, crushing, and even bone fractures. Use thick gloves.
Heat sensitivity
Regular neodymium magnets (N-type) lose power when the temperature goes above 80°C. The loss of strength is permanent.
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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