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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
bulk discounts:
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Parameters and shape of neodymium magnets can be tested using our
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Technical of the product - 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 |
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Pros and cons of neodymium magnets.
Strengths
- They have unchanged lifting capacity, and over nearly ten years their attraction force decreases symbolically – ~1% (according to theory),
- They retain their magnetic properties even under external field action,
- Thanks to the smooth finish, the layer of Ni-Cu-Ni, gold, or silver-plated gives an aesthetic appearance,
- Neodymium magnets generate maximum magnetic induction on a contact point, which allows for strong attraction,
- Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
- Possibility of individual machining as well as modifying to atypical conditions,
- Huge importance in high-tech industry – they are used in data components, electric drive systems, medical devices, and industrial machines.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Weaknesses
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- 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 and corrosion.
- Limited ability of creating nuts in the magnet and complex forms - preferred is cover - magnetic holder.
- Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which gains importance in the context of child safety. Furthermore, small elements of these devices are able to be problematic in diagnostics medical in case of swallowing.
- With large orders the cost of neodymium magnets is a challenge,
Lifting parameters
Maximum lifting capacity of the magnet – what affects it?
- on a base made of structural steel, optimally conducting the magnetic field
- possessing a thickness of minimum 10 mm to ensure full flux closure
- with an ideally smooth touching surface
- under conditions of no distance (metal-to-metal)
- for force applied at a right angle (pull-off, not shear)
- in neutral thermal conditions
Lifting capacity in real conditions – factors
- Distance (between the magnet and the metal), as even a microscopic distance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to paint, corrosion or dirt).
- Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of maximum force).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Steel type – mild steel gives the best results. Alloy steels decrease magnetic permeability and lifting capacity.
- Surface structure – the more even the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
- Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).
Lifting capacity testing was performed on a smooth plate of suitable thickness, under a perpendicular pulling force, in contrast under parallel forces the load capacity is reduced by as much as 5 times. Additionally, even a slight gap between the magnet and the plate decreases the lifting capacity.
Safety rules for work with NdFeB magnets
Danger to the youngest
Only for adults. Tiny parts pose a choking risk, leading to serious injuries. Store away from kids and pets.
Caution required
Handle with care. Rare earth magnets attract from a long distance and connect with massive power, often faster than you can move away.
Medical interference
Patients with a ICD have to keep an absolute distance from magnets. The magnetic field can disrupt the operation of the life-saving device.
Demagnetization risk
Avoid heat. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).
Skin irritation risks
Certain individuals have a contact allergy to nickel, which is the common plating for neodymium magnets. Prolonged contact can result in dermatitis. We strongly advise wear protective gloves.
Data carriers
Avoid bringing magnets close to a purse, computer, or TV. The magnetism can destroy these devices and wipe information from cards.
Fire risk
Mechanical processing of neodymium magnets poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Bodily injuries
Protect your hands. Two large magnets will snap together immediately with a force of massive weight, crushing everything in their path. Be careful!
Shattering risk
Neodymium magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets leads to them shattering into small pieces.
Compass and GPS
GPS units and mobile phones are extremely susceptible to magnetism. Close proximity with a strong magnet can permanently damage the internal compass in your phone.
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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