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BM 320x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090217
GTIN/EAN: 5906301812524
length
320 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
20550 g
3635.14 ZŁ with VAT / pcs + price for transport
2955.40 ZŁ net + 23% VAT / pcs
bulk discounts:
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Specifications and structure of a neodymium magnet can be calculated on our
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Technical parameters of the product - BM 320x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 320x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090217 |
| GTIN/EAN | 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 |
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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Pros as well as cons of rare earth magnets.
Advantages
- They retain attractive force for around 10 years – the loss is just ~1% (according to analyses),
- They have excellent resistance to magnetic field loss as a result of external magnetic sources,
- By covering with a shiny layer of nickel, the element gains an proper look,
- They feature high magnetic induction at the operating surface, which increases their power,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
- Thanks to flexibility in shaping and the capacity to customize to client solutions,
- Significant place in innovative solutions – they are used in magnetic memories, motor assemblies, medical devices, also technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which enables their usage in small systems
Cons
- To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
- When exposed to high temperature, neodymium magnets experience a drop in strength. 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
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- We recommend casing - magnetic mechanism, due to difficulties in realizing threads inside the magnet and complex shapes.
- Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these devices can complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Lifting parameters
Magnetic strength at its maximum – what affects it?
- on a block made of mild steel, perfectly concentrating the magnetic field
- possessing a thickness of at least 10 mm to avoid saturation
- with an polished contact surface
- under conditions of no distance (metal-to-metal)
- during pulling in a direction vertical to the plane
- at temperature approx. 20 degrees Celsius
Lifting capacity in real conditions – factors
- Space between surfaces – every millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
- Direction of force – maximum parameter is available only during pulling at a 90° angle. The force required to slide of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
- Plate material – mild steel attracts best. Higher carbon content lower magnetic properties and holding force.
- Surface condition – ground elements ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
- Heat – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures 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, however under parallel forces the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.
H&S for magnets
Maximum temperature
Watch the temperature. Exposing the magnet above 80 degrees Celsius will destroy its properties and strength.
Handling guide
Use magnets with awareness. Their immense force can shock even professionals. Be vigilant and respect their power.
Magnet fragility
Despite the nickel coating, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.
Nickel coating and allergies
Studies show that the nickel plating (the usual finish) is a potent allergen. If your skin reacts to metals, avoid direct skin contact or select coated magnets.
Crushing force
Watch your fingers. Two powerful magnets will snap together immediately with a force of massive weight, crushing everything in their path. Exercise extreme caution!
Combustion hazard
Machining of NdFeB material poses a fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Keep away from computers
Data protection: Strong magnets can damage data carriers and delicate electronics (heart implants, medical aids, mechanical watches).
Product not for children
Neodymium magnets are not suitable for play. Accidental ingestion of several magnets may result in them pinching intestinal walls, which poses a critical condition and requires urgent medical intervention.
Warning for heart patients
Patients with a pacemaker have to maintain an safe separation from magnets. The magnetic field can disrupt the functioning of the implant.
GPS Danger
Be aware: rare earth magnets produce a field that disrupts sensitive sensors. Maintain a safe distance from your phone, device, and GPS.
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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