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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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Technical - 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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Strengths and weaknesses of neodymium magnets.
Strengths
- They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (according to literature),
- Neodymium magnets remain remarkably resistant to loss of magnetic properties caused by external field sources,
- By applying a decorative layer of nickel, the element acquires an nice look,
- Magnets exhibit huge magnetic induction on the active area,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
- Due to the ability of precise shaping and adaptation to unique projects, neodymium magnets can be produced in a broad palette of geometric configurations, which increases their versatility,
- Key role in high-tech industry – they are used in mass storage devices, motor assemblies, diagnostic systems, as well as modern systems.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Disadvantages
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
- When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their power 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 start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
- We suggest a housing - magnetic holder, due to difficulties in producing threads inside the magnet and complex forms.
- Health risk 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 small components of these devices can be problematic in diagnostics medical in case of swallowing.
- With mass production the cost of neodymium magnets can be a barrier,
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what it depends on?
- using a sheet made of high-permeability steel, serving as a ideal flux conductor
- with a thickness no less than 10 mm
- with an ground touching surface
- with total lack of distance (without paint)
- for force applied at a right angle (in the magnet axis)
- at standard ambient temperature
Determinants of practical lifting force of a magnet
- Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
- Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Steel thickness – too thin plate causes magnetic saturation, causing part of the power to be wasted into the air.
- Steel grade – ideal substrate is pure iron steel. Cast iron may generate lower lifting capacity.
- Smoothness – full contact is obtained only on polished steel. Rough texture reduce the real contact area, reducing force.
- Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the load capacity is reduced by as much as 5 times. Moreover, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.
Warnings
Fire risk
Powder generated during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.
Bone fractures
Large magnets can break fingers in a fraction of a second. Under no circumstances place your hand between two attracting surfaces.
ICD Warning
Individuals with a heart stimulator must maintain an absolute distance from magnets. The magnetism can stop the operation of the implant.
Magnet fragility
Neodymium magnets are ceramic materials, which means they are prone to chipping. Impact of two magnets will cause them breaking into small pieces.
Safe operation
Exercise caution. Neodymium magnets attract from a long distance and connect with massive power, often faster than you can react.
GPS and phone interference
A powerful magnetic field negatively affects the functioning of compasses in smartphones and navigation systems. Maintain magnets close to a smartphone to avoid breaking the sensors.
Allergy Warning
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If skin irritation appears, cease handling magnets and wear gloves.
This is not a toy
NdFeB magnets are not toys. Eating several magnets may result in them connecting inside the digestive tract, which poses a direct threat to life and requires immediate surgery.
Permanent damage
Monitor thermal conditions. Exposing the magnet to high heat will permanently weaken its magnetic structure and strength.
Keep away from computers
Device Safety: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
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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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