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BM 380x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090218
GTIN/EAN: 5906301812531
length
380 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
24400 g
4185.08 ZŁ with VAT / pcs + price for transport
3402.50 ZŁ net + 23% VAT / pcs
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Technical details - BM 380x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 380x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090218 |
| GTIN/EAN | 5906301812531 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 380 mm [±1 mm] |
| Width | 180 mm [±1 mm] |
| Height | 70 mm [±1 mm] |
| Weight | 24400 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% |
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 Nd2Fe14B magnets.
Benefits
- They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (in testing),
- Magnets perfectly resist against demagnetization caused by external fields,
- Thanks to the smooth finish, the coating of Ni-Cu-Ni, gold-plated, or silver-plated gives an modern appearance,
- Magnetic induction on the working layer of the magnet turns out to be very high,
- 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 versatility in designing and the capacity to modify to client solutions,
- Fundamental importance in electronics industry – they are utilized in data components, brushless drives, precision medical tools, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in compact constructions
Disadvantages
- To avoid cracks under impact, we recommend using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- When exposed to humidity, magnets start to rust. For applications 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 threads and complex forms in magnets, we recommend using a housing - magnetic mount.
- Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these devices are able to be problematic in diagnostics medical after entering the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities
Holding force characteristics
Maximum lifting capacity of the magnet – what it depends on?
- using a plate made of mild steel, serving as a circuit closing element
- possessing a massiveness of min. 10 mm to ensure full flux closure
- characterized by lack of roughness
- under conditions of ideal adhesion (metal-to-metal)
- during detachment in a direction perpendicular to the plane
- at room temperature
Impact of factors on magnetic holding capacity in practice
- Distance – existence of any layer (rust, tape, gap) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
- Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Material type – ideal substrate is high-permeability steel. Stainless steels may attract less.
- Surface finish – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
- Thermal environment – temperature increase causes a temporary drop of induction. Check the thermal limit for a given model.
Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a slight gap between the magnet and the plate lowers the lifting capacity.
Safety rules for work with neodymium magnets
Beware of splinters
Protect your eyes. Magnets can fracture upon uncontrolled impact, launching shards into the air. Eye protection is mandatory.
Danger to pacemakers
Individuals with a pacemaker should keep an safe separation from magnets. The magnetic field can disrupt the functioning of the implant.
Keep away from computers
Avoid bringing magnets close to a wallet, computer, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.
Keep away from electronics
Remember: neodymium magnets produce a field that interferes with precision electronics. Keep a separation from your mobile, tablet, and navigation systems.
Allergic reactions
Studies show that the nickel plating (the usual finish) is a strong allergen. If you have an allergy, prevent direct skin contact or select coated magnets.
Hand protection
Watch your fingers. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing anything in their path. Be careful!
Thermal limits
Watch the temperature. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.
Handling guide
Handle with care. Rare earth magnets attract from a long distance and connect with huge force, often quicker than you can react.
Fire warning
Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.
Danger to the youngest
Neodymium magnets are not intended for children. Eating multiple magnets can lead to them connecting inside the digestive tract, which constitutes a critical condition and requires urgent medical intervention.
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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