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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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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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
View also offers
Strengths and weaknesses of rare earth magnets.
Advantages
- They retain magnetic properties for around 10 years – the drop is just ~1% (in theory),
- They maintain their magnetic properties even under strong external field,
- A magnet with a metallic nickel surface has an effective appearance,
- They are known for high magnetic induction at the operating surface, making them more effective,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to the potential of precise shaping and customization to custom solutions, NdFeB magnets can be modeled in a broad palette of shapes and sizes, which increases their versatility,
- Universal use in modern technologies – they find application in HDD drives, electric drive systems, precision medical tools, as well as other advanced devices.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Cons
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We advise keeping them in a steel housing, which not only protects them against impacts but also raises their durability
- Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in producing nuts and complicated forms in magnets, we propose using a housing - magnetic mount.
- Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. It is also worth noting that small elements of these devices are able to disrupt the diagnostic process medical in case of swallowing.
- Due to expensive raw materials, their price exceeds standard values,
Holding force characteristics
Highest magnetic holding force – what it depends on?
- on a base made of structural steel, effectively closing the magnetic flux
- with a cross-section of at least 10 mm
- with an ideally smooth contact surface
- without any air gap between the magnet and steel
- under axial force vector (90-degree angle)
- at temperature approx. 20 degrees Celsius
Determinants of practical lifting force of a magnet
- Distance – existence of any layer (rust, dirt, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Direction of force – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
- Steel thickness – too thin plate does not close the flux, causing part of the power to be lost into the air.
- Steel grade – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
- Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
- Thermal factor – hot environment weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity was assessed by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the holding force is lower. Additionally, even a slight gap between the magnet and the plate reduces the holding force.
H&S for magnets
Powerful field
Handle with care. Rare earth magnets attract from a distance and connect with massive power, often faster than you can react.
Operating temperature
Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.
Medical implants
For implant holders: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or request help to handle the magnets.
Do not give to children
Always keep magnets away from children. Risk of swallowing is significant, and the consequences of magnets connecting inside the body are life-threatening.
Physical harm
Risk of injury: The attraction force is so great that it can cause blood blisters, crushing, and even bone fractures. Protective gloves are recommended.
Skin irritation risks
Certain individuals experience a hypersensitivity to nickel, which is the standard coating for neodymium magnets. Extended handling can result in an allergic reaction. We recommend wear protective gloves.
Combustion hazard
Fire hazard: Neodymium dust is explosive. Avoid machining magnets without safety gear as this risks ignition.
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.
Shattering risk
Beware of splinters. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.
Protect data
Avoid bringing magnets close to a purse, computer, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.
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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