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BM 450x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090219
GTIN/EAN: 5906301812548
length
450 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
28900 g
4734.89 ZŁ with VAT / pcs + price for transport
3849.50 ZŁ net + 23% VAT / pcs
bulk discounts:
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Product card - BM 450x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 450x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090219 |
| GTIN/EAN | 5906301812548 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 450 mm [±1 mm] |
| Width | 180 mm [±1 mm] |
| Height | 70 mm [±1 mm] |
| Weight | 28900 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Advantages and disadvantages of rare earth magnets.
Benefits
- They retain magnetic properties for around ten years – the loss is just ~1% (according to analyses),
- They are resistant to demagnetization induced by external disturbances,
- Thanks to the elegant finish, the coating of Ni-Cu-Ni, gold, or silver gives an visually attractive appearance,
- The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to versatility in shaping and the ability to adapt to complex applications,
- Significant place in advanced technology sectors – they serve a role in magnetic memories, motor assemblies, medical devices, also other advanced devices.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Limitations
- At very strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets lose their strength 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 stability even at temperatures up to 230°C
- Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- We recommend cover - magnetic mount, due to difficulties in creating nuts inside the magnet and complicated shapes.
- Possible danger related to microscopic parts of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small elements of these devices can complicate diagnosis medical after entering the body.
- Due to expensive raw materials, their price exceeds standard values,
Lifting parameters
Maximum magnetic pulling force – what affects it?
- using a plate made of low-carbon steel, functioning as a circuit closing element
- with a thickness minimum 10 mm
- characterized by even structure
- without any air gap between the magnet and steel
- under axial application of breakaway force (90-degree angle)
- at temperature approx. 20 degrees Celsius
Lifting capacity in practice – influencing factors
- Distance – existence of foreign body (rust, dirt, air) interrupts the magnetic circuit, which lowers power rapidly (even by 50% at 0.5 mm).
- Load vector – highest force is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is standardly several times smaller (approx. 1/5 of the lifting capacity).
- Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Material composition – different alloys reacts the same. High carbon content worsen the attraction effect.
- Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Uneven metal reduce efficiency.
- Thermal conditions – neodymium magnets 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 was measured with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under shearing force the holding force is lower. Moreover, even a small distance between the magnet and the plate lowers the holding force.
Precautions when working with neodymium magnets
Magnetic interference
Remember: rare earth magnets generate a field that interferes with precision electronics. Keep a safe distance from your phone, tablet, and navigation systems.
Cards and drives
Avoid bringing magnets near a purse, computer, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.
Fragile material
Neodymium magnets are sintered ceramics, which means they are very brittle. Clashing of two magnets will cause them cracking into small pieces.
Skin irritation risks
A percentage of the population have a sensitization to nickel, which is the standard coating for neodymium magnets. Frequent touching may cause an allergic reaction. We suggest use safety gloves.
Safe operation
Handle with care. Neodymium magnets act from a distance and connect with huge force, often faster than you can react.
This is not a toy
Neodymium magnets are not suitable for play. Accidental ingestion of a few magnets can lead to them connecting inside the digestive tract, which constitutes a critical condition and requires immediate surgery.
Crushing risk
Watch your fingers. Two powerful magnets will join instantly with a force of massive weight, destroying anything in their path. Exercise extreme caution!
Implant safety
Patients with a heart stimulator must maintain an absolute distance from magnets. The magnetism can disrupt the functioning of the implant.
Mechanical processing
Fire hazard: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Demagnetization risk
Watch the temperature. Exposing the magnet to high heat will ruin its magnetic structure and pulling force.
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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