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BM 510x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090220
GTIN/EAN: 5906301812555
length
510 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
32750 g
5253.21 ZŁ with VAT / pcs + price for transport
4270.90 ZŁ net + 23% VAT / pcs
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Technical details - BM 510x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 510x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090220 |
| GTIN/EAN | 5906301812555 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 510 mm [±1 mm] |
| Width | 180 mm [±1 mm] |
| Height | 70 mm [±1 mm] |
| Weight | 32750 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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Strengths as well as weaknesses of rare earth magnets.
Strengths
- They have stable power, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
- They are extremely resistant to demagnetization induced by presence of other magnetic fields,
- A magnet with a metallic nickel surface is more attractive,
- Neodymium magnets ensure maximum magnetic induction on a small area, which ensures high operational effectiveness,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of individual machining as well as adjusting to precise applications,
- Significant place in modern industrial fields – they are utilized in computer drives, brushless drives, precision medical tools, also other advanced devices.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Weaknesses
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Due to limitations in realizing threads and complicated forms in magnets, we recommend using casing - magnetic mount.
- Possible danger resulting from small fragments of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. Additionally, small components of these devices can complicate diagnosis medical in case of swallowing.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities
Lifting parameters
Detachment force of the magnet in optimal conditions – what affects it?
- with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
- whose transverse dimension reaches at least 10 mm
- with a surface perfectly flat
- under conditions of no distance (metal-to-metal)
- for force acting at a right angle (in the magnet axis)
- at conditions approx. 20°C
Lifting capacity in practice – influencing factors
- Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
- Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
- Plate thickness – insufficiently thick sheet causes magnetic saturation, causing part of the power to be wasted to the other side.
- Chemical composition of the base – mild steel attracts best. Alloy admixtures decrease magnetic properties and lifting capacity.
- Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Rough surfaces reduce efficiency.
- Temperature influence – hot environment weakens magnetic field. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was measured by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.
Precautions when working with NdFeB magnets
Nickel coating and allergies
Certain individuals suffer from a hypersensitivity to Ni, which is the standard coating for NdFeB magnets. Prolonged contact can result in a rash. We suggest use safety gloves.
Electronic hazard
Very strong magnetic fields can destroy records on payment cards, hard drives, and storage devices. Keep a distance of min. 10 cm.
Heat warning
Standard neodymium magnets (grade N) lose power when the temperature goes above 80°C. This process is irreversible.
Flammability
Machining of neodymium magnets carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Pacemakers
Warning for patients: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or request help to work with the magnets.
Fragile material
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Powerful field
Use magnets consciously. Their powerful strength can shock even professionals. Be vigilant and respect their force.
Serious injuries
Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Be careful!
Impact on smartphones
Note: rare earth magnets generate a field that interferes with precision electronics. Keep a safe distance from your mobile, device, and navigation systems.
Adults only
Strictly keep magnets away from children. Ingestion danger is significant, and the effects of magnets clamping inside the body are life-threatening.
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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