BM 750x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090223
GTIN: 5906301812586
length
750 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
48150 g
6914.94 ZŁ with VAT / pcs + price for transport
5621.90 ZŁ net + 23% VAT / pcs
bulk discounts:
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Magnetic properties of material
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Pros as well as cons of rare earth magnets.
Besides their durability, neodymium magnets are valued for these benefits:
- They do not lose strength, even during nearly ten years – the reduction in strength is only ~1% (according to tests),
- Magnets very well defend themselves against demagnetization caused by foreign field sources,
- A magnet with a smooth nickel surface has an effective appearance,
- Magnetic induction on the top side of the magnet turns out to be very high,
- Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to versatility in forming and the capacity to adapt to complex applications,
- Fundamental importance in modern industrial fields – they serve a role in HDD drives, brushless drives, medical equipment, as well as complex engineering applications.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Drawbacks and weaknesses of neodymium magnets: application proposals
- They are fragile upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets decrease 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 durability even at temperatures up to 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 resistant to moisture, when using outdoors
- Due to limitations in creating nuts and complex forms in magnets, we propose using casing - magnetic holder.
- Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child safety. Furthermore, small components of these devices can complicate diagnosis medical when they are in the body.
- Due to complex production process, their price is relatively high,
Maximum lifting force for a neodymium magnet – what affects it?
The load parameter shown concerns the peak performance, measured under ideal test conditions, specifically:
- with the application of a sheet made of low-carbon steel, ensuring maximum field concentration
- whose thickness is min. 10 mm
- characterized by even structure
- without any air gap between the magnet and steel
- during detachment in a direction perpendicular to the plane
- at ambient temperature approx. 20 degrees Celsius
Key elements affecting lifting force
Bear in mind that the magnet holding may be lower influenced by elements below, in order of importance:
- Distance (betwixt the magnet and the plate), since even a microscopic distance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or debris).
- Load vector – maximum parameter is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate is standardly many times lower (approx. 1/5 of the lifting capacity).
- Plate thickness – insufficiently thick sheet does not accept the full field, causing part of the power to be wasted into the air.
- Chemical composition of the base – mild steel gives the best results. Higher carbon content decrease magnetic permeability and lifting capacity.
- Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
- Temperature influence – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.
* Lifting capacity was measured by applying a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under parallel forces the holding force is lower. In addition, even a small distance {between} the magnet and the plate lowers the lifting capacity.
Safety rules for work with neodymium magnets
Data carriers
Very strong magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Keep a distance of min. 10 cm.
Bone fractures
Big blocks can smash fingers in a fraction of a second. Never put your hand betwixt two strong magnets.
Conscious usage
Handle magnets with awareness. Their powerful strength can shock even experienced users. Stay alert and do not underestimate their force.
Danger to the youngest
These products are not intended for children. Accidental ingestion of a few magnets can lead to them pinching intestinal walls, which constitutes a severe health hazard and requires immediate surgery.
Keep away from electronics
Note: rare earth magnets generate a field that interferes with sensitive sensors. Keep a separation from your phone, device, and navigation systems.
Magnets are brittle
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Health Danger
Warning for patients: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.
Dust explosion hazard
Mechanical processing of NdFeB material carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Power loss in heat
Keep cool. NdFeB magnets are sensitive to temperature. If you require operation above 80°C, ask us about special high-temperature series (H, SH, UH).
Nickel allergy
A percentage of the population suffer from a hypersensitivity to nickel, which is the standard coating for neodymium magnets. Prolonged contact may cause an allergic reaction. We suggest wear protective gloves.
Warning!
Details about risks in the article: Magnet Safety Guide.
