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BM 650x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090222
GTIN/EAN: 5906301812579
length
650 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
41750 g
6131.43 ZŁ with VAT / pcs + price for transport
4984.90 ZŁ net + 23% VAT / pcs
bulk discounts:
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Product card - BM 650x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 650x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090222 |
| GTIN/EAN | 5906301812579 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 650 mm [±1 mm] |
| Width | 180 mm [±1 mm] |
| Height | 70 mm [±1 mm] |
| Weight | 41750 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% |
Ecology and recycling (GPSR)
| 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.
Strengths
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
- They maintain their magnetic properties even under close interference source,
- By applying a smooth coating of nickel, the element gains an aesthetic look,
- Magnetic induction on the surface of the magnet is extremely intense,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures reaching 230°C and above...
- Possibility of exact creating and modifying to complex applications,
- Versatile presence in innovative solutions – they are utilized in mass storage devices, brushless drives, medical devices, also complex engineering applications.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Weaknesses
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
- Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
- Limited possibility of producing threads in the magnet and complicated shapes - recommended is a housing - magnetic holder.
- Possible danger resulting from small fragments of magnets are risky, if swallowed, which gains importance in the context of child health protection. Furthermore, small components of these products can disrupt the diagnostic process medical in case of swallowing.
- Due to neodymium price, their price is higher than average,
Holding force characteristics
Maximum lifting force for a neodymium magnet – what affects it?
- on a plate made of mild steel, optimally conducting the magnetic flux
- whose thickness is min. 10 mm
- with a plane cleaned and smooth
- without the slightest clearance between the magnet and steel
- during detachment in a direction vertical to the mounting surface
- at room temperature
Determinants of lifting force in real conditions
- Gap (betwixt the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) results in a reduction in force by up to 50% (this also applies to paint, rust or dirt).
- Load vector – highest force is available only during perpendicular pulling. The shear force of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
- Plate thickness – too thin plate does not accept the full field, causing part of the flux to be wasted into the air.
- Steel type – mild steel attracts best. Alloy steels reduce magnetic permeability and holding force.
- Plate texture – ground elements guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
- Thermal factor – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity was measured by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the holding force is lower. Additionally, even a small distance between the magnet and the plate decreases the lifting capacity.
Safety rules for work with neodymium magnets
Fire warning
Machining of NdFeB material poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Eye protection
Watch out for shards. Magnets can fracture upon violent connection, ejecting shards into the air. Eye protection is mandatory.
Keep away from children
NdFeB magnets are not suitable for play. Swallowing multiple magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and necessitates urgent medical intervention.
Health Danger
Individuals with a ICD have to keep an large gap from magnets. The magnetism can interfere with the operation of the life-saving device.
Magnetic media
Very strong magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Stay away of min. 10 cm.
Threat to navigation
A powerful magnetic field negatively affects the functioning of compasses in smartphones and GPS navigation. Maintain magnets close to a device to prevent damaging the sensors.
Permanent damage
Do not overheat. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).
Nickel coating and allergies
A percentage of the population suffer from a hypersensitivity to Ni, which is the typical protective layer for NdFeB magnets. Frequent touching may cause an allergic reaction. We suggest use safety gloves.
Physical harm
Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!
Immense force
Use magnets with awareness. Their immense force can shock even professionals. Stay alert and respect their power.
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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