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BM 380x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090218
GTIN/EAN: 5906301812531
length
380 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
24400 g
4185.08 ZŁ with VAT / pcs + price for transport
3402.50 ZŁ net + 23% VAT / pcs
bulk discounts:
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Product card - BM 380x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 380x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090218 |
| GTIN/EAN | 5906301812531 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 380 mm [±1 mm] |
| Width | 180 mm [±1 mm] |
| Height | 70 mm [±1 mm] |
| Weight | 24400 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 |
Material specification
| 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 |
Other deals
Strengths and weaknesses of neodymium magnets.
Pros
- They do not lose power, even after around 10 years – the drop in lifting capacity is only ~1% (theoretically),
- Magnets perfectly protect themselves against loss of magnetization caused by ambient magnetic noise,
- A magnet with a smooth gold surface has an effective appearance,
- Magnets are characterized by huge magnetic induction on the surface,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures reaching 230°C and above...
- Possibility of individual machining as well as adjusting to atypical conditions,
- Significant place in innovative solutions – they are commonly used in data components, electric drive systems, advanced medical instruments, also multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in compact constructions
Limitations
- At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- Limited possibility of producing nuts in the magnet and complicated shapes - preferred is cover - magnetic holder.
- Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. Additionally, small elements of these products can complicate diagnosis medical after entering the body.
- Due to expensive raw materials, their price is higher than average,
Pull force analysis
Detachment force of the magnet in optimal conditions – what affects it?
- using a sheet made of high-permeability steel, acting as a ideal flux conductor
- whose thickness reaches at least 10 mm
- with a surface perfectly flat
- with total lack of distance (without impurities)
- under axial force vector (90-degree angle)
- at temperature approx. 20 degrees Celsius
Key elements affecting lifting force
- Gap between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Direction of force – maximum parameter is available only during pulling at a 90° angle. The shear force of the magnet along the surface is typically several times smaller (approx. 1/5 of the lifting capacity).
- Base massiveness – too thin steel causes magnetic saturation, causing part of the flux to be wasted into the air.
- Metal type – not every steel reacts the same. Alloy additives worsen the interaction with the magnet.
- Base smoothness – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
- Thermal environment – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity was measured with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate reduces the lifting capacity.
Safe handling of NdFeB magnets
Heat warning
Watch the temperature. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and strength.
Medical implants
Individuals with a pacemaker must keep an large gap from magnets. The magnetism can disrupt the functioning of the life-saving device.
Dust explosion hazard
Fire hazard: Rare earth powder is explosive. Avoid machining magnets without safety gear as this may cause fire.
GPS Danger
Be aware: neodymium magnets generate a field that interferes with precision electronics. Keep a separation from your mobile, device, and navigation systems.
Safe operation
Use magnets consciously. Their immense force can shock even professionals. Stay alert and do not underestimate their power.
Fragile material
Despite the nickel coating, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Pinching danger
Mind your fingers. Two large magnets will join immediately with a force of massive weight, destroying everything in their path. Exercise extreme caution!
Safe distance
Do not bring magnets near a purse, laptop, or TV. The magnetism can destroy these devices and wipe information from cards.
Adults only
Always store magnets out of reach of children. Ingestion danger is significant, and the effects of magnets clamping inside the body are fatal.
Avoid contact if allergic
Allergy Notice: The nickel-copper-nickel coating contains nickel. If redness appears, cease working with magnets and use protective gear.
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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