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BM 320x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090217
GTIN/EAN: 5906301812524
length
320 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
20550 g
3635.14 ZŁ with VAT / pcs + price for transport
2955.40 ZŁ net + 23% VAT / pcs
bulk discounts:
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Lifting power and shape of magnetic components can be calculated using our
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Physical properties - BM 320x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 320x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090217 |
| GTIN/EAN | 5906301812524 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 320 mm [±1 mm] |
| Width | 180 mm [±1 mm] |
| Height | 70 mm [±1 mm] |
| Weight | 20550 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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Pros as well as cons of rare earth magnets.
Strengths
- They have stable power, and over nearly ten years their attraction force decreases symbolically – ~1% (according to theory),
- They show high resistance to demagnetization induced by presence of other magnetic fields,
- The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Magnets have excellent magnetic induction on the outer side,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures reaching 230°C and above...
- Thanks to freedom in constructing and the capacity to modify to client solutions,
- Significant place in modern industrial fields – they serve a role in HDD drives, drive modules, diagnostic systems, and complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in miniature devices
Disadvantages
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 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 stable to moisture, when using outdoors
- We recommend cover - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated shapes.
- Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that small elements of these magnets can complicate diagnosis medical in case of swallowing.
- With large orders the cost of neodymium magnets is a challenge,
Pull force analysis
Maximum lifting force for a neodymium magnet – what it depends on?
- on a block made of mild steel, perfectly concentrating the magnetic flux
- whose thickness reaches at least 10 mm
- with a surface cleaned and smooth
- under conditions of no distance (metal-to-metal)
- during detachment in a direction vertical to the mounting surface
- at ambient temperature approx. 20 degrees Celsius
Practical lifting capacity: influencing factors
- Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
- Base massiveness – too thin plate does not close the flux, causing part of the flux to be wasted to the other side.
- Steel grade – ideal substrate is high-permeability steel. Stainless steels may attract less.
- Base smoothness – the smoother and more polished the plate, the better the adhesion and stronger the hold. Unevenness creates an air distance.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).
Lifting capacity was measured by applying a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate decreases the lifting capacity.
H&S for magnets
Magnetic media
Do not bring magnets close to a wallet, computer, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.
Nickel coating and allergies
It is widely known that nickel (the usual finish) is a potent allergen. For allergy sufferers, prevent direct skin contact or choose encased magnets.
Eye protection
Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Clashing of two magnets will cause them cracking into small pieces.
Dust is flammable
Powder generated during cutting of magnets is flammable. Do not drill into magnets unless you are an expert.
Hand protection
Large magnets can break fingers instantly. Do not place your hand between two attracting surfaces.
Permanent damage
Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and strength.
Adults only
Always store magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets clamping inside the body are tragic.
Keep away from electronics
An intense magnetic field interferes with the functioning of magnetometers in smartphones and GPS navigation. Keep magnets close to a device to avoid breaking the sensors.
Implant safety
For implant holders: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or request help to handle the magnets.
Conscious usage
Handle with care. Neodymium magnets attract from a long distance and connect with massive power, often faster than you can react.
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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