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BM 850x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090224
GTIN/EAN: 5906301812593
length
850 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
54590 g
7729.93 ZŁ with VAT / pcs + price for transport
6284.50 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical of the product - BM 850x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 850x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090224 |
| GTIN/EAN | 5906301812593 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 850 mm [±1 mm] |
| Width | 180 mm [±1 mm] |
| Height | 70 mm [±1 mm] |
| Weight | 54590 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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Advantages and disadvantages of neodymium magnets.
Benefits
- Their power remains stable, and after approximately ten years it drops only by ~1% (according to research),
- They retain their magnetic properties even under external field action,
- A magnet with a shiny gold surface has better aesthetics,
- Neodymium magnets achieve maximum magnetic induction on a contact point, which allows for strong attraction,
- Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to modularity in forming and the ability to modify to client solutions,
- Versatile presence in electronics industry – they are utilized in mass storage devices, electromotive mechanisms, advanced medical instruments, and modern systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in compact constructions
Cons
- At very strong impacts they can break, therefore we recommend placing them in special holders. 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.
- They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Limited possibility of producing threads in the magnet and complicated forms - preferred is a housing - magnetic holder.
- Health risk to health – tiny shards of magnets are risky, if swallowed, which gains importance in the context of child safety. Furthermore, small components of these magnets are able to complicate diagnosis medical in case of swallowing.
- With budget limitations the cost of neodymium magnets is a challenge,
Holding force characteristics
Breakaway strength of the magnet in ideal conditions – what affects it?
- on a block made of mild steel, optimally conducting the magnetic flux
- whose thickness is min. 10 mm
- with a plane cleaned and smooth
- with total lack of distance (no impurities)
- during detachment in a direction vertical to the plane
- at standard ambient temperature
Key elements affecting lifting force
- 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 – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the maximum value.
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Material type – ideal substrate is pure iron steel. Cast iron may have worse magnetic properties.
- Surface quality – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
- Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was conducted on a smooth plate of optimal thickness, under a perpendicular pulling force, however under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.
Warnings
Medical interference
Medical warning: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.
Do not underestimate power
Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Magnets are brittle
Neodymium magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets leads to them breaking into shards.
Metal Allergy
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If skin irritation appears, cease working with magnets and wear gloves.
Serious injuries
Big blocks can crush fingers in a fraction of a second. Never place your hand between two attracting surfaces.
Compass and GPS
Navigation devices and mobile phones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can decalibrate the internal compass in your phone.
Keep away from children
Always store magnets out of reach of children. Risk of swallowing is significant, and the consequences of magnets clamping inside the body are fatal.
Heat sensitivity
Watch the temperature. Heating the magnet above 80 degrees Celsius will ruin its magnetic structure and strength.
Cards and drives
Powerful magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.
Fire risk
Combustion risk: Rare earth powder is explosive. Do not process magnets without safety gear as this risks ignition.
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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