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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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Technical data of the product - 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 |
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other deals
Strengths as well as weaknesses of rare earth magnets.
Strengths
- They do not lose power, even during nearly 10 years – the drop in power is only ~1% (according to tests),
- They do not lose their magnetic properties even under close interference source,
- A magnet with a metallic nickel surface is more attractive,
- Magnets are characterized by maximum magnetic induction on the working surface,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to modularity in forming and the ability to adapt to specific needs,
- Fundamental importance in high-tech industry – they are commonly used in hard drives, electromotive mechanisms, advanced medical instruments, as well as multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in compact constructions
Cons
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
- We warn that neodymium magnets can lose 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 advise using waterproof magnets e.g. in rubber, plastic
- We recommend a housing - magnetic holder, due to difficulties in realizing threads inside the magnet and complicated forms.
- Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that small components of these products are able to disrupt the diagnostic process medical when they are in the body.
- With mass production the cost of neodymium magnets is economically unviable,
Holding force characteristics
Maximum magnetic pulling force – what contributes to it?
- using a plate made of mild steel, serving as a ideal flux conductor
- possessing a massiveness of minimum 10 mm to ensure full flux closure
- with an ground touching surface
- under conditions of ideal adhesion (metal-to-metal)
- under perpendicular force direction (90-degree angle)
- at room temperature
Determinants of practical lifting force of a magnet
- Air gap (between the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to paint, rust or debris).
- Angle of force application – maximum parameter is obtained only during perpendicular pulling. The shear force of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
- Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Material type – the best choice is pure iron steel. Cast iron may attract less.
- Plate texture – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, however under shearing force the holding force is lower. Additionally, even a small distance between the magnet and the plate lowers the load capacity.
Warnings
Material brittleness
NdFeB magnets are ceramic materials, which means they are prone to chipping. Impact of two magnets leads to them breaking into shards.
Fire risk
Drilling and cutting of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Data carriers
Equipment safety: Neodymium magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).
Avoid contact if allergic
A percentage of the population have a hypersensitivity to nickel, which is the standard coating for neodymium magnets. Extended handling can result in skin redness. We recommend wear protective gloves.
Hand protection
Protect your hands. Two large magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!
Thermal limits
Regular neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.
Adults only
Adult use only. Tiny parts can be swallowed, leading to intestinal necrosis. Store out of reach of kids and pets.
Implant safety
Warning for patients: Powerful magnets disrupt electronics. Keep at least 30 cm distance or request help to handle the magnets.
Do not underestimate power
Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Think ahead.
GPS Danger
Navigation devices and smartphones are highly susceptible to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the internal compass in your phone.
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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