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BM 750x180x70 [4x M8] - magnetic beam
magnetic beam
Catalog no 090223
GTIN/EAN: 5906301812586
length
750 mm [±1 mm]
Width
180 mm [±1 mm]
Height
70 mm [±1 mm]
Weight
48150 g
6914.94 ZŁ with VAT / pcs + price for transport
5621.90 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical data - BM 750x180x70 [4x M8] - magnetic beam
Specification / characteristics - BM 750x180x70 [4x M8] - magnetic beam
| properties | values |
|---|---|
| Cat. no. | 090223 |
| GTIN/EAN | 5906301812586 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 750 mm [±1 mm] |
| Width | 180 mm [±1 mm] |
| Height | 70 mm [±1 mm] |
| Weight | 48150 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% |
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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Strengths as well as weaknesses of neodymium magnets.
Pros
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
- They retain their magnetic properties even under external field action,
- Thanks to the glossy finish, the surface of Ni-Cu-Ni, gold-plated, or silver gives an professional appearance,
- Magnets are characterized by maximum magnetic induction on the active area,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
- Thanks to freedom in forming and the capacity to modify to client solutions,
- Versatile presence in modern industrial fields – they find application in mass storage devices, drive modules, medical devices, also industrial machines.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Weaknesses
- They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects 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 drop of power (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
- Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
- We recommend casing - magnetic mount, due to difficulties in realizing threads inside the magnet and complicated forms.
- Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these magnets can complicate diagnosis medical when they are in the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Lifting parameters
Maximum magnetic pulling force – what contributes to it?
- with the contact of a sheet made of low-carbon steel, ensuring maximum field concentration
- whose thickness reaches at least 10 mm
- with an polished contact surface
- with direct contact (without paint)
- during pulling in a direction vertical to the mounting surface
- in temp. approx. 20°C
Lifting capacity in practice – influencing factors
- Gap (betwixt the magnet and the metal), because even a very small distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to paint, rust or dirt).
- Direction of force – maximum parameter is reached only during perpendicular pulling. The shear force of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
- Steel thickness – insufficiently thick steel causes magnetic saturation, causing part of the power to be lost to the other side.
- Material composition – different alloys attracts identically. High carbon content worsen the attraction effect.
- Base smoothness – the more even the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
- Temperature influence – hot environment weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was measured with the use of a polished steel plate of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet and the plate lowers the holding force.
Warnings
Precision electronics
A powerful magnetic field disrupts the functioning of compasses in phones and navigation systems. Maintain magnets close to a smartphone to prevent breaking the sensors.
Permanent damage
Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.
Pacemakers
People with a ICD have to keep an safe separation from magnets. The magnetic field can disrupt the functioning of the life-saving device.
Choking Hazard
Strictly keep magnets away from children. Ingestion danger is high, and the effects of magnets clamping inside the body are very dangerous.
Threat to electronics
Very strong magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Keep a distance of at least 10 cm.
Do not drill into magnets
Machining of neodymium magnets poses a fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Shattering risk
NdFeB magnets are ceramic materials, meaning they are prone to chipping. Collision of two magnets leads to them breaking into shards.
Sensitization to coating
Allergy Notice: The nickel-copper-nickel coating contains nickel. If redness appears, immediately stop handling magnets and wear gloves.
Crushing force
Big blocks can break fingers in a fraction of a second. Never put your hand betwixt two strong magnets.
Powerful field
Be careful. Rare earth magnets act from a distance and snap with massive power, often faster than you can move away.
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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