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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 parameters - 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 |
Chemical composition
| 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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Advantages and disadvantages of rare earth magnets.
Benefits
- They retain magnetic properties for almost 10 years – the drop is just ~1% (in theory),
- They maintain their magnetic properties even under close interference source,
- By applying a decorative coating of nickel, the element has an proper look,
- Neodymium magnets ensure maximum magnetic induction on a contact point, which ensures high operational effectiveness,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Possibility of detailed machining as well as optimizing to atypical conditions,
- Significant place in advanced technology sectors – they find application in HDD drives, brushless drives, advanced medical instruments, and industrial machines.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Cons
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
- Neodymium magnets lose force 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 extremely resistant to heat
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- We suggest a housing - magnetic mount, due to difficulties in producing nuts inside the magnet and complicated forms.
- Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Additionally, small components of these products are able to complicate diagnosis medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Lifting parameters
Maximum lifting capacity of the magnet – what affects it?
- with the use of a yoke made of special test steel, ensuring maximum field concentration
- possessing a thickness of min. 10 mm to ensure full flux closure
- characterized by lack of roughness
- under conditions of no distance (metal-to-metal)
- for force acting at a right angle (pull-off, not shear)
- at standard ambient temperature
Magnet lifting force in use – key factors
- Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or dirt) drastically reduces the pulling force, 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.
- Metal thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of converting into lifting capacity.
- Material composition – not every steel attracts identically. High carbon content worsen the attraction effect.
- Surface structure – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
- Temperature influence – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity was determined using a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, however under shearing force the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate reduces the holding force.
Safe handling of NdFeB magnets
Allergic reactions
Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction happens, cease working with magnets and wear gloves.
Operating temperature
Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its magnetic structure and strength.
Do not underestimate power
Exercise caution. Rare earth magnets act from a distance and connect with huge force, often quicker than you can move away.
Eye protection
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Wear goggles.
Dust is flammable
Powder created during cutting of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.
Electronic hazard
Do not bring magnets near a wallet, computer, or screen. The magnetic field can destroy these devices and erase data from cards.
This is not a toy
Always store magnets away from children. Risk of swallowing is high, and the effects of magnets clamping inside the body are very dangerous.
Keep away from electronics
Navigation devices and mobile phones are highly susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can ruin the sensors in your phone.
Pacemakers
For implant holders: Strong magnetic fields affect electronics. Maintain minimum 30 cm distance or request help to work with the magnets.
Hand protection
Danger of trauma: The attraction force is so immense that it can result in hematomas, pinching, and broken bones. Use thick gloves.
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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