LM TLN - 20 R / N38 - magnetic leviton
magnetic leviton
Catalog no 290492
GTIN/EAN: 5906301814504
Weight
1000 g
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Product card - LM TLN - 20 R / N38 - magnetic leviton
Specification / characteristics - LM TLN - 20 R / N38 - magnetic leviton
| properties | values |
|---|---|
| Cat. no. | 290492 |
| GTIN/EAN | 5906301814504 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 1000 g |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N38
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 12.2-12.6 | kGs |
| remenance Br [min. - max.] ? | 1220-1260 | mT |
| coercivity bHc ? | 10.8-11.5 | kOe |
| coercivity bHc ? | 860-915 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 36-38 | BH max MGOe |
| energy density [min. - max.] ? | 287-303 | BH max KJ/m |
| max. temperature ? | ≤ 80 | °C |
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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Advantages and disadvantages of rare earth magnets.
Pros
- They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (based on calculations),
- Neodymium magnets prove to be exceptionally resistant to loss of magnetic properties caused by external interference,
- The use of an metallic layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Neodymium magnets generate maximum magnetic induction on a small surface, which increases force concentration,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Possibility of individual modeling as well as adapting to complex conditions,
- Key role in high-tech industry – they serve a role in computer drives, electromotive mechanisms, diagnostic systems, also multitasking production systems.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Cons
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
- NdFeB 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
- They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Limited possibility of producing threads in the magnet and complicated forms - recommended is casing - magnetic holder.
- Health risk resulting from small fragments of magnets can be dangerous, in case of ingestion, which gains importance in the context of child safety. Additionally, small elements of these devices can be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Lifting parameters
Best holding force of the magnet in ideal parameters – what it depends on?
- with the use of a yoke made of special test steel, guaranteeing full magnetic saturation
- possessing a massiveness of min. 10 mm to ensure full flux closure
- characterized by smoothness
- without any clearance between the magnet and steel
- under vertical force direction (90-degree angle)
- at standard ambient temperature
Determinants of practical lifting force of a magnet
- Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
- Chemical composition of the base – mild steel attracts best. Alloy admixtures lower magnetic permeability and lifting capacity.
- Surface quality – the smoother and more polished the plate, the better the adhesion and stronger the hold. Unevenness creates an air distance.
- Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity was assessed using a smooth steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.
Safety rules for work with neodymium magnets
Life threat
Medical warning: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.
Warning for allergy sufferers
Allergy Notice: The nickel-copper-nickel coating contains nickel. If an allergic reaction happens, cease working with magnets and use protective gear.
Electronic devices
Powerful magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Stay away of min. 10 cm.
Respect the power
Before starting, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Be predictive.
Permanent damage
Regular neodymium magnets (N-type) lose power when the temperature exceeds 80°C. Damage is permanent.
Flammability
Mechanical processing of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Serious injuries
Risk of injury: The attraction force is so great that it can result in hematomas, crushing, and even bone fractures. Use thick gloves.
GPS and phone interference
A powerful magnetic field interferes with the operation of compasses in smartphones and navigation systems. Keep magnets near a smartphone to prevent breaking the sensors.
Shattering risk
Neodymium magnets are sintered ceramics, which means they are very brittle. Collision of two magnets leads to them breaking into shards.
This is not a toy
Product intended for adults. Small elements can be swallowed, leading to severe trauma. Keep away from children and animals.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
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Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
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Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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