LM TLN - 20 R / N38 - magnetic leviton
magnetic leviton
Catalog no 290492
GTIN/EAN: 5906301814504
Weight
1000 g
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Technical specification - 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 as well as disadvantages of neodymium magnets.
Strengths
- They do not lose magnetism, even over around 10 years – the reduction in lifting capacity is only ~1% (based on measurements),
- They are extremely resistant to demagnetization induced by external magnetic fields,
- By covering with a decorative layer of gold, the element has an professional look,
- They are known for high magnetic induction at the operating surface, which affects their effectiveness,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to the ability of precise molding and customization to custom solutions, NdFeB magnets can be created in a variety of shapes and sizes, which increases their versatility,
- Key role in modern industrial fields – they serve a role in data components, electromotive mechanisms, precision medical tools, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which makes them useful in miniature devices
Cons
- At very strong impacts they can break, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- Limited possibility of making nuts in the magnet and complicated forms - recommended is cover - mounting mechanism.
- Possible danger related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, tiny parts of these devices can disrupt the diagnostic process medical in case of swallowing.
- Due to neodymium price, their price is relatively high,
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what affects it?
- on a block made of mild steel, perfectly concentrating the magnetic field
- possessing a massiveness of min. 10 mm to avoid saturation
- with an polished touching surface
- without the slightest air gap between the magnet and steel
- under perpendicular force vector (90-degree angle)
- in neutral thermal conditions
What influences lifting capacity in practice
- Clearance – the presence of foreign body (rust, dirt, gap) interrupts the magnetic circuit, which lowers capacity rapidly (even by 50% at 0.5 mm).
- Direction of force – highest force is reached only during pulling at a 90° angle. The force required to slide of the magnet along the plate is standardly several times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux passes through the material instead of generating force.
- Material type – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
- Surface finish – full contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
- Temperature – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under perpendicular forces, in contrast under attempts to slide the magnet the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate lowers the holding force.
H&S for magnets
Danger to the youngest
Adult use only. Small elements can be swallowed, leading to severe trauma. Keep out of reach of children and animals.
Magnets are brittle
Watch out for shards. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.
Electronic devices
Data protection: Strong magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).
Thermal limits
Regular neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. This process is irreversible.
Crushing force
Protect your hands. Two powerful magnets will snap together immediately with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!
Fire warning
Mechanical processing of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Precision electronics
Remember: rare earth magnets generate a field that confuses sensitive sensors. Keep a separation from your phone, tablet, and navigation systems.
Nickel coating and allergies
Studies show that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, avoid direct skin contact and opt for encased magnets.
Danger to pacemakers
Health Alert: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.
Do not underestimate power
Be careful. Rare earth magnets attract from a distance and connect with huge force, often faster than you can move away.
Tabela kosztu i czasu dostawy
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23.00 ZŁ
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