LM TLN - 20 R / N38 - magnetic leviton
magnetic leviton
Catalog no 290492
GTIN/EAN: 5906301814504
Weight
1000 g
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Technical details - 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 |
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 rare earth magnets.
Strengths
- They do not lose power, even after approximately ten years – the reduction in lifting capacity is only ~1% (theoretically),
- They are extremely resistant to demagnetization induced by presence of other magnetic fields,
- Thanks to the smooth finish, the coating of nickel, gold-plated, or silver gives an elegant appearance,
- Magnetic induction on the surface of the magnet turns out to be maximum,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
- Due to the potential of flexible molding and adaptation to unique requirements, magnetic components can be modeled in a broad palette of forms and dimensions, which amplifies use scope,
- Fundamental importance in modern technologies – they are commonly used in computer drives, electric motors, diagnostic systems, also other advanced devices.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Limitations
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a steel housing, which not only protects them against impacts but also increases their durability
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- We suggest casing - magnetic mount, due to difficulties in creating threads inside the magnet and complex shapes.
- Possible danger related to microscopic parts of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Furthermore, small components of these devices can disrupt the diagnostic process medical in case of swallowing.
- With mass production the cost of neodymium magnets is a challenge,
Holding force characteristics
Optimal lifting capacity of a neodymium magnet – what affects it?
- with the contact of a sheet made of special test steel, ensuring full magnetic saturation
- with a cross-section minimum 10 mm
- with a plane free of scratches
- under conditions of no distance (metal-to-metal)
- under vertical force vector (90-degree angle)
- in stable room temperature
Practical lifting capacity: influencing factors
- Distance (betwixt the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) leads to a reduction in force by up to 50% (this also applies to paint, rust or debris).
- Load vector – maximum parameter is available only during perpendicular pulling. The resistance to sliding of the magnet along the plate is standardly several times lower (approx. 1/5 of the lifting capacity).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Plate material – low-carbon steel attracts best. Alloy admixtures decrease magnetic permeability and holding force.
- Surface condition – ground elements ensure maximum contact, which improves field saturation. Rough surfaces reduce efficiency.
- Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was determined with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate lowers the lifting capacity.
H&S for magnets
Physical harm
Large magnets can smash fingers instantly. Under no circumstances put your hand betwixt two strong magnets.
Choking Hazard
NdFeB magnets are not toys. Accidental ingestion of several magnets can lead to them pinching intestinal walls, which poses a severe health hazard and requires urgent medical intervention.
Nickel coating and allergies
Some people have a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Prolonged contact may cause skin redness. We suggest use safety gloves.
Flammability
Powder generated during cutting of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.
Demagnetization risk
Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.
Safe operation
Handle magnets with awareness. Their powerful strength can shock even experienced users. Stay alert and do not underestimate their power.
Threat to navigation
An intense magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Maintain magnets near a device to prevent damaging the sensors.
Warning for heart patients
For implant holders: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.
Safe distance
Very strong magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Keep a distance of min. 10 cm.
Shattering risk
Despite the nickel coating, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
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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