NCM 30x13.5x5 / N38 - channel magnetic holder
channel magnetic holder
Catalog no 360488
GTIN/EAN: 5906301814870
Diameter Ø
30 mm [±1 mm]
Height
13.5 mm [±1 mm]
Weight
14 g
Magnetization Direction
↑ axial
Load capacity
16.00 kg / 156.91 N
Coating
[NiCuNi] Nickel
9.40 ZŁ with VAT / pcs + price for transport
7.64 ZŁ net + 23% VAT / pcs
bulk discounts:
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Product card - NCM 30x13.5x5 / N38 - channel magnetic holder
Specification / characteristics - NCM 30x13.5x5 / N38 - channel magnetic holder
| properties | values |
|---|---|
| Cat. no. | 360488 |
| GTIN/EAN | 5906301814870 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 30 mm [±1 mm] |
| Height | 13.5 mm [±1 mm] |
| Weight | 14 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 16.00 kg / 156.91 N |
| Coating | [NiCuNi] Nickel |
| 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 |
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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Pros and cons of Nd2Fe14B magnets.
Advantages
- They retain attractive force for around 10 years – the loss is just ~1% (according to analyses),
- Magnets very well resist against loss of magnetization caused by ambient magnetic noise,
- By covering with a reflective layer of gold, the element presents an aesthetic look,
- Neodymium magnets achieve maximum magnetic induction on a their surface, which increases force concentration,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures approaching 230°C and above...
- Thanks to the option of accurate forming and adaptation to custom projects, NdFeB magnets can be manufactured in a wide range of forms and dimensions, which increases their versatility,
- Key role in innovative solutions – they are commonly used in mass storage devices, electric drive systems, precision medical tools, as well as modern systems.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Cons
- At very strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets decrease their strength 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 stability even at temperatures up to 230°C
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- Due to limitations in creating threads and complicated shapes in magnets, we propose using a housing - magnetic mechanism.
- Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the context of child health protection. Additionally, small elements of these magnets are able to complicate diagnosis medical in case of swallowing.
- With mass production the cost of neodymium magnets can be a barrier,
Pull force analysis
Detachment force of the magnet in optimal conditions – what contributes to it?
- on a block made of structural steel, optimally conducting the magnetic flux
- with a thickness minimum 10 mm
- characterized by lack of roughness
- under conditions of ideal adhesion (surface-to-surface)
- for force acting at a right angle (pull-off, not shear)
- in neutral thermal conditions
Magnet lifting force in use – key factors
- Gap (betwixt the magnet and the metal), because even a very small clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, 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. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Plate material – low-carbon steel attracts best. Alloy steels decrease magnetic properties and holding force.
- Surface finish – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
- Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).
Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate lowers the holding force.
Precautions when working with neodymium magnets
No play value
Neodymium magnets are not intended for children. Accidental ingestion of a few magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and requires urgent medical intervention.
Phone sensors
GPS units and mobile phones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.
Do not underestimate power
Handle magnets consciously. Their immense force can surprise even professionals. Stay alert and do not underestimate their force.
Sensitization to coating
Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, refrain from touching magnets with bare hands or select versions in plastic housing.
Beware of splinters
Watch out for shards. Magnets can explode upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.
Medical interference
People with a heart stimulator must keep an safe separation from magnets. The magnetic field can disrupt the functioning of the implant.
Bone fractures
Big blocks can smash fingers instantly. Never put your hand between two attracting surfaces.
Threat to electronics
Equipment safety: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).
Do not overheat magnets
Watch the temperature. Heating the magnet to high heat will permanently weaken its magnetic structure and pulling force.
Fire warning
Fire warning: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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14.99 ZŁ
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Płatność przy odbiorze (pobranie):
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23.00 ZŁ
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