NCM 20x13.5x5 / N38 - channel magnetic holder
channel magnetic holder
Catalog no 360487
GTIN/EAN: 5906301814863
Diameter Ø
20 mm [±1 mm]
Height
13.5 mm [±1 mm]
Weight
9.2 g
Magnetization Direction
↑ axial
Load capacity
8.00 kg / 78.45 N
Coating
[NiCuNi] Nickel
7.29 ZŁ with VAT / pcs + price for transport
5.93 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical of the product - NCM 20x13.5x5 / N38 - channel magnetic holder
Specification / characteristics - NCM 20x13.5x5 / N38 - channel magnetic holder
| properties | values |
|---|---|
| Cat. no. | 360487 |
| GTIN/EAN | 5906301814863 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 20 mm [±1 mm] |
| Height | 13.5 mm [±1 mm] |
| Weight | 9.2 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 8.00 kg / 78.45 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 as well as cons of neodymium magnets.
Advantages
- They retain attractive force for almost ten years – the drop is just ~1% (based on simulations),
- Neodymium magnets remain remarkably resistant to loss of magnetic properties caused by external interference,
- In other words, due to the smooth layer of gold, the element gains a professional look,
- Magnetic induction on the top side of the magnet is very high,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Thanks to the ability of precise forming and customization to individualized solutions, NdFeB magnets can be created in a broad palette of shapes and sizes, which makes them more universal,
- Huge importance in electronics industry – they are commonly used in magnetic memories, drive modules, medical devices, as well as modern systems.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Weaknesses
- 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 shields the magnet but also improves its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (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 very resistant to heat
- 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 producing threads in the magnet and complicated shapes - preferred is casing - magnet mounting.
- Possible danger resulting from small fragments of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Additionally, small elements of these products are able to be problematic in diagnostics medical in case of swallowing.
- Due to neodymium price, their price exceeds standard values,
Lifting parameters
Magnetic strength at its maximum – what contributes to it?
- using a sheet made of high-permeability steel, serving as a circuit closing element
- with a cross-section minimum 10 mm
- with a plane perfectly flat
- under conditions of no distance (surface-to-surface)
- under vertical force vector (90-degree angle)
- in neutral thermal conditions
Impact of factors on magnetic holding capacity in practice
- Gap between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of nominal force).
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Steel grade – the best choice is high-permeability steel. Hardened steels may attract less.
- Surface condition – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
- Temperature – heating the magnet results in weakening of induction. Check the thermal limit for a given model.
Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the load capacity is reduced by as much as 75%. Moreover, even a slight gap between the magnet and the plate lowers the load capacity.
H&S for magnets
Conscious usage
Handle magnets consciously. Their huge power can surprise even experienced users. Be vigilant and respect their force.
Threat to electronics
Do not bring magnets near a purse, laptop, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.
Machining danger
Drilling and cutting of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Crushing risk
Protect your hands. Two powerful magnets will join instantly with a force of massive weight, destroying anything in their path. Exercise extreme caution!
Adults only
NdFeB magnets are not suitable for play. Accidental ingestion of multiple magnets may result in them pinching intestinal walls, which poses a direct threat to life and necessitates immediate surgery.
Demagnetization risk
Watch the temperature. Heating the magnet above 80 degrees Celsius will ruin its properties and pulling force.
Material brittleness
Watch out for shards. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.
Compass and GPS
GPS units and smartphones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Allergy Warning
Medical facts indicate that nickel (standard magnet coating) is a common allergen. If you have an allergy, refrain from direct skin contact or opt for encased magnets.
Medical implants
Individuals with a ICD must keep an safe separation from magnets. The magnetic field can stop the operation of the implant.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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Płatność przy odbiorze (pobranie):
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Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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