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 parameters 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% |
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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Pros as well as cons of neodymium magnets.
Advantages
- They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (based on calculations),
- They do not lose their magnetic properties even under external field action,
- A magnet with a metallic silver surface is more attractive,
- The surface of neodymium magnets generates a maximum magnetic field – this is a distinguishing feature,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
- Thanks to freedom in forming and the capacity to adapt to unusual requirements,
- Universal use in advanced technology sectors – they are used in HDD drives, drive modules, medical devices, and multitasking production systems.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Weaknesses
- To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets lose 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 stability 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, in case of application outdoors
- Limited possibility of making threads in the magnet and complex forms - preferred is a housing - magnet mounting.
- Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these devices are able to be problematic in diagnostics medical in case of swallowing.
- Due to neodymium price, their price is higher than average,
Lifting parameters
Maximum lifting force for a neodymium magnet – what it depends on?
- with the contact of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
- possessing a massiveness of minimum 10 mm to avoid saturation
- characterized by even structure
- without any insulating layer between the magnet and steel
- for force applied at a right angle (in the magnet axis)
- at standard ambient temperature
Impact of factors on magnetic holding capacity in practice
- Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the pulling force, often by half at just 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 surface is standardly several times lower (approx. 1/5 of the lifting capacity).
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
- Metal type – different alloys reacts the same. High carbon content weaken the attraction effect.
- Surface finish – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
- Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).
Lifting capacity testing was performed on a smooth plate of suitable thickness, under perpendicular forces, however under shearing force the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate decreases the lifting capacity.
Warnings
Adults only
Strictly store magnets away from children. Ingestion danger is high, and the effects of magnets clamping inside the body are tragic.
Operating temperature
Monitor thermal conditions. Exposing the magnet to high heat will destroy its magnetic structure and pulling force.
Pinching danger
Protect your hands. Two powerful magnets will join immediately with a force of massive weight, destroying anything in their path. Exercise extreme caution!
Magnet fragility
Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Wear goggles.
Medical implants
Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have medical devices.
Handling guide
Exercise caution. Rare earth magnets attract from a distance and snap with huge force, often quicker than you can move away.
Skin irritation risks
Medical facts indicate that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, prevent touching magnets with bare hands and choose encased magnets.
Fire risk
Combustion risk: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this may cause fire.
Electronic devices
Avoid bringing magnets close to a wallet, computer, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.
Magnetic interference
A strong magnetic field negatively affects the operation of compasses in smartphones and GPS navigation. Keep magnets near a device to avoid breaking the sensors.
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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