UMC 16x5/2x5 / N38 - cylindrical magnetic holder
cylindrical magnetic holder
Catalog no 320406
GTIN/EAN: 5906301814627
Diameter
16 mm [±1 mm]
internal diameter Ø
5/2 mm [±1 mm]
Height
5 mm [±1 mm]
Weight
5.5 g
Load capacity
4.00 kg / 39.23 N
Coating
[NiCuNi] Nickel
3.33 ZŁ with VAT / pcs + price for transport
2.71 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical parameters - UMC 16x5/2x5 / N38 - cylindrical magnetic holder
Specification / characteristics - UMC 16x5/2x5 / N38 - cylindrical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 320406 |
| GTIN/EAN | 5906301814627 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter | 16 mm [±1 mm] |
| internal diameter Ø | 5/2 mm [±1 mm] |
| Height | 5 mm [±1 mm] |
| Weight | 5.5 g |
| Load capacity ~ ? | 4.00 kg / 39.23 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 |
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 |
Other products
![HH 36x7.5 [M6] / N38 - through hole magnetic holder](https://cdn3.dhit.pl/graphics/products/hh-36x7.5-m6-bez.jpg "HH 36x7.5 [M6] / N38 - through hole magnetic holder")
Strengths as well as weaknesses of Nd2Fe14B magnets.
Advantages
- They do not lose power, even over nearly ten years – the reduction in strength is only ~1% (according to tests),
- They maintain their magnetic properties even under strong external field,
- In other words, due to the aesthetic layer of nickel, the element gains visual value,
- The surface of neodymium magnets generates a powerful magnetic field – this is a key feature,
- Neodymium magnets are characterized by very 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 versatility in shaping and the capacity to customize to unusual requirements,
- Universal use in modern industrial fields – they find application in magnetic memories, drive modules, advanced medical instruments, also technologically advanced constructions.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Weaknesses
- Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only protects them against impacts but also raises their durability
- NdFeB magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape as well as 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
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Limited ability of creating threads in the magnet and complex forms - recommended is casing - mounting mechanism.
- Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these products can be problematic in diagnostics medical when they are in the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Holding force characteristics
Optimal lifting capacity of a neodymium magnet – what it depends on?
- with the use of a sheet made of special test steel, ensuring maximum field concentration
- possessing a thickness of at least 10 mm to avoid saturation
- characterized by lack of roughness
- without any clearance between the magnet and steel
- under axial force direction (90-degree angle)
- at room temperature
Impact of factors on magnetic holding capacity in practice
- Clearance – the presence of foreign body (rust, tape, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures lower magnetic permeability and holding force.
- Base smoothness – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness creates an air distance.
- Heat – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.
Warnings
Swallowing risk
Neodymium magnets are not suitable for play. Eating several magnets can lead to them pinching intestinal walls, which poses a direct threat to life and requires immediate surgery.
Fire warning
Mechanical processing of neodymium magnets carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.
Respect the power
Be careful. Rare earth magnets act from a long distance and connect with massive power, often faster than you can move away.
Magnetic media
Avoid bringing magnets close to a wallet, laptop, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.
Allergy Warning
Studies show that nickel (standard magnet coating) is a common allergen. For allergy sufferers, prevent touching magnets with bare hands or choose versions in plastic housing.
GPS Danger
Navigation devices and smartphones are extremely sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can decalibrate the sensors in your phone.
Magnets are brittle
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.
Heat sensitivity
Regular neodymium magnets (N-type) lose magnetization when the temperature goes above 80°C. This process is irreversible.
Pinching danger
Mind your fingers. Two large magnets will join instantly with a force of several hundred kilograms, destroying everything in their path. Be careful!
Warning for heart patients
Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.
Tabela kosztu i czasu dostawy
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Płatność przy odbiorze (pobranie):
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23.00 ZŁ
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