UMC 48x11/7x11.5 / N38 - cylindrical magnetic holder
cylindrical magnetic holder
Catalog no 320412
GTIN/EAN: 5906301814689
Diameter
48 mm [±1 mm]
internal diameter Ø
11/7 mm [±1 mm]
Height
11.5 mm [±1 mm]
Weight
114 g
Load capacity
63.00 kg / 617.82 N
Coating
[NiCuNi] Nickel
45.10 ZŁ with VAT / pcs + price for transport
36.67 ZŁ net + 23% VAT / pcs
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Technical data - UMC 48x11/7x11.5 / N38 - cylindrical magnetic holder
Specification / characteristics - UMC 48x11/7x11.5 / N38 - cylindrical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 320412 |
| GTIN/EAN | 5906301814689 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter | 48 mm [±1 mm] |
| internal diameter Ø | 11/7 mm [±1 mm] |
| Height | 11.5 mm [±1 mm] |
| Weight | 114 g |
| Load capacity ~ ? | 63.00 kg / 617.82 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% |
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 rare earth magnets.
Benefits
- They virtually do not lose power, because even after ten years the performance loss is only ~1% (in laboratory conditions),
- They do not lose their magnetic properties even under strong external field,
- The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Neodymium magnets ensure maximum magnetic induction on a contact point, which allows for strong attraction,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
- Considering the potential of flexible molding and adaptation to individualized projects, NdFeB magnets can be produced in a broad palette of geometric configurations, which amplifies use scope,
- Key role in electronics industry – they are used in data components, drive modules, advanced medical instruments, and technologically advanced constructions.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Disadvantages
- To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- Neodymium magnets lose strength 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
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
- We suggest casing - magnetic holder, due to difficulties in creating nuts inside the magnet and complex forms.
- Health risk to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. Additionally, tiny parts of these devices can complicate diagnosis medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Pull force analysis
Best holding force of the magnet in ideal parameters – what contributes to it?
- using a plate made of high-permeability steel, acting as a circuit closing element
- with a thickness minimum 10 mm
- with a plane perfectly flat
- under conditions of no distance (metal-to-metal)
- under perpendicular force vector (90-degree angle)
- in temp. approx. 20°C
Key elements affecting lifting force
- Distance (betwixt the magnet and the metal), since even a microscopic clearance (e.g. 0.5 mm) results in a drastic drop in force by up to 50% (this also applies to varnish, rust or dirt).
- Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Steel grade – the best choice is high-permeability steel. Hardened steels may have worse magnetic properties.
- Surface quality – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
- Temperature influence – hot environment reduces magnetic field. Exceeding the limit temperature can permanently damage the magnet.
Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet and the plate reduces the load capacity.
Safety rules for work with NdFeB magnets
Electronic devices
Avoid bringing magnets near a purse, computer, or TV. The magnetism can destroy these devices and erase data from cards.
Fragile material
Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. Wear goggles.
Crushing risk
Protect your hands. Two large magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!
Allergy Warning
Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If redness appears, immediately stop working with magnets and wear gloves.
Fire risk
Mechanical processing of neodymium magnets poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Permanent damage
Watch the temperature. Heating the magnet above 80 degrees Celsius will destroy its properties and pulling force.
Keep away from electronics
Remember: rare earth magnets generate a field that disrupts precision electronics. Maintain a safe distance from your phone, device, and navigation systems.
Danger to pacemakers
For implant holders: Strong magnetic fields affect medical devices. Keep minimum 30 cm distance or ask another person to handle the magnets.
Handling rules
Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Keep away from children
Adult use only. Small elements can be swallowed, causing severe trauma. Keep away from children and animals.
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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