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
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
45.10 zł with VAT / pcs + price for transport
36.67 zł net + 23% VAT / pcs
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Technical details - 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 |
| Magnetization Direction | ↑ axial |
| 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths and weaknesses of rare earth magnets.
Strengths
- They do not lose magnetism, even over approximately 10 years – the reduction in power is only ~1% (according to tests),
- Neodymium magnets prove to be remarkably resistant to demagnetization caused by magnetic disturbances,
- Thanks to the metallic finish, the layer of nickel, gold-plated, or silver gives an aesthetic appearance,
- The surface of neodymium magnets generates a concentrated magnetic field – this is one of their assets,
- Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to freedom in designing and the ability to customize to individual projects,
- Wide application in advanced technology sectors – they serve a role in computer drives, electric drive systems, medical equipment, also industrial machines.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Limitations
- To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 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 stable to moisture, when using outdoors
- Due to limitations in creating nuts and complicated forms in magnets, we propose using a housing - magnetic mount.
- Potential hazard to health – tiny shards of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these products can be problematic in diagnostics medical after entering the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Lifting parameters
Highest magnetic holding force – what it depends on?
- with the contact of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
- whose thickness reaches at least 10 mm
- characterized by lack of roughness
- with zero gap (no impurities)
- under vertical force vector (90-degree angle)
- at room temperature
Practical lifting capacity: influencing factors
- Gap (betwixt the magnet and the plate), as even a very small distance (e.g. 0.5 mm) results in a drastic drop in force by up to 50% (this also applies to paint, rust or dirt).
- Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
- Steel thickness – insufficiently thick plate does not close the flux, causing part of the flux to be wasted to the other side.
- Steel grade – the best choice is high-permeability steel. Hardened steels may attract less.
- Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).
Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, however under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.
Safe handling of neodymium magnets
Protect data
Avoid bringing magnets close to a wallet, laptop, or screen. The magnetism can permanently damage these devices and wipe information from cards.
Respect the power
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
Fragile material
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.
Sensitization to coating
It is widely known that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, avoid touching magnets with bare hands and opt for encased magnets.
Keep away from electronics
A powerful magnetic field interferes with the functioning of compasses in smartphones and navigation systems. Do not bring magnets near a smartphone to avoid breaking the sensors.
Flammability
Dust produced during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Product not for children
Adult use only. Small elements pose a choking risk, causing severe trauma. Keep out of reach of kids and pets.
Life threat
For implant holders: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or request help to handle the magnets.
Do not overheat magnets
Keep cool. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).
Physical harm
Watch your fingers. Two powerful magnets will snap together immediately with a force of massive weight, destroying anything in their path. Be careful!
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
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12.30 ZŁ
Płatność przy odbiorze (pobranie):
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Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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