UMS 48x18x8.5x11.5 / N38 - conical magnetic holder
conical magnetic holder
Catalog no 220403
GTIN/EAN: 5906301814221
Diameter Ø
48 mm [±1 mm]
cone dimension Ø
18x8.5 mm [±1 mm]
Height
11.5 mm [±1 mm]
Weight
125 g
Magnetization Direction
↑ axial
Load capacity
68.00 kg / 666.85 N
Coating
[NiCuNi] Nickel
44.92 ZŁ with VAT / pcs + price for transport
36.52 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical of the product - UMS 48x18x8.5x11.5 / N38 - conical magnetic holder
Specification / characteristics - UMS 48x18x8.5x11.5 / N38 - conical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 220403 |
| GTIN/EAN | 5906301814221 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 48 mm [±1 mm] |
| cone dimension Ø | 18x8.5 mm [±1 mm] |
| Height | 11.5 mm [±1 mm] |
| Weight | 125 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 68.00 kg / 666.85 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 and cons of rare earth magnets.
Benefits
- They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
- They are noted for resistance to demagnetization induced by external magnetic fields,
- In other words, due to the smooth surface of gold, the element looks attractive,
- The surface of neodymium magnets generates a concentrated 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...
- Possibility of custom modeling and adapting to defined requirements,
- Key role in modern industrial fields – they serve a role in magnetic memories, electric drive systems, advanced medical instruments, also technologically advanced constructions.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Limitations
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only secures them against impacts but also increases their durability
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Limited ability of producing threads in the magnet and complex forms - preferred is cover - magnet mounting.
- Health risk related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, small elements of these magnets are able to be problematic in diagnostics medical in case of swallowing.
- Due to complex production process, their price is relatively high,
Lifting parameters
Maximum lifting capacity of the magnet – what it depends on?
- on a base made of mild steel, effectively closing the magnetic flux
- with a thickness no less than 10 mm
- characterized by smoothness
- under conditions of no distance (metal-to-metal)
- during detachment in a direction perpendicular to the plane
- in stable room temperature
Lifting capacity in practice – influencing factors
- Distance (betwixt the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) leads to a reduction in force by up to 50% (this also applies to paint, corrosion or debris).
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Steel thickness – insufficiently thick sheet does not accept the full field, causing part of the flux to be escaped to the other side.
- Steel grade – the best choice is pure iron steel. Stainless steels may have worse magnetic properties.
- Surface finish – full contact is obtained only on polished steel. Rough texture create air cushions, reducing force.
- Temperature – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the holding force is lower. Moreover, even a small distance between the magnet and the plate lowers the load capacity.
Safety rules for work with NdFeB magnets
Protect data
Equipment safety: Strong magnets can ruin payment cards and delicate electronics (heart implants, medical aids, timepieces).
Magnet fragility
Neodymium magnets are sintered ceramics, which means they are prone to chipping. Impact of two magnets leads to them cracking into shards.
Do not drill into magnets
Mechanical processing of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Threat to navigation
Remember: neodymium magnets produce a field that confuses sensitive sensors. Maintain a separation from your phone, device, and navigation systems.
Pinching danger
Big blocks can break fingers in a fraction of a second. Never place your hand between two attracting surfaces.
Do not give to children
Absolutely keep magnets away from children. Choking hazard is significant, and the consequences of magnets connecting inside the body are very dangerous.
Maximum temperature
Avoid heat. NdFeB magnets are sensitive to temperature. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).
Nickel coating and allergies
Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If redness occurs, cease handling magnets and use protective gear.
Health Danger
For implant holders: Strong magnetic fields disrupt electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.
Respect the power
Before use, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.
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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