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
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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Physical properties - 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 |
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Advantages as well as disadvantages of neodymium magnets.
Strengths
- They have unchanged lifting capacity, and over around ten years their performance decreases symbolically – ~1% (in testing),
- Magnets perfectly resist against loss of magnetization caused by foreign field sources,
- The use of an refined coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- They feature high magnetic induction at the operating surface, which increases their power,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures reaching 230°C and above...
- Possibility of detailed shaping as well as optimizing to atypical conditions,
- Wide application in high-tech industry – they find application in mass storage devices, electric drive systems, medical devices, as well as multitasking production systems.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Cons
- They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- Limited ability of producing nuts in the magnet and complicated shapes - preferred is a housing - magnetic holder.
- Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these products are able to complicate diagnosis medical when they are in the body.
- With budget limitations the cost of neodymium magnets can be a barrier,
Holding force characteristics
Maximum lifting capacity of the magnet – what contributes to it?
- on a base made of mild steel, effectively closing the magnetic field
- with a cross-section minimum 10 mm
- with a surface perfectly flat
- under conditions of no distance (surface-to-surface)
- during detachment in a direction perpendicular to the plane
- in neutral thermal conditions
Determinants of practical lifting force of a magnet
- Gap (betwixt the magnet and the metal), as even a very small distance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of nominal force).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Material composition – not every steel attracts identically. High carbon content worsen the attraction effect.
- Smoothness – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
- Heat – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and in frost gain strength (up to a certain limit).
Lifting capacity was assessed with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.
Safe handling of NdFeB magnets
GPS and phone interference
A powerful magnetic field negatively affects the operation of compasses in phones and navigation systems. Keep magnets near a smartphone to avoid damaging the sensors.
Swallowing risk
These products are not suitable for play. Eating multiple magnets can lead to them pinching intestinal walls, which constitutes a critical condition and necessitates urgent medical intervention.
Warning for heart patients
For implant holders: Powerful magnets affect electronics. Maintain minimum 30 cm distance or ask another person to handle the magnets.
Skin irritation risks
Studies show that the nickel plating (the usual finish) is a common allergen. For allergy sufferers, prevent direct skin contact or choose versions in plastic housing.
Keep away from computers
Avoid bringing magnets close to a purse, laptop, or TV. The magnetic field can destroy these devices and erase data from cards.
Eye protection
Despite the nickel coating, the material is brittle and not impact-resistant. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Handling guide
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
Thermal limits
Monitor thermal conditions. Exposing the magnet to high heat will permanently weaken its magnetic structure and pulling force.
Bodily injuries
Large magnets can break fingers instantly. Under no circumstances put your hand betwixt two attracting surfaces.
Dust explosion hazard
Powder created during machining of magnets is combustible. Do not drill into magnets unless you are an expert.
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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