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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Product card - 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 |
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% |
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 neodymium magnets.
Strengths
- Their power is maintained, and after approximately ten years it decreases only by ~1% (theoretically),
- They maintain their magnetic properties even under close interference source,
- Thanks to the shimmering finish, the coating of Ni-Cu-Ni, gold-plated, or silver-plated gives an elegant appearance,
- Neodymium magnets create maximum magnetic induction on a small surface, which increases force concentration,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Due to the possibility of flexible shaping and adaptation to specialized solutions, neodymium magnets can be created in a variety of forms and dimensions, which expands the range of possible applications,
- Universal use in modern technologies – they serve a role in magnetic memories, electric motors, diagnostic systems, as well as multitasking production systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Cons
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- We suggest a housing - magnetic holder, due to difficulties in creating threads inside the magnet and complex forms.
- Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the context of child safety. Furthermore, small components of these products can complicate diagnosis medical when they are in the body.
- With mass production the cost of neodymium magnets can be a barrier,
Pull force analysis
Highest magnetic holding force – what affects it?
- with the use of a yoke made of low-carbon steel, ensuring full magnetic saturation
- with a thickness no less than 10 mm
- with a surface perfectly flat
- without the slightest air gap between the magnet and steel
- for force acting at a right angle (in the magnet axis)
- at room temperature
Magnet lifting force in use – key factors
- Gap (between the magnet and the plate), as even a very small clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to varnish, rust or debris).
- Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Base massiveness – too thin steel causes magnetic saturation, causing part of the flux to be escaped into the air.
- Material composition – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
- Surface quality – the more even the surface, the better the adhesion and stronger the hold. Roughness creates an air distance.
- Temperature influence – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, however under shearing force the holding force is lower. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.
Warnings
Impact on smartphones
Navigation devices and smartphones are extremely sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Operating temperature
Standard neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. The loss of strength is permanent.
Allergic reactions
Medical facts indicate that nickel (the usual finish) is a common allergen. For allergy sufferers, avoid direct skin contact and choose versions in plastic housing.
Cards and drives
Equipment safety: Strong magnets can ruin payment cards and delicate electronics (pacemakers, hearing aids, timepieces).
Do not give to children
Always store magnets away from children. Ingestion danger is high, and the consequences of magnets connecting inside the body are tragic.
ICD Warning
Health Alert: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.
Flammability
Powder generated during cutting of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.
Caution required
Before use, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Be predictive.
Finger safety
Danger of trauma: The attraction force is so great that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.
Eye protection
Despite the nickel coating, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
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14.99 ZŁ
InPost Paczkomaty 24/7
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Płatność przy odbiorze (pobranie):
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Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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