UMS 16x6.5x3.5x5 / N38 - conical magnetic holder
conical magnetic holder
Catalog no 220326
GTIN/EAN: 5906301814160
Diameter Ø
16 mm [±1 mm]
cone dimension Ø
6.5x3.5 mm [±1 mm]
Height
5 mm [±1 mm]
Weight
5.5 g
Magnetization Direction
↑ axial
Load capacity
5.00 kg / 49.03 N
Coating
[NiCuNi] Nickel
4.48 ZŁ with VAT / pcs + price for transport
3.64 ZŁ net + 23% VAT / pcs
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Technical details - UMS 16x6.5x3.5x5 / N38 - conical magnetic holder
Specification / characteristics - UMS 16x6.5x3.5x5 / N38 - conical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 220326 |
| GTIN/EAN | 5906301814160 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 16 mm [±1 mm] |
| cone dimension Ø | 6.5x3.5 mm [±1 mm] |
| Height | 5 mm [±1 mm] |
| Weight | 5.5 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 5.00 kg / 49.03 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 |
Material specification
| 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 Nd2Fe14B magnets.
Pros
- They retain magnetic properties for almost ten years – the drop is just ~1% (in theory),
- Neodymium magnets are extremely resistant to magnetic field loss caused by external field sources,
- In other words, due to the glossy surface of silver, the element is aesthetically pleasing,
- Magnetic induction on the working part of the magnet remains extremely intense,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- In view of the option of flexible forming and customization to unique requirements, NdFeB magnets can be produced in a variety of shapes and sizes, which makes them more universal,
- Significant place in modern technologies – they are commonly used in hard drives, brushless drives, medical devices, also multitasking production systems.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Cons
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
- When exposed to high temperature, neodymium magnets suffer 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 rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Due to limitations in producing threads and complicated shapes in magnets, we propose using cover - magnetic holder.
- Possible danger related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. Additionally, small elements of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
- With mass production the cost of neodymium magnets is a challenge,
Pull force analysis
Magnetic strength at its maximum – what contributes to it?
- with the use of a yoke made of special test steel, guaranteeing maximum field concentration
- whose thickness reaches at least 10 mm
- with an polished touching surface
- under conditions of gap-free contact (metal-to-metal)
- during pulling in a direction perpendicular to the mounting surface
- at standard ambient temperature
Determinants of practical lifting force of a magnet
- Air gap (betwixt the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) leads to a drastic drop 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 attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
- Plate thickness – insufficiently thick sheet does not accept the full field, causing part of the power to be escaped to the other side.
- Steel type – low-carbon steel gives the best results. Alloy admixtures lower magnetic properties and lifting capacity.
- Smoothness – ideal contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
- Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet and the plate lowers the lifting capacity.
Precautions when working with NdFeB magnets
Fire warning
Fire hazard: Rare earth powder is explosive. Do not process magnets without safety gear as this may cause fire.
Threat to electronics
Do not bring magnets close to a purse, laptop, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.
Avoid contact if allergic
Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, cease handling magnets and wear gloves.
Caution required
Be careful. Neodymium magnets attract from a distance and connect with massive power, often quicker than you can move away.
Risk of cracking
Neodymium magnets are ceramic materials, meaning they are very brittle. Collision of two magnets will cause them breaking into small pieces.
Keep away from electronics
Remember: rare earth magnets generate a field that confuses precision electronics. Keep a separation from your phone, tablet, and GPS.
Do not give to children
Neodymium magnets are not suitable for play. Accidental ingestion of several magnets can lead to them pinching intestinal walls, which constitutes a direct threat to life and requires immediate surgery.
Finger safety
Danger of trauma: The attraction force is so immense that it can result in hematomas, pinching, and broken bones. Protective gloves are recommended.
Warning for heart patients
Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.
Operating temperature
Monitor thermal conditions. Heating the magnet to high heat will destroy its magnetic structure and pulling force.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
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14.99 ZŁ
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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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