UMC 20x6/3x7 / N38 - cylindrical magnetic holder
cylindrical magnetic holder
Catalog no 320407
GTIN/EAN: 5906301814634
Diameter
20 mm [±1 mm]
internal diameter Ø
6/3 mm [±1 mm]
Height
7 mm [±1 mm]
Weight
12 g
Load capacity
6.00 kg / 58.84 N
Coating
[NiCuNi] Nickel
6.99 ZŁ with VAT / pcs + price for transport
5.68 ZŁ net + 23% VAT / pcs
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Product card - UMC 20x6/3x7 / N38 - cylindrical magnetic holder
Specification / characteristics - UMC 20x6/3x7 / N38 - cylindrical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 320407 |
| GTIN/EAN | 5906301814634 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter | 20 mm [±1 mm] |
| internal diameter Ø | 6/3 mm [±1 mm] |
| Height | 7 mm [±1 mm] |
| Weight | 12 g |
| Load capacity ~ ? | 6.00 kg / 58.84 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 |
Other proposals
Advantages and disadvantages of Nd2Fe14B magnets.
Strengths
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
- Magnets effectively protect themselves against demagnetization caused by external fields,
- By applying a decorative coating of silver, the element acquires an aesthetic look,
- The surface of neodymium magnets generates a intense magnetic field – this is a key feature,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to flexibility in forming and the ability to modify to unusual requirements,
- Fundamental importance in future technologies – they serve a role in data components, electric drive systems, medical equipment, as well as modern systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in compact constructions
Weaknesses
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields 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 and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 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 resistant to moisture, in case of application outdoors
- Limited possibility of producing threads in the magnet and complex shapes - recommended is casing - magnetic holder.
- Potential hazard related to microscopic parts of magnets can be dangerous, in case of ingestion, which gains importance in the context of child safety. Additionally, tiny parts of these magnets are able to disrupt the diagnostic process medical after entering the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities
Pull force analysis
Maximum holding power of the magnet – what affects it?
- using a base made of mild steel, acting as a circuit closing element
- possessing a thickness of at least 10 mm to ensure full flux closure
- characterized by smoothness
- under conditions of no distance (metal-to-metal)
- during detachment in a direction vertical to the mounting surface
- in temp. approx. 20°C
Practical aspects of lifting capacity – factors
- Distance (betwixt the magnet and the plate), since even a tiny distance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Load vector – maximum parameter is available only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually many times lower (approx. 1/5 of the lifting capacity).
- Base massiveness – insufficiently thick sheet does not close the flux, causing part of the flux to be wasted to the other side.
- Steel type – low-carbon steel attracts best. Alloy steels decrease magnetic properties and lifting capacity.
- Surface condition – ground elements ensure maximum contact, which increases field saturation. Rough surfaces weaken the grip.
- Thermal environment – temperature increase results in weakening of force. Check the maximum operating temperature for a given model.
Lifting capacity testing was conducted on plates with a smooth surface of optimal thickness, under perpendicular forces, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.
Precautions when working with NdFeB magnets
Powerful field
Use magnets consciously. Their immense force can surprise even experienced users. Be vigilant and do not underestimate their force.
Maximum temperature
Avoid heat. NdFeB magnets are sensitive to temperature. If you need operation above 80°C, look for special high-temperature series (H, SH, UH).
Threat to electronics
Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (heart implants, hearing aids, timepieces).
Fire risk
Powder created during grinding of magnets is flammable. Do not drill into magnets unless you are an expert.
Eye protection
NdFeB magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets will cause them cracking into shards.
Physical harm
Risk of injury: The attraction force is so immense that it can result in blood blisters, crushing, and broken bones. Protective gloves are recommended.
Danger to pacemakers
Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have medical devices.
Keep away from electronics
Remember: neodymium magnets produce a field that disrupts precision electronics. Maintain a safe distance from your mobile, tablet, and navigation systems.
Do not give to children
Product intended for adults. Tiny parts can be swallowed, leading to severe trauma. Store away from children and animals.
Sensitization to coating
It is widely known that nickel (standard magnet coating) is a potent allergen. If you have an allergy, avoid direct skin contact and opt for versions in plastic housing.
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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