UMC 75x11/6x18 / N38 - cylindrical magnetic holder
cylindrical magnetic holder
Catalog no 320414
GTIN/EAN: 5906301814702
Diameter
75 mm [±1 mm]
internal diameter Ø
11/6 mm [±1 mm]
Height
18 mm [±1 mm]
Weight
465 g
Load capacity
155.00 kg / 1520.03 N
Coating
[NiCuNi] Nickel
169.86 ZŁ with VAT / pcs + price for transport
138.10 ZŁ net + 23% VAT / pcs
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Detailed specification - UMC 75x11/6x18 / N38 - cylindrical magnetic holder
Specification / characteristics - UMC 75x11/6x18 / N38 - cylindrical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 320414 |
| GTIN/EAN | 5906301814702 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter | 75 mm [±1 mm] |
| internal diameter Ø | 11/6 mm [±1 mm] |
| Height | 18 mm [±1 mm] |
| Weight | 465 g |
| Load capacity ~ ? | 155.00 kg / 1520.03 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 |
Elemental analysis
| 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 |
See also proposals
![HH 16x5.3 [M3] / N38 - through hole magnetic holder](https://cdn3.dhit.pl/graphics/products/hh-16x5.3-m3-sud.jpg "HH 16x5.3 [M3] / N38 - through hole magnetic holder")
Advantages and disadvantages of rare earth magnets.
Pros
- They have constant strength, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
- Magnets effectively defend themselves against demagnetization caused by foreign field sources,
- In other words, due to the aesthetic finish of nickel, the element gains a professional look,
- They feature high magnetic induction at the operating surface, which improves attraction properties,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- In view of the option of accurate molding and customization to individualized requirements, magnetic components can be created in a variety of shapes and sizes, which increases their versatility,
- Fundamental importance in electronics industry – they serve a role in computer drives, brushless drives, advanced medical instruments, as well as other advanced devices.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Weaknesses
- To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- Magnets exposed to a humid environment can rust. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in realizing threads and complicated shapes in magnets, we propose using a housing - magnetic mechanism.
- Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these products can disrupt the diagnostic process medical when they are in the body.
- With large orders the cost of neodymium magnets is economically unviable,
Lifting parameters
Magnetic strength at its maximum – what contributes to it?
- with the use of a yoke made of low-carbon steel, ensuring full magnetic saturation
- whose thickness is min. 10 mm
- with an ground contact surface
- under conditions of no distance (surface-to-surface)
- for force applied at a right angle (pull-off, not shear)
- at conditions approx. 20°C
Determinants of practical lifting force of a magnet
- Gap (between the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Load vector – maximum parameter is obtained only during perpendicular pulling. The force required to slide of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Chemical composition of the base – mild steel gives the best results. Alloy steels decrease magnetic permeability and lifting capacity.
- Surface finish – full contact is obtained only on smooth steel. Rough texture create air cushions, weakening the magnet.
- Thermal environment – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.
Holding force was measured on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the load capacity is reduced by as much as 75%. In addition, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.
Precautions when working with neodymium magnets
Choking Hazard
Absolutely store magnets away from children. Ingestion danger is high, and the consequences of magnets clamping inside the body are very dangerous.
Warning for allergy sufferers
Some people experience a sensitization to Ni, which is the common plating for NdFeB magnets. Extended handling may cause an allergic reaction. It is best to wear safety gloves.
Protective goggles
Despite metallic appearance, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Immense force
Handle magnets with awareness. Their powerful strength can surprise even professionals. Stay alert and respect their force.
Threat to electronics
Avoid bringing magnets close to a purse, computer, or screen. The magnetism can destroy these devices and wipe information from cards.
Dust explosion hazard
Machining of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Medical interference
Warning for patients: Powerful magnets disrupt electronics. Maintain at least 30 cm distance or ask another person to handle the magnets.
GPS and phone interference
A strong magnetic field disrupts the functioning of magnetometers in phones and GPS navigation. Keep magnets near a device to prevent breaking the sensors.
Bodily injuries
Mind your fingers. Two powerful magnets will snap together immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!
Demagnetization risk
Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.
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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