UMC 36x6/4X8 / N38 - cylindrical magnetic holder
cylindrical magnetic holder
Catalog no 320410
GTIN/EAN: 5906301814665
Diameter
36 mm [±1 mm]
internal diameter Ø
6/4 mm [±1 mm]
Height
8 mm [±1 mm]
Weight
45 g
Load capacity
29.00 kg / 284.39 N
Coating
[NiCuNi] Nickel
21.49 ZŁ with VAT / pcs + price for transport
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Technical data - UMC 36x6/4X8 / N38 - cylindrical magnetic holder
Specification / characteristics - UMC 36x6/4X8 / N38 - cylindrical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 320410 |
| GTIN/EAN | 5906301814665 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter | 36 mm [±1 mm] |
| internal diameter Ø | 6/4 mm [±1 mm] |
| Height | 8 mm [±1 mm] |
| Weight | 45 g |
| Load capacity ~ ? | 29.00 kg / 284.39 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 |
Other products
Advantages and disadvantages of Nd2Fe14B magnets.
Strengths
- They do not lose strength, even after nearly ten years – the drop in power is only ~1% (theoretically),
- They possess excellent resistance to magnetic field loss due to external magnetic sources,
- The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Magnets possess very high magnetic induction on the outer layer,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Due to the option of accurate shaping and adaptation to unique projects, magnetic components can be created in a variety of geometric configurations, which increases their versatility,
- Universal use in electronics industry – they find application in HDD drives, drive modules, precision medical tools, and other advanced devices.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Weaknesses
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
- Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- We suggest a housing - magnetic mount, due to difficulties in producing nuts inside the magnet and complicated forms.
- Health risk related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these magnets are able to be problematic in diagnostics medical after entering the body.
- With budget limitations the cost of neodymium magnets is economically unviable,
Holding force characteristics
Magnetic strength at its maximum – what it depends on?
- using a base made of high-permeability steel, serving as a magnetic yoke
- whose thickness reaches at least 10 mm
- with a plane free of scratches
- without any clearance between the magnet and steel
- for force acting at a right angle (in the magnet axis)
- at conditions approx. 20°C
Determinants of lifting force in real conditions
- Clearance – the presence of foreign body (rust, tape, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
- Angle of force application – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
- Base massiveness – too thin steel does not accept the full field, causing part of the power to be escaped into the air.
- Material type – the best choice is high-permeability steel. Hardened steels may generate lower lifting capacity.
- Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Rough surfaces reduce efficiency.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).
Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate lowers the lifting capacity.
Warnings
Warning for heart patients
Warning for patients: Powerful magnets disrupt medical devices. Keep at least 30 cm distance or request help to work with the magnets.
Fire warning
Machining of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Keep away from computers
Very strong magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Keep a distance of at least 10 cm.
Pinching danger
Risk of injury: The attraction force is so immense that it can cause blood blisters, pinching, and even bone fractures. Use thick gloves.
Allergy Warning
A percentage of the population suffer from a contact allergy to Ni, which is the standard coating for neodymium magnets. Extended handling might lead to an allergic reaction. We strongly advise use protective gloves.
Risk of cracking
Despite metallic appearance, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.
Heat sensitivity
Avoid heat. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, look for HT versions (H, SH, UH).
Handling rules
Be careful. Neodymium magnets act from a distance and snap with huge force, often quicker than you can react.
Danger to the youngest
Absolutely keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are very dangerous.
Magnetic interference
An intense magnetic field disrupts the operation of compasses in phones and GPS navigation. Do not bring magnets close to a device to avoid damaging the sensors.
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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