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
17.47 ZŁ net + 23% VAT / pcs
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Detailed specification - 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 |
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 as well as cons of neodymium magnets.
Pros
- Their strength is maintained, and after around ten years it decreases only by ~1% (according to research),
- They are extremely resistant to demagnetization induced by external magnetic fields,
- A magnet with a smooth gold surface has an effective appearance,
- Neodymium magnets achieve maximum magnetic induction on a small area, which increases force concentration,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Possibility of accurate forming and modifying to precise requirements,
- Significant place in future technologies – they are used in computer drives, brushless drives, medical equipment, and multitasking production systems.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Weaknesses
- To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Limited ability of making nuts in the magnet and complex forms - preferred is casing - mounting mechanism.
- Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Additionally, tiny parts of these magnets are able to disrupt the diagnostic process medical when they are in the body.
- With budget limitations the cost of neodymium magnets is economically unviable,
Lifting parameters
Maximum lifting force for a neodymium magnet – what affects it?
- with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
- whose transverse dimension is min. 10 mm
- with a plane perfectly flat
- under conditions of gap-free contact (surface-to-surface)
- for force acting at a right angle (in the magnet axis)
- in temp. approx. 20°C
Magnet lifting force in use – key factors
- Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
- Direction of force – highest force is reached only during pulling at a 90° angle. The force required to slide of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Chemical composition of the base – low-carbon steel attracts best. Alloy steels decrease magnetic permeability and lifting capacity.
- Surface finish – ideal contact is possible only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
- Operating temperature – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under parallel forces the holding force is lower. Moreover, even a small distance between the magnet and the plate lowers the lifting capacity.
Safety rules for work with NdFeB magnets
Implant safety
Warning for patients: Powerful magnets affect electronics. Maintain minimum 30 cm distance or request help to work with the magnets.
Protective goggles
Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
Machining danger
Fire warning: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.
Keep away from electronics
Be aware: neodymium magnets generate a field that confuses precision electronics. Keep a safe distance from your phone, tablet, and navigation systems.
Crushing risk
Pinching hazard: The attraction force is so immense that it can result in blood blisters, pinching, and broken bones. Protective gloves are recommended.
Power loss in heat
Regular neodymium magnets (N-type) lose power when the temperature goes above 80°C. This process is irreversible.
Danger to the youngest
Adult use only. Small elements can be swallowed, leading to serious injuries. Store away from children and animals.
Skin irritation risks
Medical facts indicate that nickel (the usual finish) is a common allergen. If your skin reacts to metals, avoid touching magnets with bare hands and select coated magnets.
Electronic hazard
Do not bring magnets close to a wallet, computer, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.
Handling guide
Before starting, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.
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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