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UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread
magnetic holder internal thread
Catalog no 180320
GTIN/EAN: 5906301813767
Diameter Ø
42 mm [±1 mm]
Height
20 mm [±1 mm]
Height
9 mm [±1 mm]
Weight
78 g
Load capacity
66.00 kg / 647.24 N
33.95 ZŁ with VAT / pcs + price for transport
27.60 ZŁ net + 23% VAT / pcs
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Technical details - UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread
Specification / characteristics - UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread
| properties | values |
|---|---|
| Cat. no. | 180320 |
| GTIN/EAN | 5906301813767 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 42 mm [±1 mm] |
| Height | 20 mm [±1 mm] |
| Height | 9 mm [±1 mm] |
| Weight | 78 g |
| Load capacity ~ ? | 66.00 kg / 647.24 N |
| 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 |
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Pros as well as cons of Nd2Fe14B magnets.
Strengths
- They retain full power for around 10 years – the drop is just ~1% (according to analyses),
- They have excellent resistance to magnetism drop as a result of opposing magnetic fields,
- By using a decorative coating of gold, the element presents an nice look,
- Magnetic induction on the top side of the magnet remains very high,
- 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...
- Possibility of exact creating and adjusting to individual applications,
- Universal use in high-tech industry – they are used in hard drives, motor assemblies, medical devices, as well as multitasking production systems.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Limitations
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets decrease their strength 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
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Limited possibility of making threads in the magnet and complex shapes - recommended is casing - magnetic holder.
- Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which becomes key in the context of child health protection. Furthermore, small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities
Holding force characteristics
Maximum holding power of the magnet – what contributes to it?
- on a plate made of mild steel, perfectly concentrating the magnetic field
- with a cross-section no less than 10 mm
- characterized by lack of roughness
- without any clearance between the magnet and steel
- during pulling in a direction perpendicular to the mounting surface
- at temperature room level
Determinants of lifting force in real conditions
- Clearance – the presence of foreign body (paint, dirt, air) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
- Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Plate material – mild steel attracts best. Higher carbon content reduce magnetic properties and holding force.
- Surface finish – full contact is obtained only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
- Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was measured by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, however under attempts to slide the magnet the lifting capacity is smaller. In addition, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.
Warnings
Electronic hazard
Powerful magnetic fields can destroy records on payment cards, HDDs, and storage devices. Keep a distance of min. 10 cm.
Swallowing risk
Strictly keep magnets away from children. Risk of swallowing is high, and the effects of magnets clamping inside the body are tragic.
Operating temperature
Control the heat. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.
Pinching danger
Pinching hazard: The pulling power is so immense that it can result in blood blisters, crushing, and broken bones. Protective gloves are recommended.
Powerful field
Exercise caution. Rare earth magnets attract from a long distance and connect with massive power, often quicker than you can move away.
Allergy Warning
Certain individuals suffer from a sensitization to nickel, which is the common plating for NdFeB magnets. Frequent touching might lead to an allergic reaction. It is best to wear protective gloves.
Health Danger
Life threat: Neodymium magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.
GPS Danger
An intense magnetic field interferes with the functioning of compasses in phones and GPS navigation. Maintain magnets near a smartphone to prevent damaging the sensors.
Magnets are brittle
Neodymium magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets will cause them shattering into shards.
Dust explosion hazard
Powder generated during machining of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.
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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