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UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread
magnetic holder internal thread
Catalog no 180319
GTIN/EAN: 5906301813750
Diameter Ø
36 mm [±1 mm]
Height
18 mm [±1 mm]
Height
8 mm [±1 mm]
Weight
52 g
Load capacity
40.00 kg / 392.27 N
23.99 ZŁ with VAT / pcs + price for transport
19.50 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical details - UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread
Specification / characteristics - UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread
| properties | values |
|---|---|
| Cat. no. | 180319 |
| GTIN/EAN | 5906301813750 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 36 mm [±1 mm] |
| Height | 18 mm [±1 mm] |
| Height | 8 mm [±1 mm] |
| Weight | 52 g |
| Load capacity ~ ? | 40.00 kg / 392.27 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 |
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% |
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 and cons of neodymium magnets.
Strengths
- Their magnetic field remains stable, and after around ten years it decreases only by ~1% (according to research),
- They have excellent resistance to magnetic field loss as a result of external magnetic sources,
- By covering with a smooth layer of silver, the element acquires an elegant look,
- The surface of neodymium magnets generates a intense magnetic field – this is a distinguishing 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...
- Possibility of accurate modeling and adjusting to precise needs,
- Wide application in advanced technology sectors – they serve a role in computer drives, motor assemblies, medical devices, as well as complex engineering applications.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Disadvantages
- At very strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets lose their strength 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
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
- We recommend cover - magnetic mount, due to difficulties in producing nuts inside the magnet and complicated forms.
- Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the context of child health protection. Additionally, tiny parts of these products can disrupt the diagnostic process medical after entering the body.
- Due to neodymium price, their price is relatively high,
Holding force characteristics
Best holding force of the magnet in ideal parameters – what affects it?
- on a base made of structural steel, effectively closing the magnetic field
- possessing a massiveness of minimum 10 mm to avoid saturation
- characterized by lack of roughness
- without the slightest insulating layer between the magnet and steel
- for force acting at a right angle (in the magnet axis)
- at conditions approx. 20°C
Lifting capacity in real conditions – factors
- Distance (betwixt the magnet and the metal), as even a very small distance (e.g. 0.5 mm) results in a drastic drop in force by up to 50% (this also applies to varnish, rust or debris).
- Load vector – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
- Plate thickness – insufficiently thick sheet causes magnetic saturation, causing part of the flux to be lost to the other side.
- Metal type – different alloys attracts identically. High carbon content weaken the attraction effect.
- Base smoothness – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
- Temperature – heating the magnet causes a temporary drop of induction. Check the thermal limit for a given model.
Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.
Safe handling of neodymium magnets
Danger to pacemakers
Warning for patients: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.
Machining danger
Drilling and cutting of NdFeB material poses a fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Hand protection
Large magnets can break fingers in a fraction of a second. Never place your hand between two strong magnets.
GPS Danger
A strong magnetic field interferes with the functioning of compasses in phones and navigation systems. Do not bring magnets near a device to prevent breaking the sensors.
Choking Hazard
Adult use only. Tiny parts pose a choking risk, causing severe trauma. Keep out of reach of children and animals.
Immense force
Exercise caution. Rare earth magnets act from a long distance and snap with massive power, often faster than you can react.
Magnet fragility
NdFeB magnets are sintered ceramics, which means they are fragile like glass. Impact of two magnets will cause them breaking into small pieces.
Allergy Warning
Medical facts indicate that the nickel plating (standard magnet coating) is a potent allergen. If your skin reacts to metals, prevent touching magnets with bare hands and select coated magnets.
Safe distance
Device Safety: Strong magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, timepieces).
Do not overheat magnets
Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will ruin its properties and strength.
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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