![Magnet for screw UMGW 36x18x8 [M8] GW / N38](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Magnet for screw UMGW 36x18x8 [M8] GW / N38")
![UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread](https://cdn3.dhit.pl/graphics/products/um-36x18x8-m8-gw-foj.jpg)
![UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread - ujęcie 2](https://cdn3.dhit.pl/graphics/products/umgw-36x18x8-m8-gw-fif.jpg)
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:
Need more?
Call us
+48 22 499 98 98
alternatively get in touch using
form
the contact form page.
Specifications and structure of magnetic components can be reviewed on our
online calculation tool.
Orders placed before 14:00 will be shipped the same business day.
Physical properties - 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 |
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 |
Other proposals
Advantages as well as disadvantages of rare earth magnets.
Advantages
- They do not lose strength, even during approximately ten years – the reduction in lifting capacity is only ~1% (based on measurements),
- Magnets perfectly protect themselves against demagnetization caused by external fields,
- A magnet with a smooth nickel surface has better aesthetics,
- They feature high magnetic induction at the operating surface, making them more effective,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Possibility of individual creating as well as adjusting to individual requirements,
- Huge importance in modern industrial fields – they find application in HDD drives, motor assemblies, medical equipment, also modern systems.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Cons
- They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
- Neodymium magnets lose their power 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
- 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, when using outdoors
- Limited possibility of creating nuts in the magnet and complex forms - preferred is a housing - magnetic holder.
- Health risk resulting from small fragments of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Additionally, small elements of these devices are able to disrupt the diagnostic process medical after entering the body.
- With mass production the cost of neodymium magnets is economically unviable,
Lifting parameters
Maximum magnetic pulling force – what it depends on?
- with the use of a yoke made of special test steel, guaranteeing full magnetic saturation
- possessing a massiveness of minimum 10 mm to ensure full flux closure
- with an polished touching surface
- without any insulating layer between the magnet and steel
- during pulling in a direction vertical to the mounting surface
- at ambient temperature room level
Determinants of lifting force in real conditions
- Distance (betwixt the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to varnish, rust or dirt).
- Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
- Plate thickness – too thin sheet does not close the flux, causing part of the power to be lost into the air.
- Metal type – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
- Smoothness – full contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).
Lifting capacity was determined using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, whereas under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate reduces the holding force.
Safety rules for work with neodymium magnets
Impact on smartphones
GPS units and smartphones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can ruin the sensors in your phone.
Physical harm
Danger of trauma: The attraction force is so great that it can result in hematomas, crushing, and even bone fractures. Protective gloves are recommended.
Threat to electronics
Very strong magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Stay away of at least 10 cm.
Respect the power
Before use, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.
Shattering risk
Neodymium magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets leads to them shattering into small pieces.
Life threat
Warning for patients: Strong magnetic fields disrupt medical devices. Maintain at least 30 cm distance or ask another person to handle the magnets.
Combustion hazard
Drilling and cutting of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Nickel allergy
Studies show that nickel (the usual finish) is a potent allergen. If your skin reacts to metals, prevent direct skin contact or choose versions in plastic housing.
Danger to the youngest
Absolutely keep magnets away from children. Risk of swallowing is high, and the effects of magnets clamping inside the body are fatal.
Permanent damage
Standard neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. The loss of strength 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
Rate the product
Your rating