![Magnet for screw UMGW 42x20x9 [M6] GW / N38](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Magnet for screw UMGW 42x20x9 [M6] GW / N38")
![UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread](https://cdn3.dhit.pl/graphics/products/um-42x20x9-m8-gw-god.jpg)
![UMGW 42x20x9 [M6] GW / N38 - magnetic holder internal thread - ujęcie 2](https://cdn3.dhit.pl/graphics/products/umgw-42x20x9-m8-gw-vam.jpg)
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
bulk discounts:
Need more?
Give us a call
+48 888 99 98 98
otherwise let us know using
inquiry form
through our site.
Lifting power as well as shape of a neodymium magnet can be analyzed with our
modular calculator.
Same-day shipping for orders placed before 14:00.
Product card - 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
![SM 18x225 [2xM5] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-18x225-2xm5-wiv.jpg "SM 18x225 [2xM5] / N42 - magnetic separator")
![UMGGZ 22x6 [M4] GZ / N38 - rubber magnetic holder external thread](https://cdn3.dhit.pl/graphics/products/umg-22x6-m4-gz-hiw.jpg "UMGGZ 22x6 [M4] GZ / N38 - rubber magnetic holder external thread")
Pros as well as cons of neodymium magnets.
Advantages
- They have stable power, and over nearly 10 years their performance decreases symbolically – ~1% (in testing),
- Neodymium magnets are distinguished by remarkably resistant to loss of magnetic properties caused by external magnetic fields,
- In other words, due to the metallic surface of nickel, the element gains visual value,
- Neodymium magnets create maximum magnetic induction on a small surface, which ensures high operational effectiveness,
- Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
- Considering the possibility of free shaping and adaptation to specialized solutions, neodymium magnets can be manufactured in a wide range of forms and dimensions, which makes them more universal,
- Significant place in innovative solutions – they serve a role in data components, drive modules, advanced medical instruments, as well as technologically advanced constructions.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Limitations
- At 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.
- When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
- Due to limitations in producing threads and complex shapes in magnets, we propose using a housing - magnetic holder.
- Possible danger related to microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that tiny parts of these devices are able to complicate diagnosis medical in case of swallowing.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Pull force analysis
Maximum lifting capacity of the magnet – what affects it?
- on a plate made of mild steel, optimally conducting the magnetic flux
- possessing a thickness of minimum 10 mm to ensure full flux closure
- with an ideally smooth touching surface
- with direct contact (without impurities)
- under vertical application of breakaway force (90-degree angle)
- at ambient temperature room level
Impact of factors on magnetic holding capacity in practice
- Distance (betwixt the magnet and the metal), because even a tiny clearance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
- Loading method – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
- Metal type – different alloys attracts identically. Alloy additives worsen the attraction effect.
- Plate texture – smooth surfaces guarantee perfect abutment, which increases field saturation. Uneven metal reduce efficiency.
- Thermal factor – high temperature reduces pulling force. Too high temperature can permanently damage the magnet.
Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate reduces the holding force.
Safety rules for work with neodymium magnets
Eye protection
Protect your eyes. Magnets can fracture upon violent connection, launching shards into the air. We recommend safety glasses.
Crushing risk
Protect your hands. Two large magnets will snap together immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!
Do not give to children
Adult use only. Small elements pose a choking risk, leading to serious injuries. Keep away from children and animals.
Avoid contact if allergic
Some people suffer from a hypersensitivity to Ni, which is the common plating for neodymium magnets. Prolonged contact can result in an allergic reaction. We strongly advise use protective gloves.
Data carriers
Do not bring magnets close to a wallet, computer, or TV. The magnetism can permanently damage these devices and erase data from cards.
Phone sensors
Remember: neodymium magnets generate a field that disrupts sensitive sensors. Keep a separation from your phone, device, and navigation systems.
Heat warning
Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.
Dust explosion hazard
Combustion risk: Neodymium dust is explosive. Avoid machining magnets in home conditions as this risks ignition.
Medical interference
Warning for patients: Powerful magnets disrupt medical devices. Keep at least 30 cm distance or request help to handle the magnets.
Handling guide
Handle magnets consciously. Their huge power can shock even experienced users. Be vigilant and respect their power.
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