![Rubber coated magnetic holder UMGGZ 66x8.5 [M8] GZ / N38](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Rubber coated magnetic holder UMGGZ 66x8.5 [M8] GZ / N38")
![UMGGZ 66x8.5 [M8] GZ / N38 - rubber magnetic holder external thread](https://cdn3.dhit.pl/graphics/products/umggz-66x8.5-m6-gz-gas.jpg)
UMGGZ 66x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
rubber magnetic holder external thread
Catalog no 340423
GTIN/EAN: 5906301814764
Diameter Ø
66 mm [±1 mm]
Height
8.5 mm [±1 mm]
Weight
100 g
Load capacity
18.40 kg / 180.44 N
23.37 ZŁ with VAT / pcs + price for transport
19.00 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Give us a call
+48 22 499 98 98
otherwise let us know through
inquiry form
the contact form page.
Lifting power along with shape of a magnet can be tested on our
power calculator.
Orders placed before 14:00 will be shipped the same business day.
Product card - UMGGZ 66x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
Specification / characteristics - UMGGZ 66x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
| properties | values |
|---|---|
| Cat. no. | 340423 |
| GTIN/EAN | 5906301814764 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 66 mm [±1 mm] |
| Height | 8.5 mm [±1 mm] |
| Weight | 100 g |
| Load capacity ~ ? | 18.40 kg / 180.44 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 |
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 |
View also proposals
![SM 32x275 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-32x275-2xm8-get.jpg "SM 32x275 [2xM8] / N52 - magnetic separator")
![SM 32x225 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-32x225-2xm8-zix.jpg "SM 32x225 [2xM8] / N52 - magnetic separator")
Strengths and weaknesses of rare earth magnets.
Advantages
- They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (according to literature),
- They feature excellent resistance to magnetism drop when exposed to external magnetic sources,
- Thanks to the glossy finish, the layer of Ni-Cu-Ni, gold-plated, or silver gives an aesthetic appearance,
- The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
- Possibility of accurate modeling and adjusting to precise needs,
- Huge importance in high-tech industry – they are commonly used in magnetic memories, brushless drives, precision medical tools, also industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which makes them useful in compact constructions
Cons
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
- Neodymium magnets lose their force 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 stability even at temperatures up to 230°C
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
- Due to limitations in producing threads and complicated forms in magnets, we propose using a housing - magnetic mount.
- Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these devices can be problematic in diagnostics medical after entering the body.
- Due to neodymium price, their price is higher than average,
Holding force characteristics
Maximum lifting capacity of the magnet – what affects it?
- with the application of a sheet made of low-carbon steel, guaranteeing maximum field concentration
- whose transverse dimension equals approx. 10 mm
- with a plane cleaned and smooth
- without any insulating layer between the magnet and steel
- during pulling in a direction perpendicular to the mounting surface
- at temperature room level
Magnet lifting force in use – key factors
- Gap (between the magnet and the plate), since even a microscopic distance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Direction of force – highest force is available only during perpendicular pulling. The resistance to sliding of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
- Steel thickness – too thin plate does not close the flux, causing part of the power to be escaped into the air.
- Steel grade – ideal substrate is high-permeability steel. Hardened steels may have worse magnetic properties.
- Surface quality – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
- Temperature influence – high temperature weakens pulling force. Too high temperature can permanently damage the magnet.
Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under parallel forces the holding force is lower. Moreover, even a small distance between the magnet and the plate decreases the holding force.
Precautions when working with neodymium magnets
Impact on smartphones
Remember: neodymium magnets generate a field that interferes with precision electronics. Keep a separation from your mobile, tablet, and GPS.
Serious injuries
Large magnets can crush fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.
Dust is flammable
Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.
Life threat
Health Alert: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.
Maximum temperature
Keep cool. NdFeB magnets are sensitive to heat. If you need resistance above 80°C, inquire about special high-temperature series (H, SH, UH).
Swallowing risk
Product intended for adults. Tiny parts can be swallowed, leading to severe trauma. Keep away from kids and pets.
Sensitization to coating
Some people experience a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Extended handling can result in dermatitis. We strongly advise wear protective gloves.
Material brittleness
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Caution required
Before starting, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.
Electronic hazard
Avoid bringing magnets near a purse, computer, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.
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