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UMGGZ 88x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
rubber magnetic holder external thread
Catalog no 340313
GTIN/EAN: 5906301814757
Diameter Ø
88 mm [±1 mm]
Height
8.5 mm [±1 mm]
Weight
193 g
Load capacity
42.90 kg / 420.71 N
40.59 ZŁ with VAT / pcs + price for transport
33.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Strength along with form of a neodymium magnet can be analyzed on our
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UMGGZ 88x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
Specification / characteristics UMGGZ 88x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
| properties | values |
|---|---|
| Cat. no. | 340313 |
| GTIN/EAN | 5906301814757 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 88 mm [±1 mm] |
| Height | 8.5 mm [±1 mm] |
| Weight | 193 g |
| Load capacity ~ ? | 42.90 kg / 420.71 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% |
Sustainability
| 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 rare earth magnets.
Pros
- They have constant strength, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
- Magnets effectively defend themselves against demagnetization caused by ambient magnetic noise,
- Thanks to the reflective finish, the layer of nickel, gold-plated, or silver gives an modern appearance,
- They are known for high magnetic induction at the operating surface, which increases their power,
- 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...
- Thanks to modularity in designing and the ability to modify to individual projects,
- Huge importance in advanced technology sectors – they are utilized in HDD drives, electric drive systems, precision medical tools, as well as modern systems.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Disadvantages
- At strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
- We suggest casing - magnetic mount, due to difficulties in realizing nuts inside the magnet and complicated shapes.
- Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that small components of these products are able to disrupt the diagnostic process medical after entering the body.
- Due to complex production process, their price is higher than average,
Holding force characteristics
Maximum holding power of the magnet – what affects it?
- with the contact of a yoke made of low-carbon steel, ensuring full magnetic saturation
- with a cross-section minimum 10 mm
- with a surface perfectly flat
- without any insulating layer between the magnet and steel
- during pulling in a direction perpendicular to the plane
- at standard ambient temperature
Determinants of practical lifting force of a magnet
- Distance – the presence of foreign body (paint, dirt, gap) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Direction of force – maximum parameter is reached only during pulling at a 90° angle. The shear force of the magnet along the plate is usually several times smaller (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Chemical composition of the base – mild steel gives the best results. Alloy admixtures decrease magnetic properties and holding force.
- Surface quality – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
- Temperature influence – high temperature reduces magnetic field. Too high temperature can permanently damage the magnet.
Lifting capacity was assessed with the use of a polished steel plate of suitable thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a small distance between the magnet and the plate lowers the holding force.
Allergy Warning
A percentage of the population experience a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Frequent touching can result in dermatitis. We recommend use protective gloves.
Mechanical processing
Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.
Maximum temperature
Avoid heat. NdFeB magnets are susceptible to temperature. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).
Fragile material
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.
Pinching danger
Protect your hands. Two powerful magnets will snap together immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!
Data carriers
Powerful magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.
Compass and GPS
GPS units and mobile phones are highly sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Health Danger
Patients with a heart stimulator should keep an absolute distance from magnets. The magnetic field can interfere with the functioning of the life-saving device.
Conscious usage
Handle magnets with awareness. Their huge power can shock even experienced users. Plan your moves and respect their power.
Keep away from children
Product intended for adults. Small elements can be swallowed, leading to severe trauma. Store out of reach of kids and pets.
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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