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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
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Product card - 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% |
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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Strengths and weaknesses of Nd2Fe14B magnets.
Strengths
- They do not lose strength, even during nearly ten years – the drop in lifting capacity is only ~1% (based on measurements),
- Magnets perfectly defend themselves against loss of magnetization caused by foreign field sources,
- A magnet with a metallic silver surface has better aesthetics,
- Neodymium magnets generate maximum magnetic induction on a small area, which ensures high operational effectiveness,
- 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...
- In view of the possibility of flexible molding and adaptation to specialized solutions, neodymium magnets can be produced in a wide range of geometric configurations, which makes them more universal,
- Versatile presence in advanced technology sectors – they are utilized in mass storage devices, electromotive mechanisms, advanced medical instruments, and industrial machines.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Cons
- To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 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 secure oxidation as well as corrosion.
- Due to limitations in producing nuts and complicated shapes in magnets, we recommend using casing - magnetic holder.
- Health risk resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these products are able to complicate diagnosis medical when they are in the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Maximum holding power of the magnet – what it depends on?
- on a plate made of mild steel, perfectly concentrating the magnetic flux
- possessing a thickness of min. 10 mm to avoid saturation
- with a plane perfectly flat
- without the slightest insulating layer between the magnet and steel
- during pulling in a direction vertical to the mounting surface
- at temperature approx. 20 degrees Celsius
Lifting capacity in practice – influencing factors
- Distance – existence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
- Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits much less (typically approx. 20-30% of maximum force).
- Base massiveness – too thin plate causes magnetic saturation, causing part of the flux to be wasted to the other side.
- Chemical composition of the base – low-carbon steel gives the best results. Alloy admixtures decrease magnetic permeability and holding force.
- Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
- Thermal factor – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.
Holding force was tested on the plate surface of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.
Warnings
Do not drill into magnets
Combustion risk: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Implant safety
For implant holders: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.
Demagnetization risk
Standard neodymium magnets (grade N) lose power when the temperature goes above 80°C. This process is irreversible.
Crushing force
Danger of trauma: The pulling power is so great that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.
Allergy Warning
Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If an allergic reaction happens, cease handling magnets and use protective gear.
Adults only
Only for adults. Small elements pose a choking risk, leading to intestinal necrosis. Keep away from kids and pets.
Handling rules
Use magnets with awareness. Their powerful strength can surprise even professionals. Be vigilant and do not underestimate their force.
Fragile material
Neodymium magnets are sintered ceramics, which means they are fragile like glass. Collision of two magnets will cause them cracking into small pieces.
Data carriers
Device Safety: Strong magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, timepieces).
Impact on smartphones
An intense magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Maintain magnets close to a device to avoid damaging the sensors.
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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