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UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread
magnetic holder rubber internal thread
Catalog no 160309
GTIN/EAN: 5906301813675
Diameter Ø
88 mm [±1 mm]
Height
8.5 mm [±1 mm]
Weight
186 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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Technical - UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread
Specification / characteristics - UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread
| properties | values |
|---|---|
| Cat. no. | 160309 |
| GTIN/EAN | 5906301813675 |
| 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 | 186 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 |
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 |
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Pros and cons of Nd2Fe14B magnets.
Advantages
- They retain attractive force for nearly ten years – the drop is just ~1% (according to analyses),
- They do not lose their magnetic properties even under strong external field,
- A magnet with a metallic silver surface is more attractive,
- Neodymium magnets deliver maximum magnetic induction on a small surface, which increases force concentration,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to modularity in forming and the capacity to adapt to unusual requirements,
- Versatile presence in advanced technology sectors – they serve a role in data components, motor assemblies, precision medical tools, also multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in small systems
Limitations
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Due to limitations in realizing threads and complicated forms in magnets, we recommend using cover - magnetic mount.
- Health risk resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these magnets are able to disrupt the diagnostic process medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Pull force analysis
Maximum holding power of the magnet – what affects it?
- with the use of a sheet made of special test steel, guaranteeing full magnetic saturation
- whose thickness equals approx. 10 mm
- characterized by smoothness
- with total lack of distance (no coatings)
- during pulling in a direction perpendicular to the mounting surface
- at temperature room level
Practical lifting capacity: influencing factors
- Distance – existence of any layer (rust, tape, gap) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
- Loading method – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Steel type – mild steel attracts best. Alloy steels reduce magnetic properties and holding force.
- Surface structure – the more even the surface, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
- Temperature – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.
Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet and the plate decreases the load capacity.
Precautions when working with NdFeB magnets
Handling guide
Handle with care. Neodymium magnets attract from a distance and snap with massive power, often faster than you can move away.
Danger to the youngest
Neodymium magnets are not intended for children. Swallowing a few magnets can lead to them pinching intestinal walls, which poses a critical condition and requires urgent medical intervention.
Medical interference
For implant holders: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or ask another person to handle the magnets.
Demagnetization risk
Regular neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.
Crushing risk
Mind your fingers. Two powerful magnets will join instantly with a force of massive weight, crushing anything in their path. Be careful!
Shattering risk
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
Electronic hazard
Data protection: Strong magnets can ruin payment cards and delicate electronics (heart implants, medical aids, mechanical watches).
Dust is flammable
Mechanical processing of NdFeB material poses a fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Metal Allergy
It is widely known that nickel (standard magnet coating) is a potent allergen. For allergy sufferers, prevent touching magnets with bare hands and select versions in plastic housing.
GPS and phone interference
Be aware: neodymium magnets produce a field that confuses sensitive sensors. Maintain a safe distance from your mobile, tablet, and GPS.
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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