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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 |
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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths as well as weaknesses of Nd2Fe14B magnets.
Strengths
- They retain full power for nearly 10 years – the drop is just ~1% (according to analyses),
- Magnets effectively defend themselves against demagnetization caused by external fields,
- A magnet with a shiny nickel surface has an effective appearance,
- The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of accurate modeling and adapting to specific needs,
- Wide application in innovative solutions – they serve a role in hard drives, brushless drives, medical devices, as well as technologically advanced constructions.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Weaknesses
- To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
- When exposed to high temperature, neodymium magnets experience 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 usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
- Limited ability of making nuts in the magnet and complex shapes - recommended is a housing - magnetic holder.
- Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. Additionally, small elements of these devices can be problematic in diagnostics 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
Pull force analysis
Maximum holding power of the magnet – what contributes to it?
- using a plate made of mild steel, acting as a circuit closing element
- possessing a thickness of min. 10 mm to ensure full flux closure
- characterized by even structure
- under conditions of gap-free contact (metal-to-metal)
- under axial force vector (90-degree angle)
- in neutral thermal conditions
Lifting capacity in real conditions – factors
- Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
- Load vector – maximum parameter is available only during perpendicular pulling. The force required to slide of the magnet along the plate is usually several times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
- Steel grade – ideal substrate is pure iron steel. Stainless steels may attract less.
- Base smoothness – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
- Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.
Warnings
Operating temperature
Avoid heat. Neodymium magnets are susceptible to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).
Keep away from children
Product intended for adults. Small elements can be swallowed, leading to serious injuries. Store out of reach of children and animals.
Mechanical processing
Fire warning: Rare earth powder is explosive. Avoid machining magnets without safety gear as this may cause fire.
Compass and GPS
A strong magnetic field negatively affects the functioning of magnetometers in smartphones and navigation systems. Keep magnets near a smartphone to avoid breaking the sensors.
Safe operation
Handle magnets with awareness. Their huge power can surprise even professionals. Be vigilant and respect their force.
Magnet fragility
Despite the nickel coating, neodymium is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Health Danger
Medical warning: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.
Cards and drives
Avoid bringing magnets near a purse, computer, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.
Metal Allergy
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, immediately stop handling magnets and wear gloves.
Bodily injuries
Protect your hands. Two large magnets will snap together instantly with a force of massive weight, crushing everything in their path. Exercise extreme caution!
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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14.99 ZŁ
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Płatność przy odbiorze (pobranie):
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Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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