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UMGB 107x40 [M8+M10] GW F400 +Lina GOBLIN / N38 - goblin magnetic holder
goblin magnetic holder
Catalog no 350438
GTIN/EAN: 5906301814801
Diameter Ø
107 mm [±1 mm]
Height
40 mm [±1 mm]
Weight
2350 g
Magnetization Direction
↑ axial
Load capacity
480.00 kg / 4707.19 N
Coating
[NiCuNi] Nickel
435.24 ZŁ with VAT / pcs + price for transport
353.85 ZŁ net + 23% VAT / pcs
bulk discounts:
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Detailed specification - UMGB 107x40 [M8+M10] GW F400 +Lina GOBLIN / N38 - goblin magnetic holder
Specification / characteristics - UMGB 107x40 [M8+M10] GW F400 +Lina GOBLIN / N38 - goblin magnetic holder
| properties | values |
|---|---|
| Cat. no. | 350438 |
| GTIN/EAN | 5906301814801 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 107 mm [±1 mm] |
| Height | 40 mm [±1 mm] |
| Weight | 2350 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 480.00 kg / 4707.19 N |
| Coating | [NiCuNi] Nickel |
| 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 |
Chemical composition
| 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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Advantages and disadvantages of neodymium magnets.
Benefits
- They virtually do not lose strength, because even after ten years the performance loss is only ~1% (based on calculations),
- They feature excellent resistance to weakening of magnetic properties due to external magnetic sources,
- A magnet with a smooth nickel surface has an effective appearance,
- Magnetic induction on the top side of the magnet remains very high,
- 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...
- Possibility of detailed machining and adapting to complex needs,
- Key role in modern technologies – they are utilized in magnetic memories, electric drive systems, precision medical tools, also other advanced devices.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Cons
- They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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 extremely resistant to heat
- They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Limited possibility of producing nuts in the magnet and complex forms - recommended is a housing - mounting mechanism.
- Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to be problematic in diagnostics medical in case of swallowing.
- With mass production the cost of neodymium magnets is economically unviable,
Holding force characteristics
Magnetic strength at its maximum – what affects it?
- on a plate made of mild steel, effectively closing the magnetic flux
- with a cross-section of at least 10 mm
- with an ground contact surface
- without the slightest insulating layer between the magnet and steel
- for force applied at a right angle (in the magnet axis)
- at ambient temperature approx. 20 degrees Celsius
Impact of factors on magnetic holding capacity in practice
- Clearance – existence of foreign body (paint, dirt, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the maximum value.
- Base massiveness – insufficiently thick sheet does not accept the full field, causing part of the flux to be wasted to the other side.
- Metal type – not every steel attracts identically. Alloy additives worsen the interaction with the magnet.
- Base smoothness – the more even the surface, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Moreover, even a slight gap between the magnet and the plate lowers the load capacity.
Warnings
Fire risk
Powder created during grinding of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.
Keep away from computers
Very strong magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.
Heat sensitivity
Do not overheat. NdFeB magnets are susceptible to temperature. If you need resistance above 80°C, inquire about HT versions (H, SH, UH).
Choking Hazard
NdFeB magnets are not toys. Accidental ingestion of a few magnets can lead to them pinching intestinal walls, which constitutes a direct threat to life and requires urgent medical intervention.
Conscious usage
Handle with care. Neodymium magnets act from a long distance and snap with massive power, often faster than you can move away.
Beware of splinters
Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Wear goggles.
Bodily injuries
Danger of trauma: The pulling power is so immense that it can cause blood blisters, pinching, and broken bones. Protective gloves are recommended.
Warning for heart patients
Health Alert: Strong magnets can deactivate pacemakers and defibrillators. Do not approach if you have medical devices.
Warning for allergy sufferers
Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction happens, immediately stop working with magnets and wear gloves.
Threat to navigation
A strong magnetic field disrupts the operation of compasses in phones and GPS navigation. Maintain magnets close to a smartphone 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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