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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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Force and structure of a neodymium magnet can be analyzed with our
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Physical properties - 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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Strengths and weaknesses of neodymium magnets.
Benefits
- They do not lose magnetism, even over approximately ten years – the reduction in power is only ~1% (theoretically),
- Neodymium magnets are distinguished by highly resistant to demagnetization caused by external interference,
- The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to look better,
- Neodymium magnets deliver maximum magnetic induction on a small surface, which ensures high operational effectiveness,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- In view of the possibility of free shaping and customization to unique solutions, neodymium magnets can be modeled in a broad palette of shapes and sizes, which makes them more universal,
- Key role in advanced technology sectors – they are used in mass storage devices, electric drive systems, diagnostic systems, also technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in miniature devices
Cons
- To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
- Neodymium magnets lose strength 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
- Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in realizing threads and complex forms in magnets, we propose using casing - magnetic mount.
- Possible danger related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these devices can be problematic in diagnostics medical after entering the body.
- Due to expensive raw materials, their price is relatively high,
Pull force analysis
Best holding force of the magnet in ideal parameters – what affects it?
- with the application of a yoke made of special test steel, guaranteeing full magnetic saturation
- possessing a thickness of at least 10 mm to avoid saturation
- with a plane free of scratches
- with total lack of distance (no coatings)
- under vertical application of breakaway force (90-degree angle)
- in stable room temperature
Determinants of practical lifting force of a magnet
- Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Load vector – maximum parameter is available only during perpendicular pulling. The shear force of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
- Plate thickness – too thin steel does not close the flux, causing part of the flux to be escaped to the other side.
- Plate material – low-carbon steel attracts best. Higher carbon content decrease magnetic permeability and holding force.
- Surface quality – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness creates an air distance.
- Thermal factor – hot environment reduces pulling force. Too high temperature can permanently damage the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a small distance between the magnet and the plate lowers the lifting capacity.
Safe handling of neodymium magnets
Bone fractures
Large magnets can break fingers instantly. Never place your hand betwixt two attracting surfaces.
Warning for heart patients
People with a heart stimulator must maintain an safe separation from magnets. The magnetism can interfere with the operation of the implant.
Dust is flammable
Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this may cause fire.
Risk of cracking
Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.
Compass and GPS
Note: neodymium magnets generate a field that confuses precision electronics. Keep a separation from your phone, tablet, and GPS.
Cards and drives
Intense magnetic fields can destroy records on credit cards, HDDs, and storage devices. Stay away of min. 10 cm.
Nickel allergy
A percentage of the population have a sensitization to nickel, which is the standard coating for neodymium magnets. Frequent touching may cause skin redness. We suggest wear safety gloves.
Danger to the youngest
NdFeB magnets are not toys. Accidental ingestion of several magnets can lead to them attracting across intestines, which constitutes a severe health hazard and requires immediate surgery.
Respect the power
Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Permanent damage
Regular neodymium magnets (N-type) lose power when the temperature surpasses 80°C. This process is irreversible.
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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