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UMGB 67x28 [M8+M10] GW F 120+ Lina GOBLIN / N38 - goblin magnetic holder
goblin magnetic holder
Catalog no 350435
GTIN/EAN: 5906301814771
Diameter Ø
67 mm [±1 mm]
Height
28 mm [±1 mm]
Weight
700 g
Magnetization Direction
↑ axial
Load capacity
180.00 kg / 1765.20 N
Coating
[NiCuNi] Nickel
165.24 ZŁ with VAT / pcs + price for transport
134.34 ZŁ net + 23% VAT / pcs
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Parameters as well as form of a neodymium magnet can be calculated using our
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UMGB 67x28 [M8+M10] GW F 120+ Lina GOBLIN / N38 - goblin magnetic holder
Specification / characteristics UMGB 67x28 [M8+M10] GW F 120+ Lina GOBLIN / N38 - goblin magnetic holder
| properties | values |
|---|---|
| Cat. no. | 350435 |
| GTIN/EAN | 5906301814771 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 67 mm [±1 mm] |
| Height | 28 mm [±1 mm] |
| Weight | 700 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 180.00 kg / 1765.20 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% |
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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Pros as well as cons of Nd2Fe14B magnets.
Strengths
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (according to literature),
- Neodymium magnets are distinguished by exceptionally resistant to loss of magnetic properties caused by external field sources,
- A magnet with a smooth silver surface has an effective appearance,
- Magnetic induction on the top side of the magnet is impressive,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
- Possibility of exact machining as well as optimizing to specific conditions,
- Universal use in high-tech industry – they are used in data components, motor assemblies, precision medical tools, as well as complex engineering applications.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Disadvantages
- Brittleness is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their 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 and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- We recommend casing - magnetic mount, due to difficulties in creating nuts inside the magnet and complex shapes.
- Health risk resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the aspect of protecting the youngest. Additionally, small elements of these magnets are able to complicate diagnosis medical when they are in the body.
- With large orders the cost of neodymium magnets is economically unviable,
Holding force characteristics
Best holding force of the magnet in ideal parameters – what it depends on?
- on a base made of mild steel, optimally conducting the magnetic field
- with a cross-section of at least 10 mm
- characterized by lack of roughness
- without any air gap between the magnet and steel
- during detachment in a direction perpendicular to the plane
- at standard ambient temperature
Determinants of practical lifting force of a magnet
- Gap between magnet and steel – every millimeter of separation (caused e.g. by veneer or dirt) diminishes the pulling force, often by half at just 0.5 mm.
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
- Plate thickness – insufficiently thick plate causes magnetic saturation, causing part of the flux to be lost to the other side.
- Metal type – different alloys reacts the same. Alloy additives weaken the attraction effect.
- Surface finish – full contact is possible only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
- Thermal factor – hot environment weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was measured by applying a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet and the plate decreases the holding force.
Operating temperature
Standard neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.
Beware of splinters
Despite metallic appearance, the material is brittle and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Medical interference
Individuals with a heart stimulator should keep an safe separation from magnets. The magnetism can interfere with the operation of the life-saving device.
Threat to navigation
Note: rare earth magnets generate a field that confuses precision electronics. Maintain a separation from your phone, device, and GPS.
Threat to electronics
Very strong magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Stay away of at least 10 cm.
Allergy Warning
Studies show that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, prevent direct skin contact and choose encased magnets.
Flammability
Combustion risk: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Swallowing risk
Absolutely store magnets out of reach of children. Ingestion danger is high, and the consequences of magnets clamping inside the body are life-threatening.
Handling rules
Exercise caution. Rare earth magnets attract from a distance and connect with huge force, often quicker than you can react.
Crushing force
Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Be careful!
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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