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UMGB 75x28 [M8+M10] GW F200 +Lina GOBLIN / N38 - goblin magnetic holder
goblin magnetic holder
Catalog no 350436
GTIN/EAN: 5906301814788
Diameter Ø
75 mm [±1 mm]
Height
28 mm [±1 mm]
Weight
900 g
Magnetization Direction
↑ axial
Load capacity
280.00 kg / 2745.86 N
Coating
[NiCuNi] Nickel
215.00 ZŁ with VAT / pcs + price for transport
174.80 ZŁ net + 23% VAT / pcs
bulk discounts:
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Weight and appearance of neodymium magnets can be checked using our
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Technical specification of the product - UMGB 75x28 [M8+M10] GW F200 +Lina GOBLIN / N38 - goblin magnetic holder
Specification / characteristics - UMGB 75x28 [M8+M10] GW F200 +Lina GOBLIN / N38 - goblin magnetic holder
| properties | values |
|---|---|
| Cat. no. | 350436 |
| GTIN/EAN | 5906301814788 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 75 mm [±1 mm] |
| Height | 28 mm [±1 mm] |
| Weight | 900 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 280.00 kg / 2745.86 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 |
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% |
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 retain attractive force for nearly ten years – the drop is just ~1% (based on simulations),
- Magnets effectively protect themselves against loss of magnetization caused by ambient magnetic noise,
- In other words, due to the glossy finish of silver, the element looks attractive,
- They show high magnetic induction at the operating surface, which increases their power,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Considering the potential of flexible shaping and adaptation to individualized projects, magnetic components can be modeled in a variety of geometric configurations, which amplifies use scope,
- Huge importance in future technologies – they serve a role in mass storage devices, drive modules, medical equipment, as well as multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which enables their usage in small systems
Disadvantages
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a steel housing, which not only protects them against impacts but also increases their durability
- Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Due to limitations in realizing threads and complex forms in magnets, we propose using cover - magnetic mount.
- Possible danger related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that small components of these devices can complicate diagnosis medical after entering the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Holding force characteristics
Maximum holding power of the magnet – what affects it?
- using a base made of mild steel, acting as a magnetic yoke
- with a cross-section minimum 10 mm
- with a plane free of scratches
- with direct contact (without paint)
- for force acting at a right angle (pull-off, not shear)
- in stable room temperature
Lifting capacity in real conditions – factors
- Clearance – the presence of any layer (paint, tape, air) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
- Load vector – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly many times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Metal type – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
- Surface structure – the more even the plate, the better the adhesion and stronger the hold. Unevenness creates an air distance.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).
Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate decreases the holding force.
Safety rules for work with NdFeB magnets
Handling guide
Exercise caution. Rare earth magnets act from a long distance and snap with massive power, often faster than you can move away.
Finger safety
Watch your fingers. Two powerful magnets will snap together instantly with a force of massive weight, destroying everything in their path. Be careful!
Demagnetization risk
Regular neodymium magnets (grade N) lose power when the temperature exceeds 80°C. This process is irreversible.
No play value
Always keep magnets out of reach of children. Choking hazard is high, and the consequences of magnets connecting inside the body are fatal.
Cards and drives
Powerful magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.
Warning for allergy sufferers
It is widely known that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, prevent touching magnets with bare hands and opt for encased magnets.
Impact on smartphones
Navigation devices and smartphones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.
Magnets are brittle
Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. Eye protection is mandatory.
Danger to pacemakers
Warning for patients: Powerful magnets affect electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.
Fire risk
Dust generated during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.
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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