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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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Force as well as appearance of neodymium magnets can be checked on our
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Technical details - 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 |
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% |
Ecology and recycling (GPSR)
| 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.
Pros
- They do not lose power, even during nearly ten years – the decrease in lifting capacity is only ~1% (based on measurements),
- They do not lose their magnetic properties even under external field action,
- The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
- Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
- Due to the ability of flexible molding and customization to unique projects, neodymium magnets can be produced in a variety of geometric configurations, which makes them more universal,
- Key role in modern technologies – they serve a role in HDD drives, electric drive systems, advanced medical instruments, as well as industrial machines.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Limitations
- They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their power 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 those in rubber or plastics, which prevent oxidation and corrosion.
- Due to limitations in realizing nuts and complicated forms in magnets, we propose using casing - magnetic holder.
- Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. Furthermore, tiny parts of these devices are able to complicate diagnosis medical when they are in the body.
- With mass production the cost of neodymium magnets can be a barrier,
Lifting parameters
Magnetic strength at its maximum – what affects it?
- on a plate made of mild steel, perfectly concentrating the magnetic field
- with a thickness minimum 10 mm
- with an ideally smooth contact surface
- without the slightest insulating layer between the magnet and steel
- under axial force vector (90-degree angle)
- in neutral thermal conditions
Practical aspects of lifting capacity – factors
- Distance – the presence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of generating force.
- Material composition – not every steel attracts identically. High carbon content weaken the attraction effect.
- Base smoothness – the more even the plate, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity was assessed using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.
Precautions when working with NdFeB magnets
Cards and drives
Powerful magnetic fields can destroy records on credit cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.
Do not drill into magnets
Dust generated during grinding of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.
Do not overheat magnets
Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will destroy its magnetic structure and strength.
Nickel coating and allergies
Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If skin irritation happens, immediately stop working with magnets and wear gloves.
Bone fractures
Big blocks can break fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.
No play value
Adult use only. Tiny parts pose a choking risk, leading to serious injuries. Keep out of reach of children and animals.
GPS and phone interference
A strong magnetic field interferes with the operation of magnetometers in phones and navigation systems. Maintain magnets near a device to prevent damaging the sensors.
ICD Warning
For implant holders: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or ask another person to handle the magnets.
Handling rules
Before starting, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.
Fragile material
Protect your eyes. Magnets can explode upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.
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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