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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
bulk discounts:
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Physical properties - 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 |
Elemental analysis
| 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 |
Other proposals
Strengths as well as weaknesses of neodymium magnets.
Strengths
- They do not lose magnetism, even over approximately 10 years – the reduction in strength is only ~1% (theoretically),
- They maintain their magnetic properties even under external field action,
- The use of an metallic layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Magnetic induction on the working part of the magnet remains very high,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
- In view of the potential of precise forming and customization to specialized solutions, NdFeB magnets can be created in a variety of forms and dimensions, which expands the range of possible applications,
- Huge importance in high-tech industry – they serve a role in mass storage devices, drive modules, precision medical tools, also modern systems.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Disadvantages
- They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
- When exposed to high temperature, neodymium magnets suffer 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
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material protecting against moisture
- We recommend cover - magnetic holder, due to difficulties in producing nuts inside the magnet and complex shapes.
- Health risk to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these devices are able to complicate diagnosis medical in case of swallowing.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities
Lifting parameters
Maximum lifting force for a neodymium magnet – what affects it?
- on a base made of mild steel, effectively closing the magnetic flux
- possessing a thickness of minimum 10 mm to avoid saturation
- characterized by lack of roughness
- with zero gap (without impurities)
- during pulling in a direction perpendicular to the mounting surface
- in stable room temperature
Magnet lifting force in use – key factors
- Distance – the presence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
- Direction of force – maximum parameter is obtained only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly several times lower (approx. 1/5 of the lifting capacity).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
- Steel type – low-carbon steel gives the best results. Higher carbon content lower magnetic properties and holding force.
- Surface finish – full contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).
Lifting capacity testing was carried out on a smooth plate of suitable thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Additionally, even a minimal clearance between the magnet and the plate decreases the holding force.
Precautions when working with neodymium magnets
Warning for allergy sufferers
Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, immediately stop handling magnets and use protective gear.
Flammability
Dust generated during cutting of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.
Magnet fragility
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.
Operating temperature
Control the heat. Exposing the magnet to high heat will destroy its magnetic structure and pulling force.
ICD Warning
Health Alert: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.
Protect data
Intense magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.
Handling guide
Before use, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Be predictive.
Product not for children
Absolutely store magnets away from children. Choking hazard is high, and the effects of magnets connecting inside the body are fatal.
Pinching danger
Pinching hazard: The pulling power is so great that it can result in blood blisters, pinching, and even bone fractures. Protective gloves are recommended.
GPS and phone interference
An intense magnetic field interferes with the operation of compasses in smartphones and navigation systems. Maintain magnets near a device to prevent 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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