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UMH 60x15x69 [M8] / N38 - magnetic holder with hook
magnetic holder with hook
Catalog no 310431
GTIN/EAN: 5906301814603
Diameter Ø
60 mm [±1 mm]
Height
69 mm [±1 mm]
Height
15 mm [±1 mm]
Weight
300 g
Magnetization Direction
↑ axial
Load capacity
112.00 kg / 1098.34 N
Coating
[NiCuNi] Nickel
143.91 ZŁ with VAT / pcs + price for transport
117.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Strength along with form of a neodymium magnet can be estimated using our
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Technical parameters - UMH 60x15x69 [M8] / N38 - magnetic holder with hook
Specification / characteristics - UMH 60x15x69 [M8] / N38 - magnetic holder with hook
| properties | values |
|---|---|
| Cat. no. | 310431 |
| GTIN/EAN | 5906301814603 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 60 mm [±1 mm] |
| Height | 69 mm [±1 mm] |
| Height | 15 mm [±1 mm] |
| Weight | 300 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 112.00 kg / 1098.34 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% |
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 and cons of Nd2Fe14B magnets.
Advantages
- They retain full power for around ten years – the loss is just ~1% (according to analyses),
- They are resistant to demagnetization induced by external field influence,
- In other words, due to the smooth surface of nickel, the element becomes visually attractive,
- They show high magnetic induction at the operating surface, which affects their effectiveness,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to the possibility of free molding and customization to individualized projects, magnetic components can be created in a variety of geometric configurations, which increases their versatility,
- Versatile presence in modern technologies – they serve a role in HDD drives, electromotive mechanisms, medical devices, as well as modern systems.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Cons
- They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also increases its resistance to damage
- 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
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- Limited possibility of creating threads in the magnet and complicated shapes - recommended is cover - magnetic holder.
- Health risk resulting from small fragments of magnets are risky, in case of ingestion, which gains importance in the context of child safety. It is also worth noting that small components of these products can complicate diagnosis medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Pull force analysis
Magnetic strength at its maximum – what it depends on?
- with the contact of a sheet made of low-carbon steel, ensuring full magnetic saturation
- whose transverse dimension equals approx. 10 mm
- with an ideally smooth contact surface
- without any insulating layer between the magnet and steel
- during pulling 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 varnish or dirt) diminishes the pulling force, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Material type – the best choice is pure iron steel. Stainless steels may attract less.
- Smoothness – ideal contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
- Thermal conditions – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity was assessed by applying a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a slight gap between the magnet’s surface and the plate reduces the holding force.
Precautions when working with NdFeB magnets
Flammability
Machining of neodymium magnets poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Choking Hazard
Always keep magnets out of reach of children. Choking hazard is high, and the effects of magnets clamping inside the body are life-threatening.
Magnets are brittle
NdFeB magnets are ceramic materials, meaning they are very brittle. Impact of two magnets will cause them breaking into small pieces.
Operating temperature
Standard neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. This process is irreversible.
Medical interference
Medical warning: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.
Nickel allergy
It is widely known that nickel (the usual finish) is a strong allergen. If your skin reacts to metals, prevent direct skin contact and opt for coated magnets.
Bodily injuries
Watch your fingers. Two large magnets will join immediately with a force of massive weight, crushing anything in their path. Be careful!
Protect data
Equipment safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, medical aids, timepieces).
Magnetic interference
Navigation devices and mobile phones are highly sensitive to magnetism. Direct contact with a strong magnet can permanently damage the internal compass in your phone.
Immense force
Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
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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