UMS 42x12.5x6.5x9 / N38 - conical magnetic holder
conical magnetic holder
Catalog no 220331
GTIN/EAN: 5906301814214
Diameter Ø
42 mm [±1 mm]
cone dimension Ø
12.5x6.5 mm [±1 mm]
Height
9 mm [±1 mm]
Weight
72 g
Magnetization Direction
↑ axial
Load capacity
37.00 kg / 362.85 N
Coating
[NiCuNi] Nickel
27.06 ZŁ with VAT / pcs + price for transport
22.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical parameters of the product - UMS 42x12.5x6.5x9 / N38 - conical magnetic holder
Specification / characteristics - UMS 42x12.5x6.5x9 / N38 - conical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 220331 |
| GTIN/EAN | 5906301814214 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 42 mm [±1 mm] |
| cone dimension Ø | 12.5x6.5 mm [±1 mm] |
| Height | 9 mm [±1 mm] |
| Weight | 72 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 37.00 kg / 362.85 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 neodymium magnets.
Advantages
- They have unchanged lifting capacity, and over nearly 10 years their performance decreases symbolically – ~1% (in testing),
- They are resistant to demagnetization induced by external field influence,
- A magnet with a metallic nickel surface has better aesthetics,
- Neodymium magnets generate maximum magnetic induction on a small surface, which ensures high operational effectiveness,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Due to the ability of free molding and customization to individualized requirements, neodymium magnets can be manufactured in a wide range of geometric configurations, which amplifies use scope,
- Key role in high-tech industry – they are commonly used in magnetic memories, motor assemblies, medical equipment, also technologically advanced constructions.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Weaknesses
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
- 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- Due to limitations in realizing nuts and complicated shapes in magnets, we propose using cover - magnetic holder.
- Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. Additionally, tiny parts of these devices can complicate diagnosis medical in case of swallowing.
- Due to neodymium price, their price exceeds standard values,
Holding force characteristics
Maximum magnetic pulling force – what it depends on?
- using a sheet made of low-carbon steel, functioning as a magnetic yoke
- possessing a massiveness of at least 10 mm to avoid saturation
- with a plane free of scratches
- with direct contact (without impurities)
- for force applied at a right angle (in the magnet axis)
- at conditions approx. 20°C
Determinants of lifting force in real conditions
- Distance – the presence of any layer (rust, tape, gap) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
- Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the maximum value.
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
- Metal type – different alloys reacts the same. High carbon content weaken the attraction effect.
- Surface finish – ideal contact is possible only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
- Temperature – heating the magnet results in weakening of force. It is worth remembering the maximum operating temperature for a given model.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as 75%. Moreover, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.
Safety rules for work with neodymium 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.
Health Danger
Warning for patients: Powerful magnets affect medical devices. Keep minimum 30 cm distance or request help to handle the magnets.
Hand protection
Mind your fingers. Two large magnets will join immediately with a force of several hundred kilograms, destroying anything in their path. Be careful!
Protective goggles
Watch out for shards. Magnets can fracture upon violent connection, ejecting sharp fragments into the air. Eye protection is mandatory.
Precision electronics
Navigation devices and mobile phones are highly susceptible to magnetism. Close proximity with a strong magnet can decalibrate the internal compass in your phone.
Heat sensitivity
Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. The loss of strength is permanent.
Immense force
Before use, read the rules. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.
Danger to the youngest
These products are not intended for children. Accidental ingestion of several magnets may result in them attracting across intestines, which constitutes a critical condition and requires immediate surgery.
Allergic reactions
A percentage of the population have a sensitization to Ni, which is the typical protective layer for neodymium magnets. Extended handling may cause a rash. We strongly advise use safety gloves.
Do not drill into magnets
Mechanical processing of NdFeB material poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
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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