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 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% |
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 neodymium magnets.
Advantages
- Their power is maintained, and after around 10 years it decreases only by ~1% (according to research),
- They maintain their magnetic properties even under strong external field,
- The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to look better,
- Neodymium magnets generate maximum magnetic induction on a contact point, which allows for strong attraction,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Possibility of custom modeling and adapting to precise applications,
- Versatile presence in modern technologies – they serve a role in hard drives, electric drive systems, medical devices, as well as other advanced devices.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems
Disadvantages
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Due to limitations in realizing nuts and complex forms in magnets, we recommend using casing - magnetic holder.
- Potential hazard related to microscopic parts of magnets can be dangerous, if swallowed, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these magnets can be problematic in diagnostics medical after entering the body.
- With mass production the cost of neodymium magnets is economically unviable,
Lifting parameters
Breakaway strength of the magnet in ideal conditions – what affects it?
- using a sheet made of low-carbon steel, functioning as a magnetic yoke
- with a thickness no less than 10 mm
- with a plane perfectly flat
- under conditions of ideal adhesion (metal-to-metal)
- during pulling in a direction perpendicular to the mounting surface
- in neutral thermal conditions
Practical lifting capacity: influencing factors
- Distance (between the magnet and the plate), as even a tiny clearance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits much less (typically approx. 20-30% of maximum force).
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
- Steel grade – the best choice is pure iron steel. Stainless steels may attract less.
- Surface quality – the more even the plate, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
- Temperature – temperature increase results in weakening of force. It is worth remembering the maximum operating temperature for a given model.
Lifting capacity was determined by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under parallel forces the lifting capacity is smaller. In addition, even a minimal clearance between the magnet and the plate reduces the lifting capacity.
Warnings
Medical interference
Patients with a ICD must keep an large gap from magnets. The magnetic field can disrupt the operation of the implant.
Thermal limits
Watch the temperature. Heating the magnet to high heat will destroy its magnetic structure and pulling force.
Allergic reactions
A percentage of the population experience a sensitization to nickel, which is the common plating for neodymium magnets. Prolonged contact might lead to dermatitis. We suggest wear protective gloves.
Threat to navigation
An intense magnetic field interferes with the operation of compasses in smartphones and navigation systems. Do not bring magnets close to a device to avoid breaking the sensors.
Fire risk
Combustion risk: Neodymium dust is highly flammable. Do not process magnets without safety gear as this may cause fire.
Material brittleness
Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets leads to them shattering into small pieces.
Handling rules
Handle with care. Neodymium magnets attract from a long distance and snap with massive power, often faster than you can react.
No play value
Adult use only. Small elements pose a choking risk, leading to intestinal necrosis. Store away from kids and pets.
Crushing risk
Risk of injury: The attraction force is so great that it can cause blood blisters, pinching, and broken bones. Use thick gloves.
Keep away from computers
Do not bring magnets close to a wallet, laptop, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.
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
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12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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