UMS 36x10.5x6.5x8 / N38 - conical magnetic holder
conical magnetic holder
Catalog no 220330
GTIN/EAN: 5906301814207
Diameter Ø
36 mm [±1 mm]
cone dimension Ø
10.5x6.5 mm [±1 mm]
Height
8 mm [±1 mm]
Weight
45 g
Magnetization Direction
↑ axial
Load capacity
29.00 kg / 284.39 N
Coating
[NiCuNi] Nickel
22.94 ZŁ with VAT / pcs + price for transport
18.65 ZŁ net + 23% VAT / pcs
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Detailed specification - UMS 36x10.5x6.5x8 / N38 - conical magnetic holder
Specification / characteristics - UMS 36x10.5x6.5x8 / N38 - conical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 220330 |
| GTIN/EAN | 5906301814207 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 36 mm [±1 mm] |
| cone dimension Ø | 10.5x6.5 mm [±1 mm] |
| Height | 8 mm [±1 mm] |
| Weight | 45 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 29.00 kg / 284.39 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 |
See also products
Advantages and disadvantages of rare earth magnets.
Benefits
- They have constant strength, and over around 10 years their performance decreases symbolically – ~1% (in testing),
- Neodymium magnets are characterized by highly resistant to magnetic field loss caused by external magnetic fields,
- The use of an shiny finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- They feature high magnetic induction at the operating surface, which improves attraction properties,
- Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to freedom in constructing and the capacity to adapt to specific needs,
- Versatile presence in modern industrial fields – they are utilized in HDD drives, electric motors, advanced medical instruments, and technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in miniature devices
Cons
- To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
- 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 and 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. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- We recommend casing - magnetic mechanism, due to difficulties in producing threads inside the magnet and complicated shapes.
- Health risk related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small elements of these devices are able to complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Lifting parameters
Highest magnetic holding force – what contributes to it?
- with the contact of a sheet made of special test steel, ensuring full magnetic saturation
- whose thickness reaches at least 10 mm
- characterized by smoothness
- without any air gap between the magnet and steel
- during pulling in a direction vertical to the plane
- in temp. approx. 20°C
Lifting capacity in real conditions – factors
- Distance – existence of any layer (paint, dirt, gap) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Material type – the best choice is high-permeability steel. Cast iron may generate lower lifting capacity.
- Smoothness – full contact is possible only on smooth steel. Rough texture create air cushions, reducing force.
- Temperature – heating the magnet results in weakening of induction. 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 a perpendicular pulling force, however under shearing force the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate lowers the holding force.
Warnings
Adults only
Neodymium magnets are not intended for children. Swallowing multiple magnets can lead to them connecting inside the digestive tract, which constitutes a critical condition and necessitates urgent medical intervention.
Allergy Warning
Medical facts indicate that the nickel plating (the usual finish) is a potent allergen. If your skin reacts to metals, avoid touching magnets with bare hands and choose versions in plastic housing.
Pinching danger
Large magnets can smash fingers in a fraction of a second. Do not place your hand between two attracting surfaces.
Impact on smartphones
Navigation devices and smartphones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.
Magnets are brittle
Beware of splinters. Magnets can explode upon uncontrolled impact, launching shards into the air. We recommend safety glasses.
Caution required
Exercise caution. Rare earth magnets act from a distance and connect with huge force, often quicker than you can react.
Machining danger
Machining of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Operating temperature
Do not overheat. NdFeB magnets are sensitive to temperature. If you need operation above 80°C, ask us about HT versions (H, SH, UH).
Data carriers
Intense magnetic fields can destroy records on payment cards, HDDs, and storage devices. Stay away of at least 10 cm.
Life threat
Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.
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