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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Technical parameters - 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 |
Chemical composition
| 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% |
Sustainability
| 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 rare earth magnets.
Strengths
- They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
- They are noted for resistance to demagnetization induced by external disturbances,
- The use of an refined finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Neodymium magnets ensure maximum magnetic induction on a their surface, which increases force concentration,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to modularity in shaping and the capacity to adapt to unusual requirements,
- Fundamental importance in innovative solutions – they find application in mass storage devices, electric drive systems, medical equipment, and technologically advanced constructions.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Limitations
- To avoid cracks under impact, we suggest using special steel housings. Such a solution secures 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, 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 rust. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- We recommend cover - magnetic mount, due to difficulties in creating threads inside the magnet and complicated forms.
- Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which becomes key in the context of child safety. It is also worth noting that tiny parts of these products can disrupt the diagnostic process 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
Magnetic strength at its maximum – what it depends on?
- using a sheet made of high-permeability steel, functioning as a magnetic yoke
- possessing a massiveness of min. 10 mm to ensure full flux closure
- with a plane perfectly flat
- without the slightest clearance between the magnet and steel
- under perpendicular force direction (90-degree angle)
- at ambient temperature approx. 20 degrees Celsius
Practical aspects of lifting capacity – factors
- Clearance – existence of foreign body (paint, dirt, gap) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
- Angle of force application – highest force is reached only during pulling at a 90° angle. The shear force of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
- Steel thickness – too thin plate causes magnetic saturation, causing part of the power to be wasted into the air.
- Chemical composition of the base – low-carbon steel gives the best results. Alloy steels reduce magnetic properties and holding force.
- Base smoothness – the more even the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
- Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently demagnetize the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the holding force.
Safety rules for work with NdFeB magnets
Dust is flammable
Fire warning: Neodymium dust is explosive. Avoid machining magnets in home conditions as this risks ignition.
Handling guide
Handle magnets consciously. Their powerful strength can surprise even professionals. Plan your moves and do not underestimate their force.
Finger safety
Large magnets can break fingers in a fraction of a second. Under no circumstances put your hand between two attracting surfaces.
Cards and drives
Do not bring magnets near a wallet, laptop, or screen. The magnetism can irreversibly ruin these devices and wipe information from cards.
Eye protection
Protect your eyes. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.
Danger to pacemakers
Individuals with a ICD must maintain an absolute distance from magnets. The magnetic field can stop the functioning of the implant.
Heat sensitivity
Watch the temperature. Exposing the magnet to high heat will ruin its properties and pulling force.
Impact on smartphones
Navigation devices and smartphones are extremely susceptible to magnetism. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Product not for children
These products are not intended for children. Swallowing multiple magnets may result in them pinching intestinal walls, which poses a direct threat to life and requires immediate surgery.
Sensitization to coating
A percentage of the population experience a contact allergy to Ni, which is the common plating for neodymium magnets. Prolonged contact might lead to skin redness. We suggest wear safety gloves.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
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Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
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Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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