UMS 48x18x8.5x11.5 / N38 - conical magnetic holder
conical magnetic holder
Catalog no 220403
GTIN/EAN: 5906301814221
Diameter Ø
48 mm [±1 mm]
cone dimension Ø
18x8.5 mm [±1 mm]
Height
11.5 mm [±1 mm]
Weight
125 g
Magnetization Direction
↑ axial
Load capacity
68.00 kg / 666.85 N
Coating
[NiCuNi] Nickel
44.92 ZŁ with VAT / pcs + price for transport
36.52 ZŁ net + 23% VAT / pcs
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Technical parameters of the product - UMS 48x18x8.5x11.5 / N38 - conical magnetic holder
Specification / characteristics - UMS 48x18x8.5x11.5 / N38 - conical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 220403 |
| GTIN/EAN | 5906301814221 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 48 mm [±1 mm] |
| cone dimension Ø | 18x8.5 mm [±1 mm] |
| Height | 11.5 mm [±1 mm] |
| Weight | 125 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 68.00 kg / 666.85 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 |
Elemental analysis
| 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 |
Other deals
Pros and cons of rare earth magnets.
Benefits
- They have stable power, and over nearly ten years their performance decreases symbolically – ~1% (according to theory),
- Magnets effectively defend themselves against demagnetization caused by foreign field sources,
- Thanks to the elegant finish, the layer of Ni-Cu-Ni, gold-plated, or silver gives an modern appearance,
- They are known for high magnetic induction at the operating surface, which increases their power,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
- Possibility of precise shaping as well as adapting to defined applications,
- Fundamental importance in innovative solutions – they serve a role in hard drives, electromotive mechanisms, precision medical tools, also other advanced devices.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in compact constructions
Disadvantages
- At strong impacts they can break, therefore we recommend placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets decrease their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Due to limitations in producing threads and complex forms in magnets, we propose using casing - magnetic mount.
- Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. Furthermore, small components of these magnets are able to 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
Lifting parameters
Maximum holding power of the magnet – what affects it?
- on a plate made of structural steel, perfectly concentrating the magnetic field
- whose thickness equals approx. 10 mm
- characterized by even structure
- under conditions of gap-free contact (surface-to-surface)
- for force applied at a right angle (in the magnet axis)
- at conditions approx. 20°C
Lifting capacity in real conditions – factors
- Gap between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Force direction – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
- Metal type – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
- Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Rough surfaces reduce efficiency.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).
Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. Moreover, even a slight gap between the magnet’s surface and the plate reduces the holding force.
Warnings
Data carriers
Intense magnetic fields can corrupt files on credit cards, hard drives, and storage devices. Stay away of min. 10 cm.
Bone fractures
Protect your hands. Two large magnets will join immediately with a force of several hundred kilograms, crushing anything in their path. Exercise extreme caution!
Pacemakers
Health Alert: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have electronic implants.
Do not underestimate power
Use magnets consciously. Their huge power can surprise even experienced users. Be vigilant and respect their force.
Allergic reactions
Certain individuals have a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Prolonged contact might lead to a rash. We strongly advise use safety gloves.
Demagnetization risk
Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.
Fire warning
Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.
Product not for children
Neodymium magnets are not intended for children. Accidental ingestion of multiple magnets may result in them attracting across intestines, which poses a severe health hazard and requires urgent medical intervention.
GPS and phone interference
Navigation devices and smartphones are highly sensitive to magnetism. Close proximity with a strong magnet can ruin the sensors in your phone.
Beware of splinters
Despite the nickel coating, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.
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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