NCM 40x13.5x5 / N38 - channel magnetic holder
channel magnetic holder
Catalog no 360489
GTIN/EAN: 5906301814887
Diameter Ø
40 mm [±1 mm]
Height
13.5 mm [±1 mm]
Weight
18.4 g
Magnetization Direction
↑ axial
Load capacity
17.00 kg / 166.71 N
Coating
[NiCuNi] Nickel
14.19 ZŁ with VAT / pcs + price for transport
11.54 ZŁ net + 23% VAT / pcs
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Physical properties - NCM 40x13.5x5 / N38 - channel magnetic holder
Specification / characteristics - NCM 40x13.5x5 / N38 - channel magnetic holder
| properties | values |
|---|---|
| Cat. no. | 360489 |
| GTIN/EAN | 5906301814887 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 40 mm [±1 mm] |
| Height | 13.5 mm [±1 mm] |
| Weight | 18.4 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 17.00 kg / 166.71 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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![HH 25x7.7 [M5] / N38 - through hole magnetic holder](https://cdn3.dhit.pl/graphics/products/hh-25x7.7-m5-pov.jpg "HH 25x7.7 [M5] / N38 - through hole magnetic holder")
Strengths as well as weaknesses of neodymium magnets.
Benefits
- Their magnetic field is durable, and after approximately 10 years it drops only by ~1% (according to research),
- They do not lose their magnetic properties even under strong external field,
- A magnet with a shiny silver surface has better aesthetics,
- Magnets possess extremely high magnetic induction on the outer side,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
- In view of the ability of accurate shaping and adaptation to specialized requirements, neodymium magnets can be created in a variety of geometric configurations, which increases their versatility,
- Wide application in electronics industry – they are commonly used in computer drives, electromotive mechanisms, precision medical tools, and technologically advanced constructions.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Disadvantages
- At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Limited possibility of creating threads in the magnet and complicated shapes - recommended is a housing - magnetic holder.
- Potential hazard to health – tiny shards of magnets are risky, if swallowed, which becomes key in the context of child safety. Additionally, small components of these products are able to be problematic in diagnostics medical in case of swallowing.
- With large orders the cost of neodymium magnets is economically unviable,
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what affects it?
- using a base made of high-permeability steel, functioning as a ideal flux conductor
- with a thickness no less than 10 mm
- with an ideally smooth touching surface
- under conditions of no distance (metal-to-metal)
- under axial force vector (90-degree angle)
- in stable room temperature
Impact of factors on magnetic holding capacity in practice
- Space between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of nominal force).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Steel grade – the best choice is pure iron steel. Stainless steels may generate lower lifting capacity.
- Smoothness – full contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity testing was carried out on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet and the plate lowers the load capacity.
Safe handling of NdFeB magnets
Magnets are brittle
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.
Threat to electronics
Avoid bringing magnets near a purse, laptop, or screen. The magnetism can destroy these devices and wipe information from cards.
Choking Hazard
Product intended for adults. Small elements can be swallowed, causing serious injuries. Store away from kids and pets.
ICD Warning
Life threat: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.
Demagnetization risk
Watch the temperature. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and pulling force.
Fire warning
Mechanical processing of NdFeB material poses a fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Magnetic interference
A powerful magnetic field interferes with the operation of compasses in smartphones and GPS navigation. Do not bring magnets near a device to prevent damaging the sensors.
Sensitization to coating
Medical facts indicate that nickel (standard magnet coating) is a common allergen. If you have an allergy, avoid direct skin contact and choose coated magnets.
Powerful field
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Think ahead.
Pinching danger
Large magnets can smash fingers instantly. Do not place your hand betwixt two attracting surfaces.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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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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