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UMH 32x8x46 [M6] / N38 - magnetic holder with hook
magnetic holder with hook
Catalog no 310427
GTIN/EAN: 5906301814566
- Diameter Ø
- 32 mm [±1 mm]
- Height
- 46 mm [±1 mm]
- Height
- 8 mm [±1 mm]
- Weight
- 53 g
- Magnetization Direction
- ↑ axial
- Coating
- [NiCuNi] Nickel
22.14 zł with VAT / pcs + price for transport
18.00 zł net + 23% VAT / pcs
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Technical of the product - UMH 32x8x46 [M6] / N38 - magnetic holder with hook
Specification / characteristics - UMH 32x8x46 [M6] / N38 - magnetic holder with hook
| properties | values |
|---|---|
| Cat. no. | 310427 |
| GTIN/EAN | 5906301814566 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 46 mm [±1 mm] |
| Height | 8 mm [±1 mm] |
| Weight | 53 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 38.00 kg / 372.65 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% |
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 Nd2Fe14B magnets.
Advantages
- They do not lose magnetism, even during approximately ten years – the reduction in lifting capacity is only ~1% (based on measurements),
- Neodymium magnets are extremely resistant to loss of magnetic properties caused by external interference,
- By using a shiny layer of silver, the element gains an nice look,
- The surface of neodymium magnets generates a unique magnetic field – this is a distinguishing feature,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
- Considering the potential of free forming and adaptation to specialized requirements, NdFeB magnets can be modeled in a variety of geometric configurations, which expands the range of possible applications,
- Universal use in modern technologies – they find application in HDD drives, electromotive mechanisms, precision medical tools, as well as multitasking production systems.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which makes them useful in compact constructions
Disadvantages
- At strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- We suggest cover - magnetic mount, due to difficulties in creating threads inside the magnet and complicated forms.
- Health risk resulting from small fragments of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these products are able to be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Holding force characteristics
Maximum lifting capacity of the magnet – what contributes to it?
- with the use of a sheet made of low-carbon steel, guaranteeing maximum field concentration
- whose thickness equals approx. 10 mm
- with a plane cleaned and smooth
- without the slightest air gap between the magnet and steel
- for force acting at a right angle (in the magnet axis)
- at temperature approx. 20 degrees Celsius
Magnet lifting force in use – key factors
- Distance – the presence of any layer (paint, tape, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
- Load vector – highest force is reached only during perpendicular pulling. The shear force of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
- Steel grade – ideal substrate is high-permeability steel. Hardened steels may generate lower lifting capacity.
- Surface structure – the more even the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
- Operating temperature – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).
Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, however under shearing force the load capacity is reduced by as much as 5 times. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.
Warnings
Heat warning
Control the heat. Heating the magnet to high heat will permanently weaken its properties and strength.
Nickel allergy
Allergy Notice: The nickel-copper-nickel coating consists of nickel. If skin irritation happens, immediately stop handling magnets and wear gloves.
Danger to the youngest
These products are not intended for children. Accidental ingestion of multiple magnets can lead to them connecting inside the digestive tract, which poses a severe health hazard and necessitates immediate surgery.
Caution required
Exercise caution. Neodymium magnets attract from a long distance and connect with huge force, often faster than you can react.
Medical implants
Patients with a heart stimulator should keep an absolute distance from magnets. The magnetic field can stop the functioning of the implant.
GPS and phone interference
An intense magnetic field negatively affects the functioning of compasses in smartphones and navigation systems. Keep magnets close to a device to prevent damaging the sensors.
Safe distance
Do not bring magnets near a wallet, laptop, or screen. The magnetism can permanently damage these devices and erase data from cards.
Dust is flammable
Machining of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Pinching danger
Big blocks can crush fingers instantly. Do not put your hand between two strong magnets.
Risk of cracking
Watch out for shards. Magnets can fracture upon violent connection, launching sharp fragments into the air. Eye protection is mandatory.
Tabela kosztu i czasu dostawy
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