UMN 410x44x15 / N52 - knife holder
knife holder
Catalog no 200455
GTIN/EAN: 5906301813897
length
410 mm [±1 mm]
Width
44 mm [±1 mm]
Height
15 mm [±1 mm]
Weight
837 g
Load capacity
5.00 kg / 49.03 N
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Technical data - UMN 410x44x15 / N52 - knife holder
Specification / characteristics - UMN 410x44x15 / N52 - knife holder
| properties | values |
|---|---|
| Cat. no. | 200455 |
| GTIN/EAN | 5906301813897 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| length | 410 mm [±1 mm] |
| Width | 44 mm [±1 mm] |
| Height | 15 mm [±1 mm] |
| Weight | 837 g |
| Load capacity ~ ? | 5.00 kg / 49.03 N |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N52
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 14.2-14.7 | kGs |
| remenance Br [min. - max.] ? | 1420-1470 | mT |
| coercivity bHc ? | 10.8-12.5 | kOe |
| coercivity bHc ? | 860-995 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 48-53 | BH max MGOe |
| energy density [min. - max.] ? | 380-422 | 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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Pros and cons of rare earth magnets.
Benefits
- Their strength remains stable, and after around ten years it drops only by ~1% (theoretically),
- Neodymium magnets remain extremely resistant to demagnetization caused by external field sources,
- A magnet with a shiny gold surface is more attractive,
- Magnets are distinguished by very high magnetic induction on the outer side,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures approaching 230°C and above...
- Possibility of individual creating and adapting to complex conditions,
- Fundamental importance in modern technologies – they are utilized in HDD drives, electric motors, medical devices, and other advanced devices.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Cons
- Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only protects them against impacts but also raises their durability
- When exposed to high temperature, neodymium magnets experience a drop in power. 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
- Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Limited ability of making nuts in the magnet and complicated shapes - preferred is casing - magnetic holder.
- Health risk related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these devices can complicate diagnosis medical after entering the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities
Holding force characteristics
Maximum holding power of the magnet – what it depends on?
- using a base made of mild steel, serving as a ideal flux conductor
- possessing a thickness of at least 10 mm to ensure full flux closure
- with an polished contact surface
- without the slightest clearance between the magnet and steel
- under vertical application of breakaway force (90-degree angle)
- at temperature room level
What influences lifting capacity in practice
- Gap (betwixt the magnet and the plate), since even a microscopic clearance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to varnish, rust or dirt).
- Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Plate thickness – insufficiently thick sheet does not close the flux, causing part of the power to be escaped to the other side.
- Plate material – mild steel attracts best. Higher carbon content decrease magnetic properties and lifting capacity.
- Surface finish – ideal contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
- Thermal environment – heating the magnet causes a temporary drop of force. Check the thermal limit for a given model.
Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the load capacity.
Warnings
Physical harm
Pinching hazard: The pulling power is so immense that it can result in blood blisters, crushing, and even bone fractures. Use thick gloves.
Allergy Warning
Certain individuals have a hypersensitivity to Ni, which is the standard coating for NdFeB magnets. Extended handling might lead to a rash. We suggest use safety gloves.
Threat to navigation
GPS units and smartphones are extremely susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Health Danger
For implant holders: Strong magnetic fields affect electronics. Keep minimum 30 cm distance or request help to work with the magnets.
Danger to the youngest
Always store magnets away from children. Choking hazard is high, and the effects of magnets connecting inside the body are very dangerous.
Protect data
Data protection: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, timepieces).
Do not underestimate power
Before use, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Be predictive.
Maximum temperature
Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. Damage is permanent.
Shattering risk
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Combustion hazard
Drilling and cutting of neodymium magnets poses a fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
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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