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 details - 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 |
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% |
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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![UMH 48x11x65 [M6] / N38 - magnetic holder with hook](https://cdn3.dhit.pl/graphics/products/umh-48x11x65-m6-wiw.jpg "UMH 48x11x65 [M6] / N38 - magnetic holder with hook")
Pros and cons of rare earth magnets.
Strengths
- Their strength is maintained, and after approximately 10 years it decreases only by ~1% (according to research),
- They show high resistance to demagnetization induced by external disturbances,
- The use of an shiny layer of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Neodymium magnets generate maximum magnetic induction on a small area, which ensures high operational effectiveness,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Considering the ability of precise shaping and customization to custom requirements, magnetic components can be produced in a wide range of shapes and sizes, which makes them more universal,
- Huge importance in modern industrial fields – they are utilized in data components, motor assemblies, precision medical tools, and modern systems.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Limitations
- At strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
- We recommend cover - magnetic mount, due to difficulties in producing threads inside the magnet and complex shapes.
- Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small elements of these magnets can be problematic in diagnostics medical when they are in the body.
- With mass production the cost of neodymium magnets can be a barrier,
Holding force characteristics
Maximum magnetic pulling force – what contributes to it?
- using a sheet made of high-permeability steel, serving as a ideal flux conductor
- whose transverse dimension equals approx. 10 mm
- characterized by lack of roughness
- without the slightest air gap between the magnet and steel
- during detachment in a direction perpendicular to the plane
- at temperature room level
Magnet lifting force in use – key factors
- Distance – existence of any layer (paint, dirt, gap) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
- Force direction – declared lifting capacity refers to pulling vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of nominal force).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Metal type – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
- Surface structure – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
- Temperature influence – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the holding force.
H&S for magnets
Mechanical processing
Powder produced during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.
Serious injuries
Big blocks can break fingers in a fraction of a second. Do not place your hand betwixt two strong magnets.
Magnetic interference
An intense magnetic field interferes with the functioning of compasses in smartphones and GPS navigation. Maintain magnets close to a smartphone to avoid damaging the sensors.
Data carriers
Powerful magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Keep a distance of at least 10 cm.
No play value
Product intended for adults. Small elements pose a choking risk, leading to serious injuries. Store out of reach of children and animals.
Nickel coating and allergies
Studies show that the nickel plating (the usual finish) is a common allergen. If your skin reacts to metals, avoid direct skin contact or opt for coated magnets.
Do not underestimate power
Handle magnets consciously. Their immense force can surprise even professionals. Be vigilant and respect their force.
Do not overheat magnets
Regular neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. This process is irreversible.
Material brittleness
NdFeB magnets are sintered ceramics, meaning they are fragile like glass. Clashing of two magnets leads to them breaking into small pieces.
Medical interference
Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.
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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