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 of the product - 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Pros as well as cons of neodymium magnets.
Benefits
- They retain attractive force for around ten years – the drop is just ~1% (in theory),
- They have excellent resistance to magnetic field loss when exposed to external fields,
- By covering with a decorative coating of gold, the element acquires an professional look,
- The surface of neodymium magnets generates a maximum magnetic field – this is a key feature,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to modularity in shaping and the ability to customize to unusual requirements,
- Versatile presence in future technologies – they find application in hard drives, electric drive systems, medical equipment, and complex engineering applications.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Disadvantages
- At strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in strength. 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
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
- Limited possibility of making threads in the magnet and complex shapes - recommended is a housing - magnetic holder.
- Potential hazard related to microscopic parts of magnets are risky, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these devices are able to complicate diagnosis medical when they are in the body.
- With budget limitations the cost of neodymium magnets is a challenge,
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what affects it?
- with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
- possessing a massiveness of at least 10 mm to ensure full flux closure
- with a plane cleaned and smooth
- with total lack of distance (without coatings)
- under vertical force vector (90-degree angle)
- in neutral thermal conditions
Impact of factors on magnetic holding capacity in practice
- Clearance – the presence of any layer (rust, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
- Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet limits the attraction force (the magnet "punches through" it).
- Material composition – different alloys reacts the same. High carbon content weaken the interaction with the magnet.
- Surface quality – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
- Temperature – temperature increase causes a temporary drop of induction. Check the thermal limit for a given model.
Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under parallel forces the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.
Safe handling of neodymium magnets
Keep away from children
Always store magnets away from children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are very dangerous.
GPS Danger
An intense magnetic field disrupts the operation of magnetometers in smartphones and navigation systems. Do not bring magnets near a smartphone to avoid breaking the sensors.
Pacemakers
For implant holders: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.
Flammability
Drilling and cutting of neodymium magnets carries a risk of fire risk. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.
Serious injuries
Risk of injury: The pulling power is so immense that it can cause blood blisters, crushing, and broken bones. Use thick gloves.
Magnet fragility
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Nickel allergy
Medical facts indicate that nickel (standard magnet coating) is a potent allergen. If you have an allergy, refrain from touching magnets with bare hands and opt for coated magnets.
Handling guide
Use magnets consciously. Their immense force can shock even professionals. Be vigilant and do not underestimate their power.
Protect data
Do not bring magnets near a purse, computer, or TV. The magnetism can destroy these devices and erase data from cards.
Demagnetization risk
Avoid heat. Neodymium magnets are susceptible to temperature. If you need resistance above 80°C, look for HT versions (H, SH, UH).
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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