KM HF - 34,5 kg - magnetic bracket
magnetic bracket
Catalog no 170258
GTIN/EAN: 5906301813705
Weight
1040 g
Load capacity
34.50 kg / 338.33 N
34.44 ZŁ with VAT / pcs + price for transport
28.00 ZŁ net + 23% VAT / pcs
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Physical properties - KM HF - 34,5 kg - magnetic bracket
Specification / characteristics - KM HF - 34,5 kg - magnetic bracket
| properties | values |
|---|---|
| Cat. no. | 170258 |
| GTIN/EAN | 5906301813705 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 1040 g |
| Load capacity ~ ? | 34.50 kg / 338.33 N |
| Manufacturing Tolerance | ±1 mm |
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 and cons of Nd2Fe14B magnets.
Benefits
- They retain attractive force for almost ten years – the loss is just ~1% (based on simulations),
- They are resistant to demagnetization induced by external field influence,
- By covering with a lustrous coating of nickel, the element gains an proper look,
- Magnetic induction on the surface of the magnet is maximum,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to versatility in constructing and the capacity to modify to complex applications,
- Huge importance in advanced technology sectors – they are used in magnetic memories, motor assemblies, medical devices, also complex engineering applications.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Limitations
- To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 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
- Limited ability of creating nuts in the magnet and complicated shapes - preferred is cover - magnet mounting.
- Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small components of these magnets can disrupt the diagnostic process medical after entering the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Holding force characteristics
Highest magnetic holding force – what affects it?
- on a plate made of structural steel, optimally conducting the magnetic field
- possessing a massiveness of min. 10 mm to ensure full flux closure
- characterized by smoothness
- under conditions of gap-free contact (metal-to-metal)
- during pulling in a direction perpendicular to the mounting surface
- at standard ambient temperature
Lifting capacity in practice – influencing factors
- Distance – existence of foreign body (rust, tape, gap) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
- Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the maximum value.
- Base massiveness – insufficiently thick plate causes magnetic saturation, causing part of the flux to be escaped into the air.
- Plate material – low-carbon steel gives the best results. Alloy steels lower magnetic permeability and lifting capacity.
- Surface finish – full contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
- Thermal factor – high temperature weakens magnetic field. Too high temperature can permanently demagnetize the magnet.
Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate lowers the load capacity.
Safety rules for work with NdFeB magnets
Flammability
Fire warning: Neodymium dust is explosive. Avoid machining magnets in home conditions as this may cause fire.
Physical harm
Danger of trauma: The attraction force is so great that it can result in hematomas, crushing, and broken bones. Protective gloves are recommended.
Do not overheat magnets
Regular neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.
Avoid contact if allergic
Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness appears, immediately stop handling magnets and wear gloves.
Magnetic interference
A strong magnetic field interferes with the operation of magnetometers in phones and navigation systems. Do not bring magnets near a device to prevent breaking the sensors.
Eye protection
Despite metallic appearance, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.
Threat to electronics
Do not bring magnets close to a wallet, laptop, or screen. The magnetic field can destroy these devices and wipe information from cards.
Handling rules
Before starting, read the rules. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.
Warning for heart patients
Life threat: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.
No play value
Product intended for adults. Small elements can be swallowed, causing severe trauma. Store away from kids and pets.
Tabela kosztu i czasu dostawy
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