KM HF - 11,3 kg - magnetic bracket
magnetic bracket
Catalog no 170256
GTIN/EAN: 5906301813682
Weight
304 g
Load capacity
11.30 kg / 110.82 N
24.60 ZŁ with VAT / pcs + price for transport
20.00 ZŁ net + 23% VAT / pcs
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KM HF - 11,3 kg - magnetic bracket
Specification / characteristics KM HF - 11,3 kg - magnetic bracket
| properties | values |
|---|---|
| Cat. no. | 170256 |
| GTIN/EAN | 5906301813682 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 304 g |
| Load capacity ~ ? | 11.30 kg / 110.82 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 |
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% |
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 neodymium magnets.
Advantages
- They retain magnetic properties for nearly 10 years – the drop is just ~1% (in theory),
- Magnets very well protect themselves against loss of magnetization caused by external fields,
- The use of an elegant layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Neodymium magnets achieve maximum magnetic induction on a contact point, which ensures high operational effectiveness,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- In view of the possibility of precise molding and customization to specialized projects, NdFeB magnets can be produced in a wide range of shapes and sizes, which increases their versatility,
- Fundamental importance in high-tech industry – they serve a role in data components, motor assemblies, medical devices, also industrial machines.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Weaknesses
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
- We recommend a housing - magnetic holder, due to difficulties in realizing threads inside the magnet and complex forms.
- Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that small components of these magnets are able to be problematic in diagnostics medical when they are in the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Pull force analysis
Maximum lifting force for a neodymium magnet – what it depends on?
- on a block made of structural steel, optimally conducting the magnetic field
- possessing a massiveness of at least 10 mm to ensure full flux closure
- characterized by lack of roughness
- without any clearance between the magnet and steel
- for force acting at a right angle (in the magnet axis)
- in temp. approx. 20°C
Practical aspects of lifting capacity – factors
- Clearance – existence of any layer (paint, dirt, gap) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
- Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
- Material composition – not every steel reacts the same. High carbon content weaken the attraction effect.
- Surface quality – the smoother and more polished the plate, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
- Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.
Lifting capacity was assessed using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, however under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.
Magnetic media
Equipment safety: Neodymium magnets can ruin payment cards and sensitive devices (heart implants, medical aids, mechanical watches).
Respect the power
Handle with care. Rare earth magnets act from a distance and snap with massive power, often faster than you can move away.
Nickel allergy
Studies show that nickel (the usual finish) is a common allergen. For allergy sufferers, avoid direct skin contact or choose encased magnets.
Fire risk
Drilling and cutting of neodymium magnets carries a risk of fire hazard. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.
Thermal limits
Regular neodymium magnets (grade N) lose power when the temperature goes above 80°C. This process is irreversible.
GPS Danger
Remember: rare earth magnets generate a field that disrupts precision electronics. Maintain a safe distance from your mobile, tablet, and navigation systems.
Eye protection
Neodymium magnets are ceramic materials, meaning they are very brittle. Impact of two magnets will cause them cracking into shards.
Hand protection
Risk of injury: The attraction force is so great that it can cause hematomas, crushing, and even bone fractures. Use thick gloves.
Warning for heart patients
Warning for patients: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or request help to work with the magnets.
Choking Hazard
Adult use only. Tiny parts can be swallowed, causing intestinal necrosis. Store out of reach of kids and pets.
Tabela kosztu i czasu dostawy
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