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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Detailed specification - 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 |
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 |
Other products
Pros as well as cons of rare earth magnets.
Pros
- They retain attractive force for nearly 10 years – the loss is just ~1% (according to analyses),
- They have excellent resistance to magnetism drop due to opposing magnetic fields,
- In other words, due to the smooth layer of nickel, the element becomes visually attractive,
- Magnets are characterized by extremely high magnetic induction on the outer layer,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures approaching 230°C and above...
- Thanks to the possibility of accurate shaping and adaptation to unique projects, neodymium magnets can be modeled in a broad palette of geometric configurations, which expands the range of possible applications,
- Versatile presence in high-tech industry – they serve a role in HDD drives, electric motors, precision medical tools, also modern systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Weaknesses
- Brittleness is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a special holder, which not only secures them against impacts but also increases their durability
- When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as 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 those in rubber or plastics, which secure oxidation and corrosion.
- Limited possibility of creating nuts in the magnet and complicated forms - recommended is cover - magnet mounting.
- Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, 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 can limit application in large quantities
Lifting parameters
Best holding force of the magnet in ideal parameters – what affects it?
- on a plate made of mild steel, perfectly concentrating the magnetic field
- with a thickness of at least 10 mm
- with a plane cleaned and smooth
- with zero gap (no impurities)
- for force acting at a right angle (pull-off, not shear)
- at ambient temperature approx. 20 degrees Celsius
Magnet lifting force in use – key factors
- Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of generating force.
- Material composition – different alloys reacts the same. High carbon content weaken the attraction effect.
- Surface condition – ground elements guarantee perfect abutment, which improves force. Uneven metal weaken the grip.
- Temperature – heating the magnet causes a temporary drop of induction. Check the maximum operating temperature for a given model.
Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate lowers the load capacity.
Safe handling of neodymium magnets
Skin irritation risks
Nickel alert: The nickel-copper-nickel coating consists of nickel. If redness occurs, immediately stop handling magnets and use protective gear.
Danger to pacemakers
People with a pacemaker have to maintain an safe separation from magnets. The magnetism can interfere with the functioning of the implant.
Threat to navigation
A powerful magnetic field interferes with the functioning of compasses in smartphones and navigation systems. Do not bring magnets close to a smartphone to avoid breaking the sensors.
Caution required
Exercise caution. Neodymium magnets attract from a long distance and connect with huge force, often quicker than you can move away.
Electronic devices
Device Safety: Neodymium magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, timepieces).
Operating temperature
Control the heat. Exposing the magnet to high heat will ruin its properties and strength.
Fire risk
Fire warning: Neodymium dust is explosive. Do not process magnets without safety gear as this risks ignition.
Finger safety
Danger of trauma: The attraction force is so immense that it can cause hematomas, crushing, and broken bones. Protective gloves are recommended.
Fragile material
NdFeB magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets leads to them breaking into shards.
Danger to the youngest
Always keep magnets away from children. Ingestion danger is high, and the effects of magnets clamping inside the body are tragic.
Tabela kosztu i czasu dostawy
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