KM HF - 22 kg - magnetic bracket
magnetic bracket
Catalog no 170257
GTIN/EAN: 5906301813699
Weight
593 g
Load capacity
22.00 kg / 215.75 N
29.52 ZŁ with VAT / pcs + price for transport
24.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Weight and appearance of a neodymium magnet can be calculated on our
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Physical properties - KM HF - 22 kg - magnetic bracket
Specification / characteristics - KM HF - 22 kg - magnetic bracket
| properties | values |
|---|---|
| Cat. no. | 170257 |
| GTIN/EAN | 5906301813699 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Weight | 593 g |
| Load capacity ~ ? | 22.00 kg / 215.75 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 |
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Advantages as well as disadvantages of neodymium magnets.
Strengths
- They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
- Magnets effectively resist against loss of magnetization caused by foreign field sources,
- In other words, due to the metallic surface of gold, the element becomes visually attractive,
- The surface of neodymium magnets generates a unique magnetic field – this is a distinguishing feature,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to flexibility in constructing and the capacity to modify to unusual requirements,
- Key role in modern technologies – they are utilized in hard drives, electromotive mechanisms, diagnostic systems, also industrial machines.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Disadvantages
- At very strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in producing nuts and complex forms in magnets, we recommend using cover - magnetic holder.
- Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. It is also worth noting that small components of these devices can complicate diagnosis medical after entering the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Holding force characteristics
Maximum lifting force for a neodymium magnet – what contributes to it?
- using a base made of mild steel, acting as a circuit closing element
- with a thickness minimum 10 mm
- with a surface perfectly flat
- under conditions of no distance (metal-to-metal)
- during pulling in a direction perpendicular to the mounting surface
- at ambient temperature approx. 20 degrees Celsius
Lifting capacity in real conditions – factors
- Gap between surfaces – even a fraction of a millimeter of distance (caused e.g. by varnish or unevenness) diminishes the pulling force, 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.
- Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Steel grade – ideal substrate is pure iron steel. Cast iron may have worse magnetic properties.
- Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Rough surfaces weaken the grip.
- Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under shearing force the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate reduces the holding force.
Warnings
Safe operation
Be careful. Neodymium magnets attract from a distance and snap with huge force, often faster than you can move away.
GPS Danger
Navigation devices and smartphones are highly sensitive to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the sensors in your phone.
Do not overheat magnets
Keep cool. Neodymium magnets are sensitive to temperature. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).
Do not drill into magnets
Fire warning: Neodymium dust is highly flammable. Do not process magnets in home conditions as this may cause fire.
Serious injuries
Large magnets can break fingers instantly. Under no circumstances place your hand between two attracting surfaces.
Avoid contact if allergic
Nickel alert: The Ni-Cu-Ni coating contains nickel. If redness occurs, immediately stop handling magnets and wear gloves.
Medical interference
Warning for patients: Strong magnetic fields disrupt medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.
Electronic devices
Equipment safety: Strong magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).
Risk of cracking
Beware of splinters. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.
Do not give to children
Only for adults. Small elements pose a choking risk, leading to severe trauma. Store away from kids and pets.
Tabela kosztu i czasu dostawy
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Płatność przy odbiorze (pobranie):
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23.00 ZŁ
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