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
bulk discounts:
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Specifications as well as appearance of a neodymium magnet can be tested with our
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Technical of the product - 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 |
Material specification
| 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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Strengths as well as weaknesses of rare earth magnets.
Pros
- They virtually do not lose power, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
- Magnets very well protect themselves against demagnetization caused by ambient magnetic noise,
- Thanks to the reflective finish, the plating of Ni-Cu-Ni, gold, or silver-plated gives an aesthetic appearance,
- Magnetic induction on the top side of the magnet remains extremely intense,
- 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 free forming and adaptation to custom solutions, NdFeB magnets can be manufactured in a broad palette of geometric configurations, which expands the range of possible applications,
- Fundamental importance in high-tech industry – they serve a role in HDD drives, brushless drives, medical devices, also complex engineering applications.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Cons
- To avoid cracks under impact, we suggest using special steel holders. Such a solution secures the magnet and simultaneously improves its 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 those in rubber or plastics, which secure oxidation as well as corrosion.
- Limited ability of producing nuts in the magnet and complex shapes - recommended is a housing - magnetic holder.
- Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that small components of these products can be problematic in diagnostics medical in case of swallowing.
- 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
Lifting parameters
Maximum magnetic pulling force – what contributes to it?
- with the contact of a sheet made of special test steel, guaranteeing full magnetic saturation
- whose transverse dimension equals approx. 10 mm
- with a surface cleaned and smooth
- under conditions of no distance (metal-to-metal)
- for force acting at a right angle (pull-off, not shear)
- in neutral thermal conditions
Practical lifting capacity: influencing factors
- Gap (betwixt the magnet and the metal), as even a microscopic distance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, rust or debris).
- Pull-off angle – remember that the magnet holds strongest 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 converting into lifting capacity.
- Metal type – different alloys reacts the same. High carbon content worsen the attraction effect.
- Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces reduce efficiency.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).
Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate decreases the load capacity.
Safety rules for work with NdFeB magnets
Hand protection
Danger of trauma: The attraction force is so immense that it can result in blood blisters, crushing, and broken bones. Protective gloves are recommended.
Caution required
Use magnets with awareness. Their huge power can surprise even experienced users. Be vigilant and do not underestimate their power.
Nickel coating and allergies
Certain individuals experience a hypersensitivity to Ni, which is the standard coating for NdFeB magnets. Frequent touching can result in an allergic reaction. We strongly advise wear safety gloves.
Dust explosion hazard
Fire hazard: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this risks ignition.
Magnet fragility
Protect your eyes. Magnets can fracture upon uncontrolled impact, ejecting shards into the air. Wear goggles.
Heat sensitivity
Do not overheat. Neodymium magnets are sensitive to heat. If you need resistance above 80°C, look for special high-temperature series (H, SH, UH).
Keep away from electronics
A powerful magnetic field disrupts the operation of compasses in phones and navigation systems. Keep magnets close to a device to avoid breaking the sensors.
This is not a toy
Adult use only. Small elements can be swallowed, leading to intestinal necrosis. Store out of reach of kids and pets.
Cards and drives
Equipment safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, hearing aids, mechanical watches).
Life threat
Individuals with a pacemaker must keep an large gap from magnets. The magnetic field can interfere with the functioning of the implant.
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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