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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Technical of the product - 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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
Strengths and weaknesses of Nd2Fe14B magnets.
Pros
- They do not lose strength, even over approximately ten years – the drop in strength is only ~1% (based on measurements),
- They are noted for resistance to demagnetization induced by external disturbances,
- Thanks to the smooth finish, the layer of nickel, gold-plated, or silver gives an visually attractive appearance,
- Magnetic induction on the working layer of the magnet turns out to be maximum,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Possibility of exact shaping and modifying to complex requirements,
- Fundamental importance in high-tech industry – they find application in HDD drives, drive modules, medical equipment, also industrial machines.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Weaknesses
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also increases its resistance to damage
- Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- Due to limitations in creating nuts and complex shapes in magnets, we propose using a housing - magnetic mount.
- Health risk to health – tiny shards of magnets can be dangerous, if swallowed, which becomes key in the aspect of protecting the youngest. Additionally, small components of these magnets can complicate diagnosis medical when they are in the body.
- With mass production the cost of neodymium magnets is economically unviable,
Lifting parameters
Maximum lifting capacity of the magnet – what affects it?
- with the contact of a sheet made of low-carbon steel, guaranteeing maximum field concentration
- whose transverse dimension reaches at least 10 mm
- with an ideally smooth touching surface
- with direct contact (without paint)
- during pulling in a direction perpendicular to the plane
- at standard ambient temperature
Lifting capacity in real conditions – factors
- Clearance – existence of any layer (paint, tape, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (often approx. 20-30% of maximum force).
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Material type – ideal substrate is pure iron steel. Stainless steels may have worse magnetic properties.
- Surface finish – full contact is possible only on polished steel. Rough texture reduce the real contact area, reducing force.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity testing was performed on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under parallel forces the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet and the plate reduces the load capacity.
Warnings
Bone fractures
Protect your hands. Two powerful magnets will snap together immediately with a force of several hundred kilograms, destroying anything in their path. Exercise extreme caution!
Pacemakers
For implant holders: Powerful magnets affect medical devices. Maintain minimum 30 cm distance or request help to handle the magnets.
Danger to the youngest
NdFeB magnets are not suitable for play. Swallowing several magnets can lead to them attracting across intestines, which poses a direct threat to life and necessitates urgent medical intervention.
Warning for allergy sufferers
A percentage of the population experience a contact allergy to Ni, which is the standard coating for neodymium magnets. Prolonged contact can result in an allergic reaction. We suggest wear protective gloves.
Dust is flammable
Machining of neodymium magnets poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Demagnetization risk
Avoid heat. Neodymium magnets are sensitive to temperature. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).
Cards and drives
Device Safety: Strong magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).
Caution required
Handle magnets with awareness. Their powerful strength can surprise even experienced users. Be vigilant and respect their force.
GPS and phone interference
A powerful magnetic field negatively affects the functioning of compasses in smartphones and navigation systems. Keep magnets near a device to prevent damaging the sensors.
Magnet fragility
Watch out for shards. Magnets can explode upon uncontrolled impact, launching shards into the air. We recommend safety glasses.
Tabela kosztu i czasu dostawy
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