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 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 |
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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Advantages as well as disadvantages of rare earth magnets.
Advantages
- They have constant strength, and over around ten years their performance decreases symbolically – ~1% (according to theory),
- Magnets perfectly defend themselves against loss of magnetization caused by external fields,
- The use of an refined layer of noble metals (nickel, gold, silver) causes the element to look better,
- The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
- 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 custom shaping as well as optimizing to specific applications,
- Key role in innovative solutions – they are used in magnetic memories, motor assemblies, diagnostic systems, and other advanced devices.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Weaknesses
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a special holder, which not only protects them against impacts but also raises their durability
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- Due to limitations in creating threads and complex shapes in magnets, we propose using a housing - magnetic mount.
- Health risk resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these magnets are able to be problematic in diagnostics medical in case of swallowing.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Detachment force of the magnet in optimal conditions – what affects it?
- with the contact of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
- possessing a massiveness of minimum 10 mm to avoid saturation
- with an ideally smooth contact surface
- without any insulating layer between the magnet and steel
- during detachment in a direction vertical to the plane
- at ambient temperature room level
Lifting capacity in practice – influencing factors
- Gap between surfaces – every millimeter of distance (caused e.g. by varnish or unevenness) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Direction of force – highest force is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
- Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Chemical composition of the base – mild steel gives the best results. Higher carbon content lower magnetic permeability and lifting capacity.
- Plate texture – smooth surfaces ensure maximum contact, which improves force. Uneven metal weaken the grip.
- Temperature – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, in contrast under shearing force the load capacity is reduced by as much as fivefold. Additionally, even a slight gap between the magnet and the plate reduces the holding force.
H&S for magnets
Powerful field
Handle magnets with awareness. Their huge power can surprise even professionals. Stay alert and respect their force.
Allergy Warning
Some people experience a contact allergy to Ni, which is the standard coating for NdFeB magnets. Prolonged contact might lead to a rash. We recommend use protective gloves.
Heat warning
Watch the temperature. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and pulling force.
Fire warning
Machining of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Keep away from computers
Very strong magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.
Hand protection
Danger of trauma: The pulling power is so great that it can cause blood blisters, crushing, and even bone fractures. Use thick gloves.
Pacemakers
For implant holders: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.
Magnets are brittle
Beware of splinters. Magnets can explode upon uncontrolled impact, launching shards into the air. Wear goggles.
Choking Hazard
Neodymium magnets are not toys. Accidental ingestion of a few magnets may result in them attracting across intestines, which constitutes a severe health hazard and necessitates immediate surgery.
GPS Danger
GPS units and mobile phones are extremely sensitive to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
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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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