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
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Detailed specification - 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% |
Sustainability
| 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 Nd2Fe14B magnets.
Benefits
- They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (according to literature),
- They show high resistance to demagnetization induced by external field influence,
- In other words, due to the smooth finish of nickel, the element looks attractive,
- They feature high magnetic induction at the operating surface, which increases their power,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Thanks to modularity in forming and the ability to adapt to individual projects,
- Significant place in electronics industry – they are used in mass storage devices, electric motors, diagnostic systems, as well as complex engineering applications.
- 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 special housings. Such protection not only protects the magnet but also increases its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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 extremely resistant to heat
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
- Limited ability of creating threads in the magnet and complex shapes - recommended is cover - magnet mounting.
- Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, 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
Lifting parameters
Optimal lifting capacity of a neodymium magnet – what affects it?
- using a sheet made of mild steel, functioning as a magnetic yoke
- whose transverse dimension reaches at least 10 mm
- with an ground touching surface
- under conditions of ideal adhesion (surface-to-surface)
- during detachment in a direction vertical to the plane
- at room temperature
Magnet lifting force in use – key factors
- Clearance – the presence of any layer (rust, dirt, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
- Direction of force – maximum parameter is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the plate is typically several times lower (approx. 1/5 of the lifting capacity).
- Base massiveness – too thin plate does not close the flux, causing part of the power to be wasted into the air.
- Material composition – not every steel attracts identically. High carbon content worsen the interaction with the magnet.
- Smoothness – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
- Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under parallel forces the holding force is lower. In addition, even a slight gap between the magnet and the plate decreases the load capacity.
Safe handling of neodymium magnets
Serious injuries
Risk of injury: The attraction force is so immense that it can cause hematomas, crushing, and even bone fractures. Use thick gloves.
Pacemakers
Health Alert: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have electronic implants.
Allergic reactions
Some people have a hypersensitivity to nickel, which is the standard coating for neodymium magnets. Frequent touching can result in dermatitis. We strongly advise use protective gloves.
Mechanical processing
Mechanical processing of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Beware of splinters
Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Eye protection is mandatory.
Electronic hazard
Equipment safety: Strong magnets can ruin data carriers and sensitive devices (pacemakers, medical aids, timepieces).
No play value
NdFeB magnets are not suitable for play. Swallowing multiple magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and necessitates urgent medical intervention.
Powerful field
Exercise caution. Neodymium magnets act from a long distance and snap with huge force, often quicker than you can react.
GPS and phone interference
Note: neodymium magnets generate a field that disrupts sensitive sensors. Keep a safe distance from your mobile, device, and navigation systems.
Heat warning
Control the heat. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and strength.
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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