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
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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% |
Environmental data
| 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 neodymium magnets.
Strengths
- They have constant strength, and over around 10 years their attraction force decreases symbolically – ~1% (according to theory),
- Magnets very well resist against demagnetization caused by external fields,
- By covering with a lustrous coating of gold, the element acquires an proper look,
- Magnets are distinguished by extremely high magnetic induction on the surface,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures approaching 230°C and above...
- Considering the ability of flexible shaping and customization to unique requirements, NdFeB magnets can be created in a broad palette of forms and dimensions, which makes them more universal,
- Wide application in high-tech industry – they serve a role in magnetic memories, drive modules, precision medical tools, and modern systems.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Weaknesses
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
- When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength 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
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in creating nuts and complicated shapes in magnets, we recommend using a housing - magnetic mechanism.
- Potential hazard resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. Furthermore, small elements of these devices can disrupt the diagnostic process medical after entering the body.
- Due to expensive raw materials, their price is higher than average,
Lifting parameters
Highest magnetic holding force – what affects it?
- on a plate made of mild steel, effectively closing the magnetic flux
- whose thickness equals approx. 10 mm
- with a surface perfectly flat
- with total lack of distance (without paint)
- during pulling in a direction perpendicular to the mounting surface
- at standard ambient temperature
Practical lifting capacity: influencing factors
- Space between magnet and steel – every millimeter of distance (caused e.g. by varnish or dirt) significantly weakens the magnet efficiency, often by half at just 0.5 mm.
- Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Metal type – different alloys attracts identically. High carbon content weaken the attraction effect.
- Smoothness – full contact is possible only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
- Thermal factor – hot environment reduces pulling force. Too high temperature can permanently damage the magnet.
Lifting capacity was determined using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet and the plate lowers the lifting capacity.
Safe handling of NdFeB magnets
Fire warning
Dust created during grinding of magnets is combustible. Do not drill into magnets unless you are an expert.
Hand protection
Watch your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, crushing everything in their path. Exercise extreme caution!
Electronic devices
Do not bring magnets near a purse, computer, or TV. The magnetic field can destroy these devices and erase data from cards.
Magnets are brittle
Protect your eyes. Magnets can explode upon uncontrolled impact, launching shards into the air. Wear goggles.
Demagnetization risk
Monitor thermal conditions. Heating the magnet to high heat will ruin its properties and pulling force.
Respect the power
Handle magnets consciously. Their powerful strength can shock even experienced users. Plan your moves and do not underestimate their power.
Danger to pacemakers
Health Alert: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.
Sensitization to coating
Some people have a hypersensitivity to Ni, which is the typical protective layer for neodymium magnets. Extended handling might lead to skin redness. We recommend use safety gloves.
No play value
Neodymium magnets are not intended for children. Accidental ingestion of multiple magnets may result in them attracting across intestines, which constitutes a severe health hazard and requires urgent medical intervention.
Phone sensors
An intense magnetic field negatively affects the functioning of compasses in phones and GPS navigation. Maintain magnets near a device to avoid breaking the sensors.
Tabela kosztu i czasu dostawy
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