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SM 25x300 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130295
GTIN/EAN: 5906301812883
Diameter Ø
25 mm [±1 mm]
Height
300 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 6 500 Gauss [±5%]
836.40 ZŁ with VAT / pcs + price for transport
680.00 ZŁ net + 23% VAT / pcs
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Physical properties SM 25x300 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x300 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130295 |
| GTIN/EAN | 5906301812883 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 300 mm [±1 mm] |
| Weight | 0.01 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 11 poles |
| Casing Tube Thickness | 1 mm |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N42
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 12.9-13.2 | kGs |
| remenance Br [min. - max.] ? | 1290-1320 | mT |
| coercivity bHc ? | 10.8-12.0 | kOe |
| coercivity bHc ? | 860-955 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 40-42 | BH max MGOe |
| energy density [min. - max.] ? | 318-334 | BH max KJ/m |
| max. temperature ? | ≤ 80 | °C |
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 deals
Strengths as well as weaknesses of rare earth magnets.
Advantages
- They retain attractive force for around ten years – the drop is just ~1% (based on simulations),
- Neodymium magnets remain highly resistant to loss of magnetic properties caused by external interference,
- The use of an refined coating of noble metals (nickel, gold, silver) causes the element to look better,
- They feature high magnetic induction at the operating surface, which improves attraction properties,
- 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...
- Possibility of accurate forming as well as optimizing to complex conditions,
- Wide application in modern technologies – they find application in HDD drives, motor assemblies, precision medical tools, also modern systems.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Weaknesses
- To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
- Neodymium magnets lose strength when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and 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 recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- Due to limitations in creating threads and complicated shapes in magnets, we recommend using cover - magnetic mount.
- Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Furthermore, tiny parts of these devices are able to be problematic in diagnostics medical after entering the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities
Pull force analysis
Detachment force of the magnet in optimal conditions – what affects it?
- using a base made of low-carbon steel, serving as a ideal flux conductor
- possessing a massiveness of min. 10 mm to avoid saturation
- with a plane perfectly flat
- with zero gap (no impurities)
- for force applied at a right angle (pull-off, not shear)
- in neutral thermal conditions
Impact of factors on magnetic holding capacity in practice
- Distance – the presence of foreign body (paint, dirt, gap) interrupts the magnetic circuit, which lowers capacity steeply (even by 50% at 0.5 mm).
- Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of maximum force).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
- Chemical composition of the base – low-carbon steel attracts best. Higher carbon content lower magnetic permeability and holding force.
- Smoothness – full contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
- Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was conducted on a smooth plate of suitable thickness, under perpendicular forces, in contrast under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate lowers the load capacity.
H&S for magnets
Health Danger
Individuals with a heart stimulator must keep an absolute distance from magnets. The magnetism can interfere with the operation of the implant.
Do not underestimate power
Before use, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Be predictive.
Magnetic media
Avoid bringing magnets close to a purse, computer, or TV. The magnetism can permanently damage these devices and erase data from cards.
Magnetic interference
GPS units and smartphones are highly susceptible to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Fragile material
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.
No play value
Absolutely store magnets away from children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are very dangerous.
Do not drill into magnets
Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.
Power loss in heat
Do not overheat. Neodymium magnets are sensitive to heat. If you need operation above 80°C, inquire about HT versions (H, SH, UH).
Hand protection
Large magnets can break fingers instantly. Never place your hand between two attracting surfaces.
Skin irritation risks
Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation occurs, immediately stop handling magnets and use protective gear.
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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