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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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Technical - 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% |
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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Advantages and disadvantages of rare earth magnets.
Advantages
- They virtually do not lose strength, because even after 10 years the decline in efficiency is only ~1% (based on calculations),
- Neodymium magnets are characterized by extremely resistant to demagnetization caused by external magnetic fields,
- A magnet with a smooth gold surface has better aesthetics,
- Magnetic induction on the working part of the magnet is strong,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling functioning at temperatures reaching 230°C and above...
- Considering the potential of precise shaping and adaptation to specialized solutions, neodymium magnets can be produced in a wide range of forms and dimensions, which increases their versatility,
- Fundamental importance in innovative solutions – they are used in computer drives, drive modules, advanced medical instruments, as well as complex engineering applications.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which makes them useful in compact constructions
Cons
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a special holder, which not only secures them against impacts but also raises their durability
- Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- We recommend a housing - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated shapes.
- Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child safety. Additionally, small components of these products are able to be problematic in diagnostics medical when they are in the body.
- Due to complex production process, their price is relatively high,
Lifting parameters
Maximum lifting capacity of the magnet – what contributes to it?
- with the contact of a yoke made of special test steel, guaranteeing maximum field concentration
- possessing a thickness of min. 10 mm to ensure full flux closure
- characterized by lack of roughness
- with zero gap (without coatings)
- during pulling in a direction vertical to the mounting surface
- at temperature approx. 20 degrees Celsius
Magnet lifting force in use – key factors
- Gap (between the magnet and the metal), because even a microscopic clearance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Load vector – highest force is reached only during perpendicular pulling. The shear force of the magnet along the plate is typically several times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Plate material – low-carbon steel gives the best results. Alloy admixtures reduce magnetic properties and holding force.
- Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Rough surfaces reduce efficiency.
- Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).
Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under perpendicular forces, whereas under parallel forces the load capacity is reduced by as much as 5 times. Moreover, even a minimal clearance between the magnet and the plate lowers the load capacity.
Safety rules for work with neodymium magnets
Protective goggles
Protect your eyes. Magnets can explode upon violent connection, ejecting shards into the air. Eye protection is mandatory.
Fire warning
Drilling and cutting of neodymium magnets carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Power loss in heat
Standard neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. Damage is permanent.
Handling guide
Use magnets consciously. Their powerful strength can surprise even experienced users. Stay alert and respect their power.
Compass and GPS
Remember: neodymium magnets generate a field that interferes with sensitive sensors. Keep a safe distance from your phone, device, and navigation systems.
Crushing risk
Risk of injury: The pulling power is so immense that it can cause hematomas, pinching, and broken bones. Use thick gloves.
Magnetic media
Very strong magnetic fields can erase data on payment cards, HDDs, and storage devices. Keep a distance of min. 10 cm.
Allergy Warning
Studies show that the nickel plating (the usual finish) is a strong allergen. If your skin reacts to metals, prevent touching magnets with bare hands or choose encased magnets.
Health Danger
Warning for patients: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or request help to work with the magnets.
This is not a toy
These products are not toys. Eating several magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and requires urgent medical intervention.
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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