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SM 25x225 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130354
GTIN/EAN: 5906301813026
- Diameter Ø
- 25 mm [±1 mm]
- Height
- 225 mm [±1 mm]
- Weight
- 860 g
- Magnetic Flux
- ~ 8 500 Gauss [±5%]
688.80 zł with VAT / pcs + price for transport
560.00 zł net + 23% VAT / pcs
bulk discounts:
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Technical of the product - SM 25x225 [2xM8] / N52 - magnetic separator
Specification / characteristics - SM 25x225 [2xM8] / N52 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130354 |
| GTIN/EAN | 5906301813026 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 225 mm [±1 mm] |
| Weight | 860 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| Polarity | circumferential - 8 poles |
| Casing Tube Thickness | 1 mm |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N52
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 14.2-14.7 | kGs |
| remenance Br [min. - max.] ? | 1420-1470 | mT |
| coercivity bHc ? | 10.8-12.5 | kOe |
| coercivity bHc ? | 860-995 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 48-53 | BH max MGOe |
| energy density [min. - max.] ? | 380-422 | 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 |
Table 1: Rod construction
SM 25x225 [2xM8] / N52
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 225 | mm (L) |
| Active length | 189 | mm |
| Section count | 8 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~839 | g |
| Active area | 148 | cm² (Area) |
| Housing material | AISI 304 | 1.4301 (Inox) |
| Surface finish | Ra < 0.8 µm | Polished |
| Temp. class | 80°C | Standard (N) |
| Force loss (at max °C) | -12.8% | Reversible loss (physics) |
| Force (calculated) | 18.1 | kg (theor.) |
| Induction (surface) | ~8 500 | Gauss (Max) |
Chart 2: Field profile (8 sections)
Chart 3: Temperature performance
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 as well as disadvantages of neodymium magnets.
Benefits
- They have unchanged lifting capacity, and over nearly 10 years their performance decreases symbolically – ~1% (according to theory),
- They do not lose their magnetic properties even under external field action,
- The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
- Neodymium magnets ensure maximum magnetic induction on a contact point, which increases force concentration,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Thanks to freedom in shaping and the ability to adapt to complex applications,
- Huge importance in electronics industry – they find application in HDD drives, electric drive systems, diagnostic systems, and other advanced devices.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Limitations
- To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
- NdFeB 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 very resistant to heat
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Limited ability of producing nuts in the magnet and complicated shapes - preferred is a housing - mounting mechanism.
- Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, small elements of these magnets can complicate diagnosis medical in case of swallowing.
- With budget limitations the cost of neodymium magnets can be a barrier,
Holding force characteristics
Maximum lifting force for a neodymium magnet – what affects it?
- with the application of a yoke made of low-carbon steel, ensuring full magnetic saturation
- with a cross-section minimum 10 mm
- with a surface perfectly flat
- without the slightest air gap between the magnet and steel
- under vertical force vector (90-degree angle)
- at room temperature
Impact of factors on magnetic holding capacity in practice
- Air gap (betwixt the magnet and the metal), since even a very small distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
- Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the nominal value.
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Chemical composition of the base – low-carbon steel gives the best results. Higher carbon content reduce magnetic properties and lifting capacity.
- Surface finish – full contact is possible only on polished steel. Rough texture create air cushions, reducing force.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).
Holding force was tested on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the lifting capacity is smaller. Moreover, even a slight gap between the magnet’s surface and the plate decreases the lifting capacity.
Precautions when working with NdFeB magnets
Metal Allergy
It is widely known that nickel (standard magnet coating) is a potent allergen. For allergy sufferers, avoid touching magnets with bare hands and choose encased magnets.
Permanent damage
Do not overheat. Neodymium magnets are sensitive to heat. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).
Compass and GPS
A powerful magnetic field negatively affects the functioning of compasses in phones and navigation systems. Do not bring magnets close to a smartphone to avoid breaking the sensors.
Electronic hazard
Intense magnetic fields can corrupt files on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.
Adults only
Only for adults. Tiny parts can be swallowed, causing intestinal necrosis. Keep away from kids and pets.
Warning for heart patients
For implant holders: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or request help to work with the magnets.
Mechanical processing
Drilling and cutting of neodymium magnets poses a fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Conscious usage
Handle magnets consciously. Their huge power can shock even experienced users. Be vigilant and respect their power.
Serious injuries
Danger of trauma: The pulling power is so great that it can cause hematomas, crushing, and broken bones. Protective gloves are recommended.
Protective goggles
NdFeB magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets leads to them shattering into small pieces.
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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