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SM 25x400 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130365
GTIN/EAN: 5906301813392
Diameter Ø
25 mm [±1 mm]
Height
400 mm [±1 mm]
Weight
1560 g
Magnetic Flux
~ 6 500 Gauss [±5%]
1131.60 ZŁ with VAT / pcs + price for transport
920.00 ZŁ net + 23% VAT / pcs
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Technical data of the product - SM 25x400 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x400 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130365 |
| GTIN/EAN | 5906301813392 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 400 mm [±1 mm] |
| Weight | 1560 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 15 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 |
Table 1: Rod construction
SM 25x400 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 400 | mm (L) |
| Active length | 364 | mm |
| Section count | 15 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1492 | g |
| Active area | 286 | 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) | 10.6 | kg (theor.) |
| Induction (surface) | ~6 500 | Gauss (Max) |
Chart 2: Field profile (15 sections)
Chart 3: Temperature performance
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Pros as well as cons of rare earth magnets.
Benefits
- Their strength is durable, and after approximately 10 years it decreases only by ~1% (according to research),
- They are resistant to demagnetization induced by external field influence,
- By using a decorative layer of nickel, the element gains an modern look,
- Magnets are characterized by huge magnetic induction on the surface,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Possibility of accurate shaping and adjusting to concrete requirements,
- Wide application in innovative solutions – they find application in data components, electric drive systems, medical devices, as well as modern systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in miniature devices
Limitations
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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
- They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Due to limitations in producing nuts and complicated shapes in magnets, we recommend using cover - magnetic mechanism.
- Health risk related to microscopic parts of magnets can be dangerous, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that small elements of these products can disrupt the diagnostic process medical when they are in the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Holding force characteristics
Maximum magnetic pulling force – what affects it?
- with the use of a yoke made of special test steel, guaranteeing maximum field concentration
- whose transverse dimension is min. 10 mm
- with an polished touching surface
- with direct contact (no impurities)
- under vertical force direction (90-degree angle)
- at ambient temperature room level
What influences lifting capacity in practice
- Distance (betwixt the magnet and the metal), because even a microscopic clearance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
- Chemical composition of the base – mild steel gives the best results. Alloy steels reduce magnetic properties and holding force.
- Plate texture – ground elements guarantee perfect abutment, which improves field saturation. Uneven metal weaken the grip.
- Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate decreases the load capacity.
Warnings
Caution required
Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Keep away from children
These products are not suitable for play. Accidental ingestion of a few magnets may result in them attracting across intestines, which constitutes a severe health hazard and necessitates immediate surgery.
Nickel coating and allergies
Medical facts indicate that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, prevent touching magnets with bare hands and choose coated magnets.
Precision electronics
Navigation devices and smartphones are highly susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Mechanical processing
Mechanical processing of NdFeB material carries a risk of fire hazard. Neodymium dust oxidizes rapidly with oxygen and is hard to extinguish.
Thermal limits
Keep cool. Neodymium magnets are sensitive to temperature. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).
Fragile material
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Serious injuries
Pinching hazard: The pulling power is so immense that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.
Electronic hazard
Equipment safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, timepieces).
Health Danger
People with a heart stimulator should maintain an safe separation from magnets. The magnetic field can disrupt the functioning of the implant.
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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