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SM 25x325 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130349
GTIN/EAN: 5906301812975
Diameter Ø
25 mm [±1 mm]
Height
325 mm [±1 mm]
Weight
1260 g
Magnetic Flux
~ 6 500 Gauss [±5%]
910.20 ZŁ with VAT / pcs + price for transport
740.00 ZŁ net + 23% VAT / pcs
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Technical specification - SM 25x325 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x325 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130349 |
| GTIN/EAN | 5906301812975 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 325 mm [±1 mm] |
| Weight | 1260 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 12 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 25x325 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 325 | mm (L) |
| Active length | 289 | mm |
| Section count | 12 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1212 | g |
| Active area | 227 | 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 (12 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 |
Other proposals
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Pros and cons of Nd2Fe14B magnets.
Strengths
- They do not lose magnetism, even after approximately ten years – the drop in strength is only ~1% (according to tests),
- They maintain their magnetic properties even under external field action,
- By using a reflective layer of silver, the element gains an elegant look,
- The surface of neodymium magnets generates a strong magnetic field – this is one of their assets,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
- Thanks to freedom in constructing and the ability to adapt to complex applications,
- Wide application in future technologies – they are used in HDD drives, drive modules, diagnostic systems, and technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which enables their usage in miniature devices
Cons
- At strong impacts they can break, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- We suggest casing - magnetic holder, due to difficulties in producing nuts inside the magnet and complicated shapes.
- Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, small components of these products are able to be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Holding force characteristics
Best holding force of the magnet in ideal parameters – what it depends on?
- using a plate made of mild steel, serving as a magnetic yoke
- with a cross-section of at least 10 mm
- characterized by lack of roughness
- under conditions of ideal adhesion (metal-to-metal)
- during pulling in a direction perpendicular to the mounting surface
- in neutral thermal conditions
Lifting capacity in practice – influencing factors
- Distance – the presence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to pulling vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of maximum force).
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Material type – the best choice is high-permeability steel. Stainless steels may generate lower lifting capacity.
- Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Uneven metal reduce efficiency.
- Thermal environment – temperature increase results in weakening of force. It is worth remembering the thermal limit for a given model.
Lifting capacity was measured by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under attempts to slide the magnet the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.
Warnings
Thermal limits
Avoid heat. NdFeB magnets are susceptible to temperature. If you need operation above 80°C, look for HT versions (H, SH, UH).
Threat to electronics
Powerful magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Stay away of at least 10 cm.
Precision electronics
A strong magnetic field negatively affects the functioning of magnetometers in smartphones and navigation systems. Do not bring magnets near a device to avoid damaging the sensors.
Bodily injuries
Large magnets can smash fingers in a fraction of a second. Do not put your hand betwixt two attracting surfaces.
Dust is flammable
Machining of NdFeB material carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
Nickel coating and allergies
Certain individuals suffer from a sensitization to Ni, which is the standard coating for NdFeB magnets. Frequent touching might lead to dermatitis. We recommend use safety gloves.
Protective goggles
Despite metallic appearance, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Danger to pacemakers
Life threat: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.
Caution required
Before use, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.
Danger to the youngest
Strictly keep magnets out of reach of children. Ingestion danger is high, and the consequences of magnets clamping inside the body are very dangerous.
Tabela kosztu i czasu dostawy
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Przesyłka będzie u Ciebie za 2-3 dni
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Płatność przy odbiorze (pobranie):
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Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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