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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 of the product - 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
Chemical composition
| 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 proposals
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![SM 25x100 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x100-2xm8-fin.jpg "SM 25x100 [2xM8] / N52 - magnetic separator")
Advantages as well as disadvantages of neodymium magnets.
Benefits
- They retain full power for nearly ten years – the loss is just ~1% (in theory),
- Magnets effectively resist against loss of magnetization caused by ambient magnetic noise,
- The use of an shiny finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Magnets are characterized by excellent magnetic induction on the working surface,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures reaching 230°C and above...
- Possibility of custom modeling as well as modifying to specific conditions,
- Key role in high-tech industry – they are utilized in hard drives, electric drive systems, medical equipment, as well as technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices
Weaknesses
- At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- 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
- Limited possibility of making nuts in the magnet and complex shapes - recommended is casing - magnet mounting.
- Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small components of these devices are able to complicate diagnosis medical after entering the body.
- Due to complex production process, their price is relatively high,
Lifting parameters
Maximum magnetic pulling force – what contributes to it?
- on a block made of structural steel, effectively closing the magnetic flux
- with a cross-section of at least 10 mm
- with an polished contact surface
- without the slightest clearance between the magnet and steel
- under perpendicular force direction (90-degree angle)
- at ambient temperature approx. 20 degrees Celsius
Magnet lifting force in use – key factors
- Air gap (between the magnet and the plate), since even a very small clearance (e.g. 0.5 mm) can cause a drastic drop in force by up to 50% (this also applies to varnish, rust or debris).
- Direction of force – highest force is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
- Material composition – different alloys attracts identically. Alloy additives weaken the interaction with the magnet.
- Surface structure – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
- Temperature – heating the magnet results in weakening of force. Check the thermal limit for a given model.
Lifting capacity testing was conducted on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, however under parallel forces the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate lowers the load capacity.
Safety rules for work with NdFeB magnets
Fragile material
Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.
Fire warning
Dust produced during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.
Hand protection
Danger of trauma: The attraction force is so immense that it can result in hematomas, pinching, and even bone fractures. Protective gloves are recommended.
Health Danger
Medical warning: Strong magnets can turn off heart devices and defibrillators. Stay away if you have electronic implants.
Immense force
Use magnets consciously. Their immense force can shock even experienced users. Be vigilant and respect their power.
GPS Danger
GPS units and smartphones are highly susceptible to magnetic fields. Close proximity with a strong magnet can ruin the sensors in your phone.
Safe distance
Device Safety: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, hearing aids, timepieces).
Skin irritation risks
It is widely known that nickel (standard magnet coating) is a potent allergen. For allergy sufferers, refrain from touching magnets with bare hands or opt for encased magnets.
Operating temperature
Watch the temperature. Heating the magnet to high heat will permanently weaken its properties and pulling force.
No play value
Absolutely store magnets away from children. Risk of swallowing is significant, and the consequences of magnets clamping inside the body are tragic.
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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