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SM 25x225 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130292
GTIN/EAN: 5906301812852
Diameter Ø
25 mm [±1 mm]
Height
225 mm [±1 mm]
Weight
860 g
Magnetic Flux
~ 6 500 Gauss [±5%]
615.00 ZŁ with VAT / pcs + price for transport
500.00 ZŁ net + 23% VAT / pcs
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Technical details - SM 25x225 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x225 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130292 |
| GTIN/EAN | 5906301812852 |
| 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 | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 8 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 25x225 [2xM8] / N42
| 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) | 10.6 | kg (theor.) |
| Induction (surface) | ~6 500 | Gauss (Max) |
Chart 2: Field profile (8 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 |
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Pros as well as cons of Nd2Fe14B magnets.
Advantages
- They have unchanged lifting capacity, and over around ten years their performance decreases symbolically – ~1% (in testing),
- Neodymium magnets are distinguished by remarkably resistant to magnetic field loss caused by external interference,
- Thanks to the glossy finish, the layer of nickel, gold, or silver gives an elegant appearance,
- Magnetic induction on the working part of the magnet is strong,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Thanks to the option of flexible molding and adaptation to specialized needs, neodymium magnets can be created in a broad palette of geometric configurations, which increases their versatility,
- Significant place in electronics industry – they serve a role in HDD drives, drive modules, advanced medical instruments, as well as technologically advanced constructions.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons
- Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We recommend keeping them in a steel housing, which not only secures them against impacts but also increases their durability
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Magnets exposed to a humid environment can rust. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in creating threads and complex shapes in magnets, we propose using casing - magnetic mechanism.
- Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. Furthermore, small elements of these products can be problematic in diagnostics medical when they are in the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities
Lifting parameters
Maximum holding power of the magnet – what affects it?
- on a plate made of mild steel, optimally conducting the magnetic field
- with a thickness of at least 10 mm
- characterized by lack of roughness
- with total lack of distance (no impurities)
- during pulling in a direction vertical to the mounting surface
- at ambient temperature room level
Lifting capacity in practice – influencing factors
- Distance (betwixt the magnet and the plate), because even a microscopic clearance (e.g. 0.5 mm) results in 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 capacity drops drastically, often to levels of 20-30% of the nominal value.
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
- Chemical composition of the base – mild steel gives the best results. Alloy steels reduce magnetic permeability and holding force.
- Surface quality – the more even the surface, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
- Temperature influence – hot environment weakens pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the load capacity is reduced by as much as 75%. Additionally, even a minimal clearance between the magnet and the plate reduces the lifting capacity.
Warnings
Protect data
Equipment safety: Strong magnets can ruin payment cards and delicate electronics (pacemakers, medical aids, timepieces).
Danger to the youngest
Absolutely keep magnets out of reach of children. Choking hazard is significant, and the effects of magnets connecting inside the body are tragic.
Serious injuries
Big blocks can crush fingers in a fraction of a second. Never put your hand between two attracting surfaces.
Implant safety
Warning for patients: Strong magnetic fields disrupt electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.
Phone sensors
GPS units and smartphones are highly susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the sensors in your phone.
Powerful field
Handle magnets consciously. Their huge power can shock even experienced users. Be vigilant and do not underestimate their power.
Material brittleness
Despite the nickel coating, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.
Machining danger
Machining of neodymium magnets poses a fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Nickel coating and allergies
Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness appears, immediately stop handling magnets and use protective gear.
Heat sensitivity
Do not overheat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, ask us about HT versions (H, SH, UH).
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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