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SM 32x275 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130376
GTIN/EAN: 5906301813248
Diameter Ø
32 mm [±1 mm]
Height
275 mm [±1 mm]
Weight
1475 g
Magnetic Flux
~ 8 000 Gauss [±5%]
824.10 ZŁ with VAT / pcs + price for transport
670.00 ZŁ net + 23% VAT / pcs
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Technical details - SM 32x275 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 32x275 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130376 |
| GTIN/EAN | 5906301813248 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 275 mm [±1 mm] |
| Weight | 1475 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 000 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 10 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 32x275 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 32 | mm |
| Total length | 275 | mm (L) |
| Active length | 239 | mm |
| Section count | 10 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1681 | g |
| Active area | 240 | 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) | 26.2 | kg (theor.) |
| Induction (surface) | ~8 000 | Gauss (Max) |
Chart 2: Field profile (10 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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Pros and cons of rare earth magnets.
Pros
- They virtually do not lose power, because even after ten years the performance loss is only ~1% (in laboratory conditions),
- Neodymium magnets are highly resistant to loss of magnetic properties caused by external interference,
- Thanks to the glossy finish, the surface of Ni-Cu-Ni, gold-plated, or silver-plated gives an aesthetic appearance,
- The surface of neodymium magnets generates a concentrated magnetic field – this is a distinguishing feature,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Thanks to freedom in shaping and the ability to modify to complex applications,
- Fundamental importance in advanced technology sectors – they are commonly used in mass storage devices, electromotive mechanisms, medical equipment, also 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 suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
- NdFeB magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and 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 advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, when using outdoors
- We recommend casing - magnetic mechanism, due to difficulties in creating nuts inside the magnet and complicated shapes.
- Possible danger related to microscopic parts of magnets are risky, if swallowed, which gains importance in the context of child health protection. Additionally, tiny parts of these magnets can disrupt the diagnostic process medical after entering the body.
- Due to expensive raw materials, their price is relatively high,
Pull force analysis
Maximum holding power of the magnet – what affects it?
- using a plate made of low-carbon steel, acting as a ideal flux conductor
- whose thickness is min. 10 mm
- characterized by smoothness
- without any insulating layer between the magnet and steel
- for force applied at a right angle (pull-off, not shear)
- at temperature approx. 20 degrees Celsius
Impact of factors on magnetic holding capacity in practice
- Gap between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
- Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
- Plate thickness – too thin steel causes magnetic saturation, causing part of the flux to be escaped into the air.
- Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures lower magnetic properties and lifting capacity.
- Plate texture – smooth surfaces guarantee perfect abutment, which increases force. Uneven metal reduce efficiency.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity was determined with the use of a polished steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the holding force is lower. In addition, even a minimal clearance between the magnet and the plate lowers the holding force.
Safe handling of NdFeB magnets
Machining danger
Powder generated during grinding of magnets is combustible. Avoid drilling into magnets unless you are an expert.
Allergic reactions
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If an allergic reaction happens, immediately stop handling magnets and wear gloves.
Protective goggles
Neodymium magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets will cause them cracking into shards.
Life threat
Warning for patients: Powerful magnets affect electronics. Keep minimum 30 cm distance or request help to handle the magnets.
Electronic devices
Very strong magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.
Impact on smartphones
Remember: neodymium magnets produce a field that confuses sensitive sensors. Maintain a separation from your mobile, tablet, and navigation systems.
Swallowing risk
Adult use only. Small elements can be swallowed, causing intestinal necrosis. Keep out of reach of kids and pets.
Respect the power
Use magnets consciously. Their powerful strength can surprise even experienced users. Stay alert and respect their power.
Bone fractures
Mind your fingers. Two large magnets will join immediately with a force of massive weight, destroying everything in their path. Be careful!
Operating temperature
Avoid heat. NdFeB magnets are sensitive to temperature. If you require operation above 80°C, inquire about special high-temperature series (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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