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SM 25x200 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130291
GTIN/EAN: 5906301812845
Diameter Ø
25 mm [±1 mm]
Height
200 mm [±1 mm]
Weight
760 g
Magnetic Flux
~ 6 500 Gauss [±5%]
541.20 ZŁ with VAT / pcs + price for transport
440.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Parameters along with form of neodymium magnets can be analyzed using our
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Technical details - SM 25x200 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x200 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130291 |
| GTIN/EAN | 5906301812845 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 200 mm [±1 mm] |
| Weight | 760 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 7 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 25x200 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 200 | mm (L) |
| Active length | 164 | mm |
| Section count | 7 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~746 | g |
| Active area | 129 | 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 (7 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% |
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 as well as cons of neodymium magnets.
Advantages
- Their strength is durable, and after approximately 10 years it drops only by ~1% (theoretically),
- Neodymium magnets are exceptionally resistant to magnetic field loss caused by external magnetic fields,
- In other words, due to the metallic finish of nickel, the element gains a professional look,
- Magnets have very high magnetic induction on the active area,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
- Thanks to the possibility of precise shaping and customization to unique projects, magnetic components can be created in a wide range of geometric configurations, which amplifies use scope,
- Versatile presence in advanced technology sectors – they find application in mass storage devices, electric motors, advanced medical instruments, also multitasking production systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
- To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (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, in case of application outdoors
- Due to limitations in producing nuts and complex forms in magnets, we propose using cover - magnetic mount.
- Possible danger resulting from small fragments of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, small components of these devices are able to disrupt the diagnostic process medical when they are in the body.
- With mass production the cost of neodymium magnets can be a barrier,
Holding force characteristics
Maximum lifting force for a neodymium magnet – what affects it?
- with the contact of a yoke made of special test steel, ensuring maximum field concentration
- with a cross-section of at least 10 mm
- with an ground touching surface
- with total lack of distance (no paint)
- during detachment in a direction vertical to the mounting surface
- at ambient temperature room level
Lifting capacity in real conditions – factors
- Distance – existence of foreign body (paint, tape, air) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Angle of force application – highest force is reached only during pulling at a 90° angle. The shear force of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
- Plate thickness – insufficiently thick steel causes magnetic saturation, causing part of the flux to be wasted into the air.
- Chemical composition of the base – mild steel attracts best. Higher carbon content reduce magnetic properties and holding force.
- Surface condition – ground elements ensure maximum contact, which improves force. Rough surfaces reduce efficiency.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under shearing force the holding force is lower. Additionally, even a slight gap between the magnet and the plate reduces the holding force.
Precautions when working with NdFeB magnets
Impact on smartphones
A strong magnetic field interferes with the operation of magnetometers in phones and navigation systems. Keep magnets close to a smartphone to prevent breaking the sensors.
Fragile material
Beware of splinters. Magnets can fracture upon violent connection, ejecting shards into the air. Wear goggles.
Skin irritation risks
Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, cease handling magnets and use protective gear.
Respect the power
Handle with care. Neodymium magnets attract from a distance and snap with huge force, often faster than you can react.
Cards and drives
Powerful magnetic fields can destroy records on credit cards, HDDs, and storage devices. Keep a distance of at least 10 cm.
Serious injuries
Big blocks can smash fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.
Dust explosion hazard
Fire warning: Neodymium dust is highly flammable. Do not process magnets in home conditions as this risks ignition.
Thermal limits
Control the heat. Exposing the magnet to high heat will destroy its properties and strength.
Medical implants
For implant holders: Powerful magnets disrupt medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.
Do not give to children
Neodymium magnets are not toys. Eating several magnets may result in them attracting across intestines, which constitutes a direct threat to life and necessitates immediate surgery.
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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