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SM 32x250 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130299
GTIN/EAN: 5906301812920
- Diameter Ø
- 32 mm [±1 mm]
- Height
- 250 mm [±1 mm]
- Weight
- 1240 g
- Magnetic Flux
- ~ 8 000 Gauss [±5%]
873.30 zł with VAT / pcs + price for transport
710.00 zł net + 23% VAT / pcs
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Specifications along with shape of a neodymium magnet can be calculated using our
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Technical of the product - SM 32x250 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 32x250 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130299 |
| GTIN/EAN | 5906301812920 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 250 mm [±1 mm] |
| Weight | 1240 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 000 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 9 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 32x250 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 32 | mm |
| Total length | 250 | mm (L) |
| Active length | 214 | mm |
| Section count | 9 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1528 | g |
| Active area | 215 | 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 (9 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Strengths as well as weaknesses of rare earth magnets.
Strengths
- They retain magnetic properties for around 10 years – the drop is just ~1% (according to analyses),
- They possess excellent resistance to magnetism drop when exposed to opposing magnetic fields,
- Thanks to the reflective finish, the plating of nickel, gold, or silver-plated gives an elegant appearance,
- Magnets are distinguished by maximum magnetic induction on the outer layer,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the shape) even at a temperature of 230°C or more...
- Possibility of precise shaping and adapting to complex needs,
- Versatile presence in high-tech industry – they are utilized in magnetic memories, drive modules, precision medical tools, and technologically advanced constructions.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Limitations
- Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a steel housing, which not only secures them against impacts but also raises their durability
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
- Limited possibility of creating nuts in the magnet and complex forms - recommended is casing - magnet mounting.
- Health risk to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. Furthermore, small components of these products are able to be problematic in diagnostics medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Holding force characteristics
Best holding force of the magnet in ideal parameters – what affects it?
- on a plate made of structural steel, optimally conducting the magnetic flux
- whose transverse dimension equals approx. 10 mm
- with an polished touching surface
- without any clearance between the magnet and steel
- under vertical application of breakaway force (90-degree angle)
- at temperature approx. 20 degrees Celsius
Impact of factors on magnetic holding capacity in practice
- Space between magnet and steel – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
- Angle of force application – maximum parameter is obtained only during pulling at a 90° angle. The shear force of the magnet along the surface is usually many times smaller (approx. 1/5 of the lifting capacity).
- Base massiveness – insufficiently thick sheet causes magnetic saturation, causing part of the power to be wasted into the air.
- Metal type – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
- Plate texture – ground elements ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and at low temperatures 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, in contrast under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.
Safety rules for work with neodymium magnets
Mechanical processing
Machining of NdFeB material poses a fire hazard. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.
Allergic reactions
Studies show that the nickel plating (standard magnet coating) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands and opt for coated magnets.
Safe distance
Avoid bringing magnets near a purse, laptop, or screen. The magnetic field can permanently damage these devices and erase data from cards.
Bodily injuries
Watch your fingers. Two powerful magnets will join immediately with a force of massive weight, destroying anything in their path. Be careful!
Thermal limits
Watch the temperature. Heating the magnet to high heat will permanently weaken its properties and strength.
Magnetic interference
A powerful magnetic field disrupts the operation of compasses in phones and navigation systems. Do not bring magnets close to a device to avoid breaking the sensors.
Conscious usage
Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
Fragile material
NdFeB magnets are sintered ceramics, which means they are prone to chipping. Collision of two magnets will cause them shattering into shards.
Pacemakers
Warning for patients: Strong magnetic fields disrupt medical devices. Keep at least 30 cm distance or request help to handle the magnets.
Danger to the youngest
Only for adults. Small elements pose a choking risk, leading to severe trauma. Store out of reach of children and animals.
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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