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SM 18x250 [2xM5] / N42 - magnetic separator
magnetic separator
Catalog no 130275
GTIN/EAN: 5906301812777
Diameter Ø
18 mm [±1 mm]
Height
250 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 5 400 Gauss [±5%]
553.50 ZŁ with VAT / pcs + price for transport
450.00 ZŁ net + 23% VAT / pcs
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Detailed specification - SM 18x250 [2xM5] / N42 - magnetic separator
Specification / characteristics - SM 18x250 [2xM5] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130275 |
| GTIN/EAN | 5906301812777 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 18 mm [±1 mm] |
| Height | 250 mm [±1 mm] |
| Weight | 0.01 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 5 400 Gauss [±5%] |
| Size/Mount Quantity | 2xM5 |
| Polarity | circumferential - 11 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 18x250 [2xM5] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 18 | mm |
| Total length | 250 | mm (L) |
| Active length | 214 | mm |
| Section count | 9 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~483 | g |
| Active area | 121 | 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) | 3.8 | kg (theor.) |
| Induction (surface) | ~5 400 | Gauss (Max) |
Chart 2: Field profile (9 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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other deals
Advantages as well as disadvantages of Nd2Fe14B magnets.
Pros
- They do not lose strength, even after approximately ten years – the decrease in lifting capacity is only ~1% (based on measurements),
- They maintain their magnetic properties even under external field action,
- Thanks to the metallic finish, the layer of Ni-Cu-Ni, gold-plated, or silver-plated gives an visually attractive appearance,
- Neodymium magnets create maximum magnetic induction on a their surface, which allows for strong attraction,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- Possibility of detailed forming and optimizing to specific applications,
- Universal use in advanced technology sectors – they are utilized in magnetic memories, brushless drives, diagnostic systems, and modern systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems
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 raises their durability
- Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
- Limited possibility of creating nuts in the magnet and complex shapes - recommended is cover - magnetic holder.
- Potential hazard to health – tiny shards of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. Furthermore, small components of these products are able to complicate diagnosis medical when they are in the body.
- Due to neodymium price, their price exceeds standard values,
Lifting parameters
Magnetic strength at its maximum – what contributes to it?
- on a base made of mild steel, effectively closing the magnetic field
- with a cross-section minimum 10 mm
- with an polished touching surface
- without any insulating layer between the magnet and steel
- for force acting at a right angle (in the magnet axis)
- in temp. approx. 20°C
Determinants of lifting force in real conditions
- Clearance – the presence of foreign body (rust, tape, air) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
- Loading method – catalog parameter refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
- Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
- Plate material – low-carbon steel gives the best results. Higher carbon content reduce magnetic properties and holding force.
- Surface quality – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
- Thermal environment – temperature increase results in weakening of induction. Check the thermal limit for a given model.
Lifting capacity testing was performed on a smooth plate of optimal thickness, under perpendicular forces, however under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet and the plate decreases the load capacity.
Safety rules for work with NdFeB magnets
Protect data
Intense magnetic fields can destroy records on payment cards, HDDs, and storage devices. Maintain a gap of at least 10 cm.
Permanent damage
Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. This process is irreversible.
Health Danger
For implant holders: Powerful magnets affect medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.
Finger safety
Risk of injury: The attraction force is so great that it can cause hematomas, pinching, and even bone fractures. Use thick gloves.
GPS Danger
Remember: neodymium magnets generate a field that disrupts sensitive sensors. Maintain a separation from your phone, device, and GPS.
Conscious usage
Exercise caution. Rare earth magnets attract from a long distance and snap with huge force, often quicker than you can move away.
This is not a toy
NdFeB magnets are not intended for children. Swallowing a few magnets can lead to them attracting across intestines, which poses a critical condition and requires urgent medical intervention.
Beware of splinters
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into sharp, dangerous pieces.
Nickel allergy
Certain individuals suffer from a sensitization to Ni, which is the standard coating for NdFeB magnets. Prolonged contact may cause dermatitis. We suggest wear safety gloves.
Fire risk
Powder generated during machining of magnets is self-igniting. Do not drill into magnets unless you are an expert.
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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