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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 |
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Pros as well as cons of Nd2Fe14B magnets.
Strengths
- Their power remains stable, and after around ten years it drops only by ~1% (according to research),
- Neodymium magnets are highly resistant to demagnetization caused by magnetic disturbances,
- In other words, due to the reflective surface of gold, the element looks attractive,
- Magnets possess impressive magnetic induction on the outer layer,
- 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 versatility in shaping and the ability to adapt to complex applications,
- Wide application in future technologies – they are utilized in hard drives, electric drive systems, precision medical tools, also technologically advanced constructions.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Weaknesses
- At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
- Due to limitations in producing nuts and complicated forms in magnets, we propose using cover - magnetic mount.
- Health risk resulting from small fragments of magnets can be dangerous, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts 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 hinders application in large quantities
Pull force analysis
Magnetic strength at its maximum – what affects it?
- with the use of a sheet made of low-carbon steel, ensuring maximum field concentration
- whose thickness is min. 10 mm
- characterized by lack of roughness
- without the slightest air gap between the magnet and steel
- under axial force vector (90-degree angle)
- at ambient temperature approx. 20 degrees Celsius
What influences lifting capacity in practice
- Distance – the presence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
- Angle of force application – highest force is reached only during perpendicular pulling. The shear force of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
- Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Material type – ideal substrate is pure iron steel. Stainless steels may have worse magnetic properties.
- Surface finish – full contact is obtained only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
- Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.
Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet and the plate reduces the load capacity.
Safety rules for work with NdFeB magnets
Combustion hazard
Powder generated during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.
Protect data
Equipment safety: Strong magnets can damage payment cards and sensitive devices (heart implants, medical aids, mechanical watches).
Bone fractures
Mind your fingers. Two powerful magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Be careful!
Compass and GPS
GPS units and mobile phones are highly susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the internal compass in your phone.
Magnets are brittle
Despite metallic appearance, neodymium is brittle and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.
Sensitization to coating
Some people have a hypersensitivity to nickel, which is the typical protective layer for neodymium magnets. Frequent touching may cause an allergic reaction. It is best to use protective gloves.
Swallowing risk
These products are not intended for children. Eating a few magnets can lead to them pinching intestinal walls, which poses a severe health hazard and necessitates urgent medical intervention.
Warning for heart patients
Individuals with a ICD must keep an large gap from magnets. The magnetic field can disrupt the operation of the implant.
Permanent damage
Regular neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.
Powerful field
Exercise caution. Rare earth magnets act from a distance and connect with huge force, often quicker than you can move away.
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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