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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
bulk discounts:
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Technical - 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% |
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 rare earth magnets.
Strengths
- They do not lose strength, even over nearly 10 years – the decrease in lifting capacity is only ~1% (according to tests),
- They possess excellent resistance to magnetism drop due to external magnetic sources,
- The use of an elegant finish of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- They feature high magnetic induction at the operating surface, making them more effective,
- 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...
- In view of the potential of accurate molding and customization to custom requirements, magnetic components can be produced in a variety of geometric configurations, which amplifies use scope,
- Fundamental importance in modern industrial fields – they are commonly used in data components, electric motors, advanced medical instruments, and technologically advanced constructions.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Weaknesses
- At very strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop 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
- They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Due to limitations in realizing threads and complicated forms in magnets, we propose using cover - magnetic mechanism.
- Potential hazard to health – tiny shards of magnets are risky, in case of ingestion, which gains importance in the context of child health protection. It is also worth noting that small elements of these devices can complicate diagnosis medical in case of swallowing.
- Due to complex production process, their price exceeds standard values,
Pull force analysis
Maximum holding power of the magnet – what affects it?
- on a base made of structural steel, optimally conducting the magnetic field
- possessing a thickness of minimum 10 mm to avoid saturation
- characterized by smoothness
- under conditions of gap-free contact (metal-to-metal)
- under perpendicular force direction (90-degree angle)
- at conditions approx. 20°C
Practical lifting capacity: influencing factors
- Space between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
- Force direction – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the maximum value.
- Plate thickness – too thin sheet causes magnetic saturation, causing part of the power to be escaped into the air.
- Material composition – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
- Surface structure – the more even the surface, the better the adhesion and stronger the hold. Roughness creates an air distance.
- Operating temperature – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. Additionally, even a small distance between the magnet and the plate lowers the lifting capacity.
H&S for magnets
Fragile material
Despite metallic appearance, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.
Do not overheat magnets
Avoid heat. NdFeB magnets are sensitive to temperature. If you need operation above 80°C, ask us about special high-temperature series (H, SH, UH).
GPS Danger
Navigation devices and mobile phones are extremely sensitive to magnetism. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.
Sensitization to coating
Nickel alert: The Ni-Cu-Ni coating consists of nickel. If skin irritation appears, immediately stop handling magnets and use protective gear.
Combustion hazard
Powder produced during cutting of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.
Danger to the youngest
Absolutely store magnets away from children. Ingestion danger is high, and the effects of magnets clamping inside the body are life-threatening.
Handling guide
Use magnets with awareness. Their immense force can shock even professionals. Stay alert and do not underestimate their power.
Medical interference
Warning for patients: Strong magnetic fields affect medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.
Pinching danger
Protect your hands. Two powerful magnets will join immediately with a force of massive weight, crushing anything in their path. Exercise extreme caution!
Magnetic media
Powerful magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Stay away of min. 10 cm.
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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