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SM 18x175 [2xM5] / N42 - magnetic separator
magnetic separator
Catalog no 130272
GTIN/EAN: 5906301812746
Diameter Ø
18 mm [±1 mm]
Height
175 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 5 400 Gauss [±5%]
387.45 ZŁ with VAT / pcs + price for transport
315.00 ZŁ net + 23% VAT / pcs
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Physical properties - SM 18x175 [2xM5] / N42 - magnetic separator
Specification / characteristics - SM 18x175 [2xM5] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130272 |
| GTIN/EAN | 5906301812746 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 18 mm [±1 mm] |
| Height | 175 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 - 8 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 18x175 [2xM5] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 18 | mm |
| Total length | 175 | mm (L) |
| Active length | 139 | mm |
| Section count | 6 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~338 | g |
| Active area | 79 | 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) | 5.5 | kg (theor.) |
| Induction (surface) | ~6 500 | Gauss (Max) |
Chart 2: Field profile (6 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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Advantages and disadvantages of neodymium magnets.
Strengths
- They do not lose strength, even during nearly 10 years – the decrease in power is only ~1% (according to tests),
- They do not lose their magnetic properties even under strong external field,
- A magnet with a smooth silver surface has better aesthetics,
- Magnets possess impressive magnetic induction on the outer layer,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures reaching 230°C and above...
- Possibility of custom machining and optimizing to individual requirements,
- Wide application in modern industrial fields – they find application in HDD drives, electromotive mechanisms, medical devices, and modern systems.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which enables their usage in miniature devices
Disadvantages
- They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
- Neodymium magnets lose 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
- Magnets exposed to a humid environment can rust. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Limited ability of creating threads in the magnet and complicated shapes - recommended is cover - magnet mounting.
- Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which is particularly important in the context of child health protection. Additionally, small elements of these magnets can disrupt the diagnostic process medical when they are in the body.
- Due to neodymium price, their price is higher than average,
Holding force characteristics
Maximum lifting force for a neodymium magnet – what it depends on?
- using a base made of mild steel, acting as a magnetic yoke
- possessing a thickness of minimum 10 mm to ensure full flux closure
- with an ideally smooth touching surface
- under conditions of ideal adhesion (surface-to-surface)
- for force applied at a right angle (in the magnet axis)
- in temp. approx. 20°C
Impact of factors on magnetic holding capacity in practice
- Distance (betwixt the magnet and the plate), because even a tiny distance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Force direction – note that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
- Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Metal type – not every steel attracts identically. Alloy additives weaken the attraction effect.
- Smoothness – full contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, reducing force.
- Operating temperature – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).
Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet and the plate decreases the load capacity.
Safe handling of neodymium magnets
Safe distance
Avoid bringing magnets close to a wallet, laptop, or TV. The magnetism can destroy these devices and erase data from cards.
Risk of cracking
Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. We recommend safety glasses.
Implant safety
Warning for patients: Powerful magnets affect electronics. Maintain at least 30 cm distance or request help to handle the magnets.
Magnetic interference
Navigation devices and smartphones are extremely sensitive to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the internal compass in your phone.
Operating temperature
Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will ruin its properties and strength.
Finger safety
Watch your fingers. Two large magnets will snap together instantly with a force of massive weight, crushing anything in their path. Be careful!
Do not give to children
Always keep magnets away from children. Risk of swallowing is high, and the effects of magnets clamping inside the body are fatal.
Allergy Warning
A percentage of the population have a contact allergy to nickel, which is the standard coating for NdFeB magnets. Frequent touching might lead to skin redness. We strongly advise use safety gloves.
Immense force
Use magnets consciously. Their immense force can surprise even professionals. Stay alert and respect their force.
Dust explosion hazard
Combustion risk: Rare earth powder is highly flammable. Avoid machining magnets without safety gear as this may cause fire.
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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