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SM 25x175 [2xM8] / N42 - magnetic separator
magnetic separator
Catalog no 130290
GTIN/EAN: 5906301812838
Diameter Ø
25 mm [±1 mm]
Height
175 mm [±1 mm]
Weight
660 g
Magnetic Flux
~ 6 500 Gauss [±5%]
467.40 ZŁ with VAT / pcs + price for transport
380.00 ZŁ net + 23% VAT / pcs
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Physical properties - SM 25x175 [2xM8] / N42 - magnetic separator
Specification / characteristics - SM 25x175 [2xM8] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130290 |
| GTIN/EAN | 5906301812838 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 175 mm [±1 mm] |
| Weight | 660 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 6 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 6 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 25x175 [2xM8] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 175 | mm (L) |
| Active length | 139 | mm |
| Section count | 6 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~653 | g |
| Active area | 109 | 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) | 10.6 | kg (theor.) |
| Induction (surface) | ~6 500 | Gauss (Max) |
Chart 2: Field profile (6 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% |
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 and weaknesses of neodymium magnets.
Pros
- They do not lose strength, even during nearly 10 years – the reduction in lifting capacity is only ~1% (theoretically),
- They feature excellent resistance to magnetism drop due to external magnetic sources,
- In other words, due to the reflective finish of silver, the element looks attractive,
- The surface of neodymium magnets generates a maximum magnetic field – this is a key feature,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
- Thanks to flexibility in constructing and the capacity to adapt to complex applications,
- Universal use in modern industrial fields – they serve a role in data components, electromotive mechanisms, diagnostic systems, and modern systems.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Limitations
- To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously improves its durability.
- Neodymium 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 oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
- We suggest a housing - magnetic holder, due to difficulties in producing threads inside the magnet and complex forms.
- Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which gains importance in the context of child safety. It is also worth noting that tiny parts of these magnets are able to disrupt the diagnostic process 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 can limit application in large quantities
Pull force analysis
Maximum holding power of the magnet – what it depends on?
- with the contact of a sheet made of special test steel, guaranteeing maximum field concentration
- with a thickness minimum 10 mm
- with an ideally smooth contact surface
- with zero gap (without coatings)
- for force applied at a right angle (in the magnet axis)
- in temp. approx. 20°C
Determinants of lifting force in real conditions
- Gap (betwixt the magnet and the metal), as even a tiny clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
- Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Metal type – different alloys reacts the same. Alloy additives weaken the attraction effect.
- Surface structure – the smoother and more polished the surface, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
- Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.
Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under parallel forces the load capacity is reduced by as much as 5 times. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.
Warnings
Do not give to children
Product intended for adults. Tiny parts pose a choking risk, causing intestinal necrosis. Store away from children and animals.
Caution required
Handle with care. Neodymium magnets act from a distance and snap with huge force, often faster than you can react.
Danger to pacemakers
Individuals with a pacemaker have to keep an safe separation from magnets. The magnetic field can disrupt the functioning of the implant.
GPS and phone interference
A powerful magnetic field interferes with the functioning of magnetometers in smartphones and GPS navigation. Keep magnets close to a smartphone to prevent breaking the sensors.
Magnetic media
Avoid bringing magnets near a purse, computer, or TV. The magnetism can destroy these devices and wipe information from cards.
Nickel allergy
Certain individuals experience a sensitization to Ni, which is the common plating for neodymium magnets. Extended handling may cause a rash. We strongly advise use protective gloves.
Crushing risk
Pinching hazard: The pulling power is so great that it can result in blood blisters, crushing, and even bone fractures. Use thick gloves.
Flammability
Powder generated during grinding of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.
Thermal limits
Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will destroy its properties and pulling force.
Beware of splinters
Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
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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