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SM 25x325 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130370
GTIN/EAN: 5906301813187
Diameter Ø
25 mm [±1 mm]
Height
325 mm [±1 mm]
Weight
1260 g
Magnetic Flux
~ 9 500 Gauss [±5%]
984.00 ZŁ with VAT / pcs + price for transport
800.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Lifting power and appearance of a neodymium magnet can be tested on our
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Technical details - SM 25x325 [2xM8] / N52 - magnetic separator
Specification / characteristics - SM 25x325 [2xM8] / N52 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130370 |
| GTIN/EAN | 5906301813187 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 325 mm [±1 mm] |
| Weight | 1260 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 9 500 Gauss [±5%] |
| Size/Mount Quantity | 2xM8 |
| Polarity | circumferential - 12 poles |
| Casing Tube Thickness | 1 mm |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N52
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 14.2-14.7 | kGs |
| remenance Br [min. - max.] ? | 1420-1470 | mT |
| coercivity bHc ? | 10.8-12.5 | kOe |
| coercivity bHc ? | 860-995 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 48-53 | BH max MGOe |
| energy density [min. - max.] ? | 380-422 | 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 25x325 [2xM8] / N52
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 325 | mm (L) |
| Active length | 289 | mm |
| Section count | 12 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1212 | g |
| Active area | 227 | 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) | 22.6 | kg (theor.) |
| Induction (surface) | ~9 500 | Gauss (Max) |
Chart 2: Field profile (12 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% |
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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Strengths and weaknesses of rare earth magnets.
Benefits
- They retain attractive force for nearly 10 years – the drop is just ~1% (in theory),
- They show high resistance to demagnetization induced by external field influence,
- Thanks to the shimmering finish, the layer of nickel, gold-plated, or silver-plated gives an modern appearance,
- Magnetic induction on the working layer of the magnet remains very high,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
- Due to the ability of precise molding and customization to individualized solutions, NdFeB magnets can be modeled in a broad palette of shapes and sizes, which expands the range of possible applications,
- Fundamental importance in modern industrial fields – they find application in magnetic memories, electromotive mechanisms, advanced medical instruments, and other advanced devices.
- Relatively small size with high pulling force – neodymium magnets offer high power in small dimensions, which enables their usage in small systems
Cons
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also increases its resistance to damage
- NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (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 - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Limited ability of creating threads in the magnet and complicated shapes - preferred is a housing - magnetic holder.
- Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these products can be problematic in diagnostics medical after entering the body.
- High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Holding force characteristics
Magnetic strength at its maximum – what it depends on?
- using a plate made of mild steel, functioning as a magnetic yoke
- whose transverse dimension equals approx. 10 mm
- with a plane cleaned and smooth
- without any air gap between the magnet and steel
- under axial application of breakaway force (90-degree angle)
- in temp. approx. 20°C
Practical aspects of lifting capacity – factors
- Space between surfaces – every millimeter of separation (caused e.g. by veneer or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Load vector – maximum parameter is available only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically several times smaller (approx. 1/5 of the lifting capacity).
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
- Plate material – low-carbon steel attracts best. Higher carbon content decrease magnetic properties and holding force.
- Surface finish – full contact is possible only on polished steel. Any scratches and bumps create air cushions, reducing force.
- Thermal environment – temperature increase causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.
Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.
Safety rules for work with neodymium magnets
Keep away from electronics
A strong magnetic field interferes with the functioning of compasses in phones and GPS navigation. Keep magnets near a smartphone to prevent breaking the sensors.
Threat to electronics
Powerful magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.
Operating temperature
Regular neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. Damage is permanent.
Medical interference
Health Alert: Neodymium magnets can deactivate pacemakers and defibrillators. Do not approach if you have electronic implants.
Machining danger
Mechanical processing of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Magnet fragility
Beware of splinters. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.
Caution required
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
Product not for children
Absolutely keep magnets away from children. Choking hazard is high, and the effects of magnets connecting inside the body are life-threatening.
Physical harm
Large magnets can crush fingers instantly. Under no circumstances place your hand between two attracting surfaces.
Skin irritation risks
Warning for allergy sufferers: The nickel-copper-nickel coating contains nickel. If skin irritation happens, cease working with magnets and use protective gear.
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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