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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
~ 8 500 Gauss [±5%]
984.00 ZŁ with VAT / pcs + price for transport
800.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Detailed specification - 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 | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| 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) | 18.1 | kg (theor.) |
| Induction (surface) | ~8 500 | 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 neodymium magnets.
Strengths
- They retain full power for nearly ten years – the drop is just ~1% (based on simulations),
- They maintain their magnetic properties even under close interference source,
- In other words, due to the aesthetic surface of nickel, the element is aesthetically pleasing,
- The surface of neodymium magnets generates a concentrated magnetic field – this is one of their assets,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Possibility of accurate shaping and optimizing to complex needs,
- Key role in modern technologies – they are used in HDD drives, electric drive systems, medical devices, as well as technologically advanced constructions.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Cons
- At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets decrease their power 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
- 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.
- We recommend a housing - magnetic holder, due to difficulties in producing nuts inside the magnet and complex forms.
- Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. It is also worth noting that small elements of these products can be problematic in diagnostics medical when they are in the body.
- Due to neodymium price, their price is higher than average,
Lifting parameters
Magnetic strength at its maximum – what affects it?
- on a plate made of mild steel, effectively closing the magnetic field
- whose transverse dimension equals approx. 10 mm
- with a surface free of scratches
- with direct contact (no paint)
- for force applied at a right angle (in the magnet axis)
- at room temperature
What influences lifting capacity in practice
- Gap between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) diminishes the magnet efficiency, 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 nominal value.
- Element thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Plate material – mild steel gives the best results. Alloy steels lower magnetic properties and lifting capacity.
- Surface finish – full contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Temperature – heating the magnet results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.
Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under perpendicular forces, whereas under shearing force the holding force is lower. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.
Safe handling of NdFeB magnets
Handling rules
Exercise caution. Neodymium magnets act from a distance and connect with massive power, often quicker than you can move away.
Impact on smartphones
GPS units and mobile phones are extremely sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Crushing risk
Watch your fingers. Two powerful magnets will join immediately with a force of several hundred kilograms, crushing everything in their path. Be careful!
Data carriers
Equipment safety: Neodymium magnets can damage payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).
Material brittleness
Despite the nickel coating, neodymium is brittle and not impact-resistant. Do not hit, as the magnet may shatter into hazardous fragments.
Adults only
Only for adults. Tiny parts can be swallowed, leading to severe trauma. Store out of reach of children and animals.
Do not overheat magnets
Watch the temperature. Heating the magnet above 80 degrees Celsius will ruin its properties and pulling force.
Nickel coating and allergies
Certain individuals have a hypersensitivity to Ni, which is the typical protective layer for NdFeB magnets. Prolonged contact can result in skin redness. We strongly advise use protective gloves.
Medical interference
Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.
Combustion hazard
Machining of neodymium magnets carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.
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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