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SM 25x350 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130355
GTIN/EAN: 5906301813033
Diameter Ø
25 mm [±1 mm]
Height
350 mm [±1 mm]
Weight
1360 g
Magnetic Flux
~ 8 500 Gauss [±5%]
1057.80 ZŁ with VAT / pcs + price for transport
860.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Specifications and shape of a neodymium magnet can be estimated with our
magnetic calculator.
Orders placed before 14:00 will be shipped the same business day.
Technical specification of the product - SM 25x350 [2xM8] / N52 - magnetic separator
Specification / characteristics - SM 25x350 [2xM8] / N52 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130355 |
| GTIN/EAN | 5906301813033 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 350 mm [±1 mm] |
| Weight | 1360 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| Polarity | circumferential - 13 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 25x350 [2xM8] / N52
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 350 | mm (L) |
| Active length | 314 | mm |
| Section count | 13 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~1306 | g |
| Active area | 247 | 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 (13 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% |
Ecology and recycling (GPSR)
| 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.
Benefits
- They have stable power, and over more than ten years their attraction force decreases symbolically – ~1% (according to theory),
- They are resistant to demagnetization induced by presence of other magnetic fields,
- In other words, due to the glossy layer of nickel, the element gains a professional look,
- They show high magnetic induction at the operating surface, which affects their effectiveness,
- 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...
- Considering the option of free forming and adaptation to custom requirements, NdFeB magnets can be manufactured in a broad palette of forms and dimensions, which increases their versatility,
- Huge importance in electronics industry – they are utilized in computer drives, electric motors, advanced medical instruments, as well as complex engineering applications.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Limitations
- At very strong impacts they can crack, 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 lose strength 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 extremely resistant to heat
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in producing threads and complicated forms in magnets, we propose using casing - magnetic mount.
- Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that small elements of these magnets can complicate diagnosis medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Lifting parameters
Highest magnetic holding force – what it depends on?
- on a plate made of structural steel, effectively closing the magnetic field
- whose transverse dimension is min. 10 mm
- characterized by even structure
- with direct contact (without paint)
- for force acting at a right angle (pull-off, not shear)
- at standard ambient temperature
Lifting capacity in practice – influencing factors
- Space between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) significantly weakens the pulling force, often by half at just 0.5 mm.
- Force direction – declared lifting capacity refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
- Plate thickness – too thin sheet does not close the flux, causing part of the power to be wasted into the air.
- Material type – the best choice is high-permeability steel. Stainless steels may attract less.
- Surface condition – smooth surfaces guarantee perfect abutment, which improves force. Rough surfaces reduce efficiency.
- Temperature – heating the magnet causes a temporary drop of force. It is worth remembering the maximum operating temperature for a given model.
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under parallel forces the holding force is lower. In addition, even a small distance between the magnet and the plate decreases the holding force.
Warnings
Hand protection
Protect your hands. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Be careful!
Keep away from children
Absolutely store magnets away from children. Choking hazard is high, and the effects of magnets clamping inside the body are very dangerous.
Threat to navigation
Navigation devices and mobile phones are highly susceptible to magnetism. Close proximity with a powerful NdFeB magnet can ruin the internal compass in your phone.
Data carriers
Equipment safety: Strong magnets can damage payment cards and delicate electronics (pacemakers, hearing aids, mechanical watches).
Operating temperature
Keep cool. Neodymium magnets are sensitive to heat. If you require resistance above 80°C, ask us about special high-temperature series (H, SH, UH).
Life threat
Warning for patients: Powerful magnets affect medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.
Magnets are brittle
Beware of splinters. Magnets can fracture upon violent connection, launching sharp fragments into the air. We recommend safety glasses.
Metal Allergy
Nickel alert: The Ni-Cu-Ni coating consists of nickel. If redness occurs, cease working with magnets and wear gloves.
Safe operation
Handle with care. Neodymium magnets attract from a distance and connect with massive power, often quicker than you can react.
Machining danger
Powder generated during grinding of magnets is combustible. Avoid drilling into magnets unless you are an expert.
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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