![Separation magnetic rod SM 25x125 [2xM8] / N52](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Separation magnetic rod SM 25x125 [2xM8] / N52")
![SM 25x125 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x125-2xm8-bub.jpg)
SM 25x125 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130367
GTIN/EAN: 5906301813156
Diameter Ø
25 mm [±1 mm]
Height
125 mm [±1 mm]
Weight
460 g
Magnetic Flux
~ 8 500 Gauss [±5%]
393.60 ZŁ with VAT / pcs + price for transport
320.00 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Contact us by phone
+48 888 99 98 98
otherwise send us a note via
inquiry form
the contact page.
Strength and appearance of a magnet can be reviewed on our
modular calculator.
Same-day shipping for orders placed before 14:00.
Product card - SM 25x125 [2xM8] / N52 - magnetic separator
Specification / characteristics - SM 25x125 [2xM8] / N52 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130367 |
| GTIN/EAN | 5906301813156 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 25 mm [±1 mm] |
| Height | 125 mm [±1 mm] |
| Weight | 460 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| Polarity | circumferential - 4 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 25x125 [2xM8] / N52
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 25 | mm |
| Total length | 125 | mm (L) |
| Active length | 89 | mm |
| Section count | 3 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~466 | g |
| Active area | 70 | 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 (3 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% |
Environmental data
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
![SM 32x475 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-32x475-2xm8-jot.jpg "SM 32x475 [2xM8] / N42 - magnetic separator")
Advantages as well as disadvantages of Nd2Fe14B magnets.
Benefits
- They retain magnetic properties for nearly ten years – the drop is just ~1% (in theory),
- They are resistant to demagnetization induced by presence of other magnetic fields,
- In other words, due to the smooth finish of gold, the element gains visual value,
- The surface of neodymium magnets generates a powerful magnetic field – this is a key feature,
- 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...
- Thanks to versatility in forming and the ability to adapt to individual projects,
- Universal use in modern technologies – they serve a role in mass storage devices, electric drive systems, medical devices, and modern systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which enables their usage in compact constructions
Disadvantages
- They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also improves its resistance to damage
- NdFeB magnets demagnetize 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
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in creating threads and complicated shapes in magnets, we recommend using cover - magnetic mount.
- Possible danger related to microscopic parts of magnets pose a threat, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, tiny parts of these devices are able to be problematic in diagnostics medical when they are in the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Pull force analysis
Optimal lifting capacity of a neodymium magnet – what contributes to it?
- using a sheet made of low-carbon steel, serving as a circuit closing element
- whose thickness is min. 10 mm
- characterized by even structure
- without the slightest clearance between the magnet and steel
- under perpendicular force vector (90-degree angle)
- at standard ambient temperature
Determinants of practical lifting force of a magnet
- Space between magnet and steel – every millimeter of distance (caused e.g. by veneer or unevenness) drastically reduces the pulling force, often by half at just 0.5 mm.
- Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
- Metal type – not every steel reacts the same. High carbon content weaken the attraction effect.
- Surface finish – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, whereas under shearing force the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet and the plate reduces the load capacity.
H&S for magnets
Eye protection
Neodymium magnets are ceramic materials, meaning they are fragile like glass. Collision of two magnets leads to them shattering into shards.
Swallowing risk
Only for adults. Small elements pose a choking risk, leading to intestinal necrosis. Store away from children and animals.
Immense force
Use magnets with awareness. Their immense force can surprise even experienced users. Plan your moves and respect their power.
Warning for heart patients
Patients with a pacemaker must maintain an large gap from magnets. The magnetic field can disrupt the functioning of the implant.
Bodily injuries
Pinching hazard: The attraction force is so great that it can result in hematomas, crushing, and broken bones. Use thick gloves.
Mechanical processing
Dust created during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.
Permanent damage
Standard neodymium magnets (grade N) lose power when the temperature exceeds 80°C. Damage is permanent.
Avoid contact if allergic
Allergy Notice: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction occurs, immediately stop working with magnets and use protective gear.
Precision electronics
Navigation devices and mobile phones are highly sensitive to magnetic fields. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Electronic hazard
Powerful magnetic fields can corrupt files on payment cards, hard drives, and storage devices. Maintain a gap of at least 10 cm.
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
Rate the product
Your rating