![Separation magnetic rod SM 25x175 [2xM8] / N52](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Separation magnetic rod SM 25x175 [2xM8] / N52")
![SM 25x175 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x175-2xm8-gif.jpg)
SM 25x175 [2xM8] / N52 - magnetic separator
magnetic separator
Catalog no 130369
GTIN/EAN: 5906301813170
Diameter Ø
25 mm [±1 mm]
Height
175 mm [±1 mm]
Weight
660 g
Magnetic Flux
~ 8 500 Gauss [±5%]
541.20 ZŁ with VAT / pcs + price for transport
440.00 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Give us a call
+48 888 99 98 98
or contact us by means of
contact form
the contact section.
Lifting power as well as shape of magnets can be calculated on our
force calculator.
Same-day shipping for orders placed before 14:00.
Detailed specification - SM 25x175 [2xM8] / N52 - magnetic separator
Specification / characteristics - SM 25x175 [2xM8] / N52 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130369 |
| GTIN/EAN | 5906301813170 |
| 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 | ~ 8 500 Gauss [±5%] |
| Size/Mount Quantity | M8x2 |
| Polarity | circumferential - 6 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 25x175 [2xM8] / N52
| 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) | 18.1 | kg (theor.) |
| Induction (surface) | ~8 500 | Gauss (Max) |
Chart 2: Field profile (6 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other offers
![SM 32x125 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-32x125-2xm8-pul.jpg "SM 32x125 [2xM8] / N42 - magnetic separator")
Strengths as well as weaknesses of rare earth magnets.
Strengths
- They do not lose strength, even after nearly ten years – the reduction in power is only ~1% (based on measurements),
- Magnets very well protect themselves against loss of magnetization caused by foreign field sources,
- By applying a lustrous layer of gold, the element has an proper look,
- They feature high magnetic induction at the operating surface, which improves attraction properties,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures approaching 230°C and above...
- Thanks to freedom in forming and the ability to adapt to individual projects,
- Universal use in modern industrial fields – they are used in HDD drives, electromotive mechanisms, advanced medical instruments, as well as complex engineering applications.
- Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,
Weaknesses
- To avoid cracks under impact, we recommend using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
- Neodymium magnets lose 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 stability even at temperatures up to 230°C
- When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
- We suggest cover - magnetic holder, due to difficulties in realizing nuts inside the magnet and complex shapes.
- Potential hazard related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Furthermore, small elements of these devices are able to complicate diagnosis medical when they are in the body.
- Due to expensive raw materials, their price exceeds standard values,
Holding force characteristics
Maximum lifting force for a neodymium magnet – what contributes to it?
- on a plate made of structural steel, perfectly concentrating the magnetic flux
- whose thickness reaches at least 10 mm
- characterized by lack of roughness
- under conditions of ideal adhesion (surface-to-surface)
- under perpendicular application of breakaway force (90-degree angle)
- at temperature room level
Practical aspects of lifting capacity – factors
- Clearance – existence of foreign body (paint, dirt, gap) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Steel grade – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
- Surface finish – ideal contact is possible only on smooth steel. Any scratches and bumps create air cushions, reducing force.
- 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 performed on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.
H&S for magnets
Do not overheat magnets
Regular neodymium magnets (N-type) lose power when the temperature surpasses 80°C. Damage is permanent.
Machining danger
Dust generated during machining of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.
Cards and drives
Data protection: Neodymium magnets can damage data carriers and sensitive devices (pacemakers, hearing aids, mechanical watches).
Fragile material
Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. We recommend safety glasses.
Impact on smartphones
An intense magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Do not bring magnets near a device to prevent damaging the sensors.
Skin irritation risks
It is widely known that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, avoid direct skin contact and choose encased magnets.
Bodily injuries
Danger of trauma: The attraction force is so immense that it can result in blood blisters, crushing, and broken bones. Protective gloves are recommended.
Danger to the youngest
These products are not suitable for play. Eating several magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and necessitates urgent medical intervention.
Danger to pacemakers
Individuals with a heart stimulator must keep an absolute distance from magnets. The magnetic field can stop the operation of the life-saving device.
Handling guide
Exercise caution. Neodymium magnets attract from a long distance and snap with huge force, often quicker than you can move away.
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